Consulta: subjectFacets:"Dormancy"
Registros recuperados: 132
Data/hora: 16/06/2024 00:37:30

Superação da dormência de sementes de jatobá
Provedor de dados: 190
Autores: Freitas, Allan Rocha; Lopes, José Carlos; Matheus, Miele Tallon; Mengarda, Liana Hilda Golin; Venancio, Luan Peroni; Caldeira, Marcos Vinicius Winckler.
Devido às dificuldades para obtenção de sementes de boa qualidade fisiológica e de técnicas ideais para a reprodução seminífera, este estudo teve por objetivo avaliar a eficiência da escarificação na superação da dormência de sementes de jatobá (Hymenaea oblongifolia e Hymenaea courbaril var. stilbocarpa). O delineamento experimental utilizado foi o inteiramente casualizado, com quatro repetições de 25 sementes. Os tratamentos adotados foram: sementes intactas (controle); escarificação mecânica com lixa d’água nº 100, do lado oposto ao embrião; e tratamento de escarificação com ácido sulfúrico (H2SO4) concentrado durante 30; 60; 90 e 120 minutos. A escarificação mecânica e escarificação química durante 30 e 60 minutos constituíram-se em tratamentos...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Recursos Florestais Espécie nativa; Vigor; Germinação; Dormência Native species; Vigour; Germination; Dormancy.
Ano: 2013
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/350

Tratamentos pré-germinativos em sementes de palmiteiro
Provedor de dados: 190
Autores: Ribeiro, Maitê dos Santos; Steffens, Cristiano André; Oliveira, Luciana Magda; Garcia, Cristhyane; Pikart, Tiago Georg; Souza, Gabriely Koerich.
Este trabalho objetivou avaliar a eficiência de tratamentos pré-germinativos na promoção da germinação e crescimento inicial de plântulas de palmiteiro. Os tratamentos avaliados foram: controle, imersão em solução de GA3, exposição ao etileno, imersão em água, imersão em H2SO4, escarificação mecânica, estratificação por 30 dias a 10°C, e escarificação seguida de estratificação. A imersão de sementes em solução de ácido giberélico (GA3; 2000 µL L-1 durante 24 h) ou sua exposição ao etileno (1000 µL L-1 durante 24 h) são eficientes para a promoção da emergência e crescimento inicial de plântulas de palmiteiro.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Recursos Florestais; Silvicultura; Tecnologia de Sementes Florestais Euterpe edulis; Dormência; Etileno; Ácido giberélico Euterpe edulis; Dormancy; Ethylene; Gibberellic acid.
Ano: 2015
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/663

Methods for assessment of pre-harvest sprouting in wheat cultivars
Provedor de dados: 86
Autores: Gavazza,Melícia Ingredi Araújo; Bassoi,Manoel Carlos; Carvalho,Tereza Cristina de; Bespalhok Filho,João Carlos; Panobianco,Maristela.
The objective of this work was to test methods for pre-harvest sprouting assessment in wheat cultivars. Fourteen wheat cultivars were grown in Londrina and Ponta Grossa municipalities, Paraná state, Brazil. They were sampled at 10 and 17 days after physiological maturity and evaluated using the methods of germination by rainfall simulation (in a greenhouse), in-ear grain sprouting, and grains removed from the ears. The in-ear grain sprouting method allowed the differentiation of cultivars, but showed different resistance levels from the available description of cultivars. The sprouting of grain removed from the ears did not allow a reliable distinction of data on germination in any harvest date or location. The method of rainfall simulation is the most...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Triticum aestivum; Dormancy; Grain quality; Rainfall simulation.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2012000700008

Analysis of preharvest sprouting in three Brazilian wheat populations
Provedor de dados: 86
Autores: Bassoi,Manoel Carlos; Flintham,John; Riede,Carlos Roberto.
The objective of this work was to evaluate the possibility of obtaining recombinant inbred wheat lines more resistant to preharvest sprouting, independently of colour genes, in three red-grained Brazilian wheat populations. The results showed statistical significance among lines within all populations, which presented a normal distribution and transgressive segregation for preharvest sprouting. The normal distribution of the lines from all red-grained populations suggests that sprouting, excluding the genes expressing seed coat pigmentation, is, probably, controlled by many genes. These findings also indicate that it may be possible to improve resistance to preharvest sprouting, independently of the colour genes.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Triticum aestivum; Dormancy; Grain colour; Genes; Genetic variation.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2006000400006

Relationship between grain colour and preharvest sprouting-resistance in wheat
Provedor de dados: 86
Autores: Bassoi,Manoel Carlos; Flintham,John.
Since red alleles (R) of the genes that control grain colour are important for the improvement of preharvest sprouting resistance in wheat and there are three independently inherited loci, on chromosomes 3A, 3B and 3D of hexaploid wheat, it is possible to vary the dosage of dominant alleles in a breeding program. The objective of this work was to evaluate the dosage effect of R genes on preharvest sprouting, in a single seed descent population, named TRL, derived from the cross between Timgalen, white-grained wheat, and RL 4137, red-grained wheat. The study was carried out using sprouting data in ripe ears obtained under artificial conditions in a rainfall simulator over three years. According to the results there is a significant effect on preharvest...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Triticum aestivum; Gene; Allele; Dormancy; Dosage effect.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2005001000006

Longevity of Horseweed Seed Bank Depending on the Burial Depth
Provedor de dados: 87
Autores: VARGAS,A.A.M.; AGOSTINETTO,D.; ZANDONÁ,R.R.; FRAGA,D.S.; AVILA NETO,R.C.
ABSTRACT: Horseweed (Conyza spp.) is considered as one of the major weeds occurring in the agricultural areas of South America, especially in Brazil. This species stands out from the other weeds due to characteristics such as large seed production, continued seed production, dispersion over long distances and resistance to 5-enolpyruvoylshikimate 3-phosphate (EPSP) and acetolactate synthase (ALS) inhibiting herbicides, features that increase their management. Therefore, this study aimed at determining the physiological quality and longevity of horseweed seeds over 12 months. The experiment was established under field conditions, using a randomized block design with four replications. Fifty horseweed seeds were distributed into 50 g of dry soil, placed in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Conyza spp.; Survival; Dormancy; Germination; Viability.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100249

Dormancy studies on Euphorbia dracunculoides and Astragalus spp.: major weeds of arid areas
Provedor de dados: 87
Autores: Ikram,R.M.; Tanveer,A.; Ata,Z.; Saqib,M.
The aim of this study was to examine the dormancy behavior of Euphorbia dracunculoides and Astragalus spp., weeds of arid chickpea. The dormancy breaking treatments were: Gibberalic acid (GA3) and Thiourea each at 50, 100, 150, 200, 250, and 300 ppm and Potassium nitrate (KNO3) at 5,000, 10,000, 15,000, 20,000, 25,000, and 30,000 ppm (24 h soaking). Germination (G) percentage and germination energy (GE) of E. dracunculoides was maximum (89 and 22, respectively) at 250 ppm concentration of GA3 and 81.50 and 11.50 at 15000 ppm concentration of KNO3. Thiourea at 250 and 300 ppm resulted in maximum G percentage (51) and GE (25.50) of E. dracunculoides, whereas the G percentage and GE of Astragalus spp. were maximum (28 and 19, respectively) at the lowest...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: GA3; KNO3; Thiourea; Dormancy; E. dracunculoides; Astragalus spp.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582014000400009

Effect of plant density and seed position on mother plant on physiological characteristic of cocklebur (Xanthium strumarium) seeds
Provedor de dados: 87
Autores: Foroughi,A.; Gherekhloo,J.; Ghaderi-Far,F.
Experiments were conducted in 2010 to determine the influence of plant density and seed position on the mother plant on seed physiological characteristics of cocklebur (Xanthium strumarium). Cocklebur burs were collected in fall of 2010 from Research Farm of University of Agricultural Sciences and Natural Resources of Gorgan, Iran. The experiment was established as factorial arrangement using a completely randomized design with three replications. The factors included different densities of cocklebur (0, 2, 4, 6 and 8 plant m-2) and the top and bottom parts of the canopy. Non dormant seeds were used for determining cardinal temperatures and tolerance to salinity and drought stresses. Base, optimum and ceiling germination temperatures were estimated between...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Shade environment; Cardinal temperature; Competition; Dormancy.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582014000100007

Effect of environmental factors on the germination of Megathyrsus maximus: an invasive weed in sugarcane in Argentina
Provedor de dados: 87
Autores: C. Cabrera,Debora; Sobrero,María T.; Pece,Marta; Chaila,Salvador.
Abstract  Background: Megathyrsus maximus (Jacq.) is a perennial weed that affects many crops. In Argentina, sugarcane is the most affected.  Objective:  Study effective techniques to break dormancy and the effect of environmental factors on the germination of this weed.  Methods: Experiments were carried out in cabinet incubators twice, with five replicates per treatment. The experimental unit was made up for 50 seeds.  Results: Seed dormancy was strongly associated with the presence of glumes. Manual extractions of glumes and immersion in sulphuric acid were the most effective techniques for breaking dormancy. Megathyrsus maximus did not depend on light to germinate, and it did so both under a 12 h-light-dark photoperiod and in complete darkness, with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Megathyrsus maximus; Guinea grass; Scarification; Salt stress; Temperature; Osmotic stress; Dormancy.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582020000100304

Germination and Dormancy in Seeds of Sorghum halepense and Sorghum arundinaceum
Provedor de dados: 87
Autores: Krenchinski,F.H.; Albrecht,A.J.P.; Albrecht,L.P.; Villetti,H.L.; Orso,G.; Barroso,A.A.M.; Victoria Filho,R.
Light, temperature and dormancy are factors that influence the germination of seeds and are strictly linked to the emergence of weeds. The objective of this work was to assess the germination of Sorghum arundinaceum and Sorghum halepense subjected to different conditions of temperature and luminosity, as well as assessing seed dormancy breaking mechanisms. For this, two experiments were conducted, both arranged in a completely randomized design. Experiment 1 was installed in a 2 x 5 double factorial design. The first factor was the absence or presence of light for 12 hours, and the other was composed of five constant temperatures: 15, 20, 30, 40 and 45 oC. In experiment 2, the efficiency of nine treatments used for breaking dormancy of seeds was assessed....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Johnsongrass; False johnsongrass; Dormancy; Seeds.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582015000200223

The seed coat as a modulator of seed-environment relationships in Fabaceae
Provedor de dados: 88
Autores: SOUZA,FRANCISCO H. DÜBBERN DE; MARCOS-FILHO,JÚLIO.
The seed coat is one of the main determinants of seed germination, vigor and longevity potentials. It is also intimately associated with temporal and spatial dispersion of seed germination in a large number of plant species. The understanding of its properties and characteristics may explain, anticipate or even allow the modification of seed performance under certain environmental conditions. There is a growing volume of evidence associating seed coat characteristics to specific seed problems. For example, susceptibility to mechanical damage is related to lignin content of the seed coat, while seed longevity and tolerance to field weathering depends on seed coat integrity. Seed performance in many legumes has been associated with certain seed coat...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Germination; Vigor; Imbibition; Dormancy.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042001000400002

Multiple dormancy and maternal effect on Miconia ferruginata (Melastomataceae) seed germination, Serra de Caldas Novas, Goiás, Brazil
Provedor de dados: 88
Autores: Mendes-Rodrigues,Clesnan; Araújo,Francielle Paulina de; Barbosa-Souza,Cláudia; Barbosa-Souza,Valéria; Ranal,Marli A.; Santana,Denise Garcia de; Oliveira,Paulo Eugênio.
Species with mostly asexual reproduction are interesting subjects for germination studies since variation would be more easily linked to environmental factors. Miconia ferruginata DC. is an apomictic treelet in Brazilian cerrado areas on rocky outcrops. Germination of seeds collected from individuals occurring in the Serra de Caldas Novas State Park, Goiás, was studied in three experiments under controlled conditions. Germination characteristics differed among individuals and were correlated with altitude and soil Al content. Seeds from plants growing at lower altitudes, with lower soil aluminium content, presented malformed seeds with absence of embryo which rendered lower, but better synchronized germination. The nested analysis showed that from the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Altitudinal gradient; Campo rupestre; Cerrado; Dormancy; Tropical savanna.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042010000100009

Biometria de frutos e sementes e germinação de jatobá-curuba (Hymenaea intermedia Ducke, Leguminosae - Caesalpinioideae)
Provedor de dados: 88
Autores: CRUZ,ENIEL DAVID; MARTINS,FÁDUA DE OLIVEIRA; CARVALHO,JOSÉ EDMAR URANO DE.
Hymenaea intermedia Ducke é uma Leguminosae-Caesalpinioideae de grande porte, encontrada em áreas de floresta nos Estados do Pará e Amazonas. O trabalho objetivou estudar as características biométricas de frutos e sementes de H. intermedia e o efeito da escarificação na germinação das sementes. Determinou-se o comprimento, a largura e a espessura de frutos e sementes, o número de sementes por fruto, a porcentagem e o tempo médio de germinação e a porcentagem de plântulas anormais e de sementes mortas, em sementes escarificadas e testemunha. A escarificação foi realizada com esmeril elétrico, na parte basal da semente. A semeadura foi efetuada em substrato de areia e serragem (1:1), em quatro repetições de 50 sementes, em delineamento inteiramente...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mean germination time; Dormancy; Scarification; Hymenaea.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042001000200005

Origin and temperature on the germination of beggartick seeds
Provedor de dados: 91
Autores: Barros,Renato T. de; Martins,Cibele C.; Silva,Givanildo Z. da; Martins,Dagoberto.
ABSTRACT The invasive behavior of beggarticks (Bidens pilosa L.) in cropped areas is due to its ecological adaptation and aggressive regeneration, which is dependent on seed germination. The objective of this research was to verify the effects of B. pilosa seed origin and temperature on seed germination. The seeds were collected in Entre Rios do Oeste, PR, Botucatu, SP, Capão Bonito, SP, São Joaquim da Barra, SP, Sertãozinho, SP, Selvíria, MS, Barra do Garças, MT, Areia, PB and Manaus, AM. The seeds were evaluated regarding moisture content, 1000-seed weight, germination speed index and germination at 60 days (normal seedlings, dormant seeds and dead seeds) at the temperatures of 10, 15, 20, 25, 30, 35, 40, and 45 ºC. The replicates were distributed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bidens pilosa; Weed; Production sites; Dormancy.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017000700448

Performance of ‘Maxi Gala’ apple trees as affected by budbreak promoters, in São Joaquim-SC
Provedor de dados: 94
Autores: Pasa,Mateus da Silveira; Felippeto,João; Nava,Gilberto; Souza,André Luiz Kulkamp de; Brighenti,Alberto Fontanella; Petri,José Luiz.
Abstract  The application of rest breaking agents to compensate the lack of chilling is a common practice in apple orchards in Southern Brazil. However, its necessity in areas of greater chilling accumulation has been questioned over the years. The aim of this study was to investigate the performance of ‘Maxi Gala’ apple in response to different budbreak promoters in São Joaquim, SC. The study was performed in the growing seasons of 2013/2014, 2014/2015, and 2015/2016. Plant material consisted of 10-year-old ‘Maxi Gala’ apple trees grafted on the rootstock ‘M.9’, arranged in a randomized complete block design with five replicates in the 2013/2014 and 2014/2015 growing seasons and six replicates in the 2015/2016 season. Treatments consisted of Erger®,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Malus domestica; Dormancy; Flowering; Hydrogen cyanamide.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452018000500701

INFLUENCE OF DIFFERENT TEMPERATURE LEVELS ON THE DATE OF FULL BLOOM OF PEACH VARIETIES IN SUBTROPICAL CLIMATE
Provedor de dados: 94
Autores: POLA,AUGUSTO CARLOS; BRUNA,EMILIO DELLA; BACK,ÁLVARO JOSÉ; MORETO,ALEXSANDER LUÍS.
ABSTRACT  The dormancy dynamics of temperate fruit tree species is complex and highly variable according to genotype and environment. Due to this variability, many phenological models of cold units have not been suitable for subtropical climatic conditions in southern Brazil. The aim of this study was to evaluate the influence of air temperature on the peach dormancy in Urussanga-SC. For this purpose, the correlations between the date of full bloom of sixteen peach varieties and the total hours in which the temperatures remain in certain thermal levels were evaluated. Two groups of varieties with highly differentiated responses to temperature in various times were identified. In the first group, consisting of ten varieties, the beginning of significant...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Prunus persica; Dormancy; Temperature; Statistical method.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452016000400802

Water absorption and physiological responses of hog plum tree diaspores to storage
Provedor de dados: 94
Autores: Carvalho,José Edmar Urano de; Nascimento,Walnice Maria Oliveira do.
Abstract  Hog plum tree seeds (Spondias mombin L.) have a complex dormancy mechanism, which causes slow germination and great unevenness. At present, there are no efficient methods to promote seed germination. The objective of the study was to evaluate the effect of storage on overcoming seed dormancy of this Anacardiaceae. Diaspores of two hog plum trees were used, identified as Mother plant 1 and Mother plant 2, established in Tomé-Açu city, PA. Initially, it was investigated whether the structures surrounding the seeds (internal mesocarp and endocarp) prevent water absorption. For this, the diaspores of the two mother plants were sown between blotting paper, with an adequate level of water and, periodically, in the total of 144 hours, the water content...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Spondias mombin L.; Germination; Dormancy.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452020000302001

Performance of ‘Fuji Suprema’ apple trees treated with budbreak promoters, in São Joaquim-SC
Provedor de dados: 94
Autores: Pasa,Mateus da Silveira; Felippeto,João; Nava,Gilberto; Silva,Carina Pereira da; Brighenti,Alberto Fontanella; Ciotta,Marlise Nara.
Abstract  The application of rest breaking agents to overcome the lack of chilling is a common practice in apple orchards in southern Brazil. However, its necessity in areas of greater chilling accumulation, like in the city São Joaquim, Santa Catarina State (SC), has been questioned over the years. The aim of this study was to evaluate the effect of different budbreak promoters, on the performance of ‘Fuji Suprema’ apple trees, in the region of São Joaquim/SC. The study was performed at the Experimental Station of São Joaquim - Santa Catarina Agricultural Research and Extension Agency (EPAGRI), in the growing seasons of 2013/2014, 2014/2015, and 2015/2016. Plant material consisted of 10-year-old ‘Fuji Suprema apple trees grafted on the rootstock ‘M.9’ and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Malus domestica; Dormancy; Flowering; Yield; Hydrogen cyanamide; Nitrogen-calcium solution.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452018000100701

Conditioning in the promotion and uniformization of Umbu seed germination
Provedor de dados: 94
Autores: Barros,Renato Teo; Martins,Cibele Chalita; Pereira,Francisco Elder Carlos Bezerra; Silva,Givanildo Zildo da.
Abstract  Seed dormancy may decrease during storage and some environmental conditions may accelerate this process. The aim of this work was to determine efficient techniques to condition umbu seeds in order to promote and standardize their germination. Seeds were stored for 180 days in paper bags kept in five ambient conditions: laboratory (25 ºC and 55% RH); warm oven (40 °C and 53% RH); hot oven (50 °C and 49% RH); dry chamber (18 °C and 65% RH) and cold chamber (10 °C and 65% RH). Seed quality was evaluated every 60 days by means of the following tests and determinations: water content; germination test (25 °C and 55% RH, weekly evaluated up to 91 days after sowing); first count test (14 days); germination rate index; mean germination time and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Storage; Dormancy; Germination; Fruit trees; Spondias tuberosa.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452018000102001

Evaluation of winter temperatures on apple budbreak using grafted twigs
Provedor de dados: 94
Autores: Hawerroth,Fernando José; Herter,Flavio Gilberto; Petri,José Luiz; Marafon,Anderson Carlos; Leonetti,Jeison Furtado.
Temperature is the main climate factor related to induction, maintenance and dormancy release in apple (Malus domestica Borkh.). The inadequate chilling exposure in apples causes budbreak problems, resulting in decrease in yield potential. Thus, the knowledge of physiological principles and environmental factors determining the dormancy phenomenon, especially winter temperature effects, it is necessary for the efficient selection of cultivars in a productive region. In addition, it is indispensable to adapt the orchard management aiming to decrease the problems caused by lack chilling during winter. The objective of this study was to evaluate the influence of different thermal conditions during the dormancy period on budbreak of apple cultivars....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Malus domestica; Dormancy; Chilling requirement; Grafted twigs; Apical dominance.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452013000300007

PRE-GERMINATIVE TREATMENTS IN POMEGRANATE SEEDS (Punica granatum L.):EFFECT ON PHYSIOLOGICAL QUALITY
Provedor de dados: 94
Autores: SILVA,JOSEANO GRACILIANO DA; LOPES,KILSON PINHEIRO; CAVALCANTE,JERFFESON ARAÚJO; PEREIRA,NATALI ALMEIDA EVANGELISTA; BARBOSA,ROBERTA CHAIENE ALMEIDA.
ABSTRACT  This study aimed to evaluate the efficiency of different removal methods of sarcotesta and their effects on the physiological quality of the seeds. We applied the following treatments: T1 - friction in coarse sand on a sieve; T2 and T3 - immersion in sulfuric acid (98%) for 30 minutes and washing in water, with and without a vernalization for 48 hours in a refrigerator at 4 °C, respectively; T4 and T5 - natural fermentation for 72 hours, with seeds submitted and not submitted to drying in shade for seven days; and T6 - seeds with intact sarcotesta as control. The experiment was carried out in a completely randomized design. For the analysis of the viability and vigor, we used the germination test, germination on first count, germination speed...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Pomegranate Tree; Sarcotesta; Dormancy; Physiology.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452017000702001

Lolium Multiflorum seeds in the soil: II. Longevity under natural conditions
Provedor de dados: 95
Autores: Maia,Fernanda Costa; Maia,Manoel De Souza; Bekker,Renée M.; Berton,Rogério Previatti; Caetano,Leandro Sebastião.
The interest was the seed longevity dynamics of annual ryegrass in natural conditions as an important tool to explain its dynamics in no tillage systems used in the South of Brazil. The species is commonly managed for natural re-sowing and, in this way, allows cattle grazing with reduced costs during the winter time. In February of 2003, twenty bags of nylon screen containing sterilised soil with 100 seeds in each were randomly buried in the field, 5 cm deep. Around every three or four months, four sacks were exhumed. Seeds were counted and tested using germination and tetrazolium tests.The seeds showed high primary dormancy, which was overcome very fast. After 108, 226, 326, 565 and 732 days of burial there were no significant differences as the secondary...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Annual ryegrass; Persistence; Viability; Dormancy; Buried seeds.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-31222009000200014

Action of gibberellic acid (GA3) on dormancy and activity of alpha-amylase in rice seeds
Provedor de dados: 95
Autores: Vieira,Antônio Rodrigues; Vieira,Maria das Graças Guimarães Carvalho; Fraga,Antônio C.; Oliveira,João Almir; Santos,Custódio D. dos.
To evaluate the effectiveness of gibberellic acid (GA3) in breaking rice seed dormancy and the use of alpha-amylase enzyme activity as an indicator of the dormancy level, seed from the intensively dormant irrigated cultivar Urucuia were used. The seeds were submitted to a pre-drying process in a forced air circulation chamber under 40ºC during 7 days and submersed in 30 mL of GA3 solution under 0, 10, 30 and 60 mg/L H2O concentrations, during 2, 24 and 36 hours. After the treatments, the alpha-amylase activity was determined by using the polyacrilamide electrophoresis and spectrophotometry. At the same time, the germination test was made. The results indicated a gain in germination and in alpha-amylase activity in higher concentrations and soaking time of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rice seeds; Dormancy; Germination; Gibberellic acid (GA3); Alpha-amylase.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-31222002000200008

Viability of barley seeds by the tetrazolium test
Provedor de dados: 95
Autores: Grzybowski,Camila Ribeiro de Souza; Ohlson,Osvaldo de Castro; Silva,Rosemeire Carvalho da; Panobianco,Maristela.
The tetrazolium test is used to control seed quality of various plant species since it allows a rapid evaluation of viability. Freshly harvested barley seeds show dormancy that can make the germination test ineffective for an immediate evaluation. Therefore, the development of more efficient methods, such as the tetrazolium test, is necessary. The objective of this research work was to study various procedures for performing the tetrazolium test on barley seeds. Five lots of cv. BRS 195 barley seeds were used and subjected to the following treatments: two different methods of seed preconditioning (direct immersion in H2O and between sheets of moistened paper towels); two types of preparation for staining (longitudinal cross-section of the seed through the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hordeum vulgare; Germination; Dormancy.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-31222012000100006

Effects of temperature and pre-germinative treatments on seed germination of Talinum triangulare (Jacq. ) willd (Portulacaceae)
Provedor de dados: 95
Autores: Brasileiro,Beatriz Gonçalves; Dias,Denise Cunha F. S.; Casali,Vicente Wagner Dias; Bhering,Maria Carmen; Cecon,Paulo Roberto.
The objective of this study was to evaluate the effects of temperature, substrate and pre-germinative treatments on T. triangulare seeds. Four temperatures (constant 20, 25, 30 °C and alternate 20-30 °C) and two types of seeding (on paper and between paper), with light, were evaluated. The pre-germinative treatments evaluated included: immersion in water (24 hours), immersion in 6% hypochlorite solution (1 hour), immersion in 0.2% potassium nitrate solution (24 hours), immersion in 0.05% gibberellin solution (24 hours) and the control (untreated seeds). The highest germination percentage was observed at the alternate temperatures of 20-30 ºC, but with no significant difference between the substrates at this temperature. Soaking seeds in KNO3 gave the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Substrate; Germination; Dormancy; Medicinal plant.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-31222010000400017

Population dynamics of Megalobulimus paranaguensis (Gastropoda: Pulmonata) in the southeast coast of Brazil
Provedor de dados: 103
Autores: Miranda,Marcel S.; Fontenelle,José H.
ABSTRACT. The population dynamics of Megalobulimus paranaguensis (Pilsbry &amp; Ihering, 1900), a large and long-lived land gastropod from Brazil's Southeast (Atlantic Forest) was studied between 2006 and 2009, at an urban park in the city of Santos, state of São Paulo. The study included biometry, weighing, and marking and recapture of adult individuals. The variables obtained from specimens were correlated with the environmental variables of the study period. The survival rate of the adult snail population was 96.7%. Recruitment showed several peaks during the year, and was concentrated between April and August, except in 2009, when there was only one peak in August. Specimen abundance progressively increased from 2006 on, with a trend towards relative...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Activity; Abundance; Dormancy; Land snail.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702015000600463

Time of harvest and storability of Crotalaria juncea L. seeds
Provedor de dados: 124
Autores: Araújo,Alisson Vinicius de; Araújo,Eduardo Fontes; Amaro,Hugo Tiago Ribeiro; Santos,Ricardo Henrique Silva; Cecon,Paulo Roberto.
ABSTRACT  Although used as green manure, one of the challenges the cultivation of Crotalaria juncea is the low availability of quality seeds in the market. The harvest at the right time contributes to the achievement of better quality seeds. The objectives of this study were to evaluate the storability and characterize the physical and physiological changes of the seeds harvested at different times. The statistical design was completely randomized with three replications. Treatments consisted of four harvest seasons and two storage periods (0 to 8 months). The samples were collected when the plants reached 40, 60, 80 and 100% of dried pods. The following characteristics were evaluated: time for drying, moisture content, dry matter accumulation, physical...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Green manure; Storage; Dormancy; Physiological maturity.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902018000100103

Methods to promote Borreria latifolia seed germination
Provedor de dados: 124
Autores: Gallon,Mateus; Trezzi,Michelangelo Muzell; Diesel,Francielli; Possenti,Jean Carlo; Batistel,Sorhaila Camila.
ABSTRACT Specific knowledge on dormancy and germination patterns of weed species aids the development of integrated management strategies. This study aimed to evaluate and select effective methods for overcoming dormancy in B. latifolia seeds, as well as determining their influence on the germination process. A completely randomized experimental design was used, with four replications and 20 seeds per repetition. Seven tests were conducted, with the corresponding B. latifolia seed treatments: Test 1 - mechanical scarification, sulfuric acid, hot water and running water; Test 2 - pre-cooling at 4 °C and dry heat at 60 °C. Test 3 - gibberellic acid at concentrations of 0, 50, 100, 200 and 400 ppm; Test 4 - acetic acid and potassium nitrate 2%; Test 5 - dual...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broadleaf buttonweed; Overcoming; Dormancy; Soaking; Rubiaceae.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902018000300475

Effects of continuous drought and immersion on hatchability of Ochlerotatus albifasciatus (Diptera: Culicidae) eggs stored at low temperature
Provedor de dados: 99
Autores: Campos,Raúl E; Sy,Victoria E.; Castro,Luis.
The role of environmental factors on the hatching response of O. albifasciatus (Macquart) eggs is studied by simulating winter conditions in the laboratory. The hypothesis tested was that hatching response is affected by: (1) time that eggs remain at low temperature, (2) storage conditions, and (3) acclimatization time. Eggs were stored at 5ºC in drought and immersion conditions during 7, 21, 35, 90 and 146 days, immediately after, they were acclimatized at 22ºC during 24, 72, and 168 hours, and then eggs were flooded to induce hatching. Percent of hatched eggs was analyzed with a Generalized Lineal Model with a binomial distribution. Results show that: (1) a long storage period at cold temperature and long acclimatization periods improve the hatching...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Floodwater mosquito; Diapause; Dormancy; Egg; Hatching factors.
Ano: 2007
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0373-56802007000100006

Preventing thermoinhibition in a thermosensitive lettuce genotype by seed imbibition at low temperature
Provedor de dados: 63
Autores: Nascimento,Warley Marcos.
Lettuce (Lactuca sativa L.) seed germination is strongly temperature dependent and under high temperatures, germination of most of genotypes can be erratic or completely inhibited. Lettuce seeds of 'Dark Green Boston' (DGB) were incubated at temperatures ranging from 15° to 35°C at light and dark conditions. Other seeds were imbibed in dark at 20°; 25°; 30°; and 35°C for 8 and 16 hours and then transferred to 20 or 35°C, in dark. Seeds were also incubated at constant temperature of 20° and 35 °C, in the dark, as control. In another treatment, seeds were primed for 3 days at 15°C with constant light. DGB lettuce seeds required light to germinate adequately at temperatures above 25°C. Seeds incubated at 20°C had 97% germination, whereas seeds incubated at...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Germination; Dormancy; Seed priming; Stand establishment.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000300010

Ethylene and lettuce seed germination
Provedor de dados: 63
Autores: Nascimento,Warley Marcos.
Ethylene can stimulate seed germination and overcome dormancy in many species. For instance, the inhibitory effect of high temperature on lettuce seed germination can be overcome by exogenous ethylene. Involvement of ethylene in seed germination is a widely accepted fact, but the mechanistic details are poorly understood. A critical factor in ethylene studies is the response of seed germination properties to various ethylene inhibitors. Lettuce seed has been used as a model to study the role of ethylene in seed germination at high temperature. The role of ethylene in germination is not known but either ethylene evolution or addition of 1-aminocyclopropane-1-carboxilic acid (ACC) have been associated with increased activity of endo-beta-mannanase, a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lactuca sativa; Thermoinhibition; Dormancy; Enzyme activity.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000300029

Genetic and molecular characterization of bud dormancy in apple: deciphering candidate gene roles in dormancy regulation.
Provedor de dados: 119
Autores: FALAVIGNA, V. da S.; GUITTON, B.; AHIER, C.; FARRERA, I.; KELNER, J. J.; SORIANO, A.; PEREIRA, C. S.; ARENHART, R. A.; SARTOR, T.; BUFFON, V.; PASQUALI, G.; REVERS, L. F.; COSTES, E.; ANDRÉS, F.
Dormancy is an adaptive mechanism that enables plants to survive unfavorable climatic conditions, for example during winter, and allows flowering to occur only when the conditions are more permissive, typically in spring.
Tipo: Parte de livro
Palavras-chave: Malus domestica Borkh; Dormancy-Associated MADS-box (DAM) genes; MADS-box; Apple.; Malus Domestica.; Dormancy; Temperature.
Ano: 2017
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1084274

Métodos de superação da dormência de sementes de arroz-bravo (Oryza sp).
Provedor de dados: 119
Autores: SOUZA FILHO, A. P. da S.; CAMARÃO, A. P.
O objetivo da pesquisa foi estudar os efeitos do H2SO 4 (Imersão por 5, 10, 15 e 20 minutos) e do KN03 (imersão por 5, 10 e 20 minutos em solução de 1, 3 e 5%) na superação da dormência das sementes de arroz-bravo. O H2SO 4 promoveu acréscimos de apenas 16,36% na germinação, indicando que sua recomendação não se justifica sob o ponto de vista agronômico ou econômico. O KN03 propiciou acréscimos na germinação em intensidades que variaram de 48,15% a 76,54%, sendo a imersão das sementes por 10 minutos no KN03 a 5%, o tratamento que promoveu o melhor resultado.
Tipo: Parte de livro
Palavras-chave: Forrageira; Seed; Grasse; Sulphuric acid; Ácido Sulfúrico; Arroz; Dormência; Germinação; Gramínea; Nitrato de Potássio; Semente; Dormancy; Forage; Germination; Potassium nitrate; Rice.
Ano: 1998
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/394914

Curva de maturação das sementes de Paspalum guenoarum Arech.
Provedor de dados: 119
Autores: BATISTA, L. A. R.; GODOY, R.
Com o objetivo de determinar a curva de maturação das sementes de Paspalum Arech, acesso BRA-003824, foram marcadas inflorescência em antese, que foram coletadas de cinco plantas.
Tipo: Separatas
Palavras-chave: Florescimento; Grass; Maturation.; Dormência; Forragem; Germinação; Germoplasma.; Flowering; Dormancy; Germination; Germplasm.
Ano: 1997
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/43873

Evolução de brotação em cultivares de macieiras com variações de exigência de frio tratadas com cianamida hidrogenada ao longo do período de endodormência.
Provedor de dados: 119
Autores: PERUZZO, S.; SANTOS, H. P. dos; FIALHO, F. B.; SOUZA, D. A.
O estudo pretendeu responder as seguintes questões: 1) De modo empírico, sabe-se que as plantas precisam de um certo acúmulo de horas de frio (HF) para que o tratamento com cianamida hidrogenada (CH) seja eficaz, porém qual o somatório de frio mínimo para que esse produto tenha efeito pleno? 2) Existe diferença nesta quantidade de HF acumulada para que a CH tenha efeito quando utiliza-se genótipos contrastes de exigência de frio?
Tipo: Separatas
Palavras-chave: Horas de frio; Endodormência; Cianamida hidrogenada; Macieira; Anais; CNPUV.; IC; Iniciação cientifica; Fruticultura; Maçã; Dormência; Frio; Clima; Apples; Fruit growing; Dormancy; Cold.
Ano: 2014
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1001134

Germinação de sementes de pau-de-balsa (Ochroma pyramidale (Cav.) Urb.) - Bombacaceae.
Provedor de dados: 119
Autores: NETTO, D. A. M.
O teste de germinação de sementes de Ochrma pyramidale (Cav.) Urb. foirealizado a temperaturas 20°, 25°, 30°, 20°_ 30° e 25°_ 35°C e substratos papel de filtro, areia, venniculita e rolo de papel com seis repetições de 50 sementes. Para a superação de dormência das sementes utilizou-se escarificação mecânica, embebição em água oxigenada e água fervente. Recomenda-se a germinação de sementes de pau-de-balsa em papel de filtro a temperatura de 30°C após imersão em água fervente por 4 minutos.
Tipo: Artigo de periódico
Palavras-chave: Ochrma pyramidale; Seed.; Semente.; Seeds; Dormancy; Germination.
Ano: 1994
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/478295

Secagem na viabilidade e desenvolvimento embrionário de sementes de Ilex paraguariensis.
Provedor de dados: 119
Autores: MIRESKI, M. C.; GUEDES, R. S.; WENDLING, I.; PEÑA PEÑA, M. L.; MEDEIROS, A. C. de S.
A germinação de erva-mate tem sido apontada como baixa, irregular e lenta, com diferentes graus de dormência, tornando a produção de mudas um grande desafio. Estudos destinados a esclarecer os principais mecanismos de dormência presentes em sementes de erva-mate são de grande importância, porém, escassos. Diante disso, objetivou-se avaliar os efeitos da secagem na viabilidade e no desenvolvimento embrionário de sementes da espécie. A avaliação do efeito da secagem foi realizada mediante determinação do teor de água, teste de tetrazólio e desenvolvimento embrionário. Para avaliar a tolerância à dessecação, as sementes foram acondicionadas em uma bandeja plástica sem tampa, colocada em prateleira de câmara fria e seca (CFS), regulada com 25 ± 3% de umidade...
Tipo: Artigo de periódico
Palavras-chave: Erva mate; Dessecação; Ilex Paraguariensis; Espécie Nativa; Semente; Dormência; Yerba mate; Dormancy; Desiccation (plant physiology).
Ano: 2019
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1115755

Comparação de tratamentos para superar a dormência de sementes de bracatinga (Mimosa scabrella Bentham).
Provedor de dados: 119
Autores: BIANCHETTI, A.
No Laboratório de Análise para Sementes da Unidade Regional de Pesquisa Florestal Centro-Sul - URPFCS/EMBRAPA, foi conduzido um experimento com o objetivo de testar métodos para quebra de dormência de sementes de bracatinga. As sementes foram coletadas de dez árvores matrizes na mata nativa da URPFCS, localizada em Colombo, PR, latitude 25°20'S, longitude 49°14'W e altitude de 920 m. Foram comparados os seguintes tratamentos: a) Imersão em água quente, variandose a temperatura da água (70, 80, 90 e 95°C), deixando-se esfriar por 18 horas; b) imersão em ácido sulfúrico concentrado por um, dois, três e quatro minutos; c) imersão em água (temperatura ambiente), por 35 horas e d) testemunha (sem tratamento). O teste de germinação foi realizado em germinador à...
Tipo: Artigo de periódico
Palavras-chave: Seed.; Bracatinga; Dormência; Germinação; Mimosa Scabrella; Semente.; Germination.; Dormancy.
Ano: 1981
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/282101

Métodos para superar a dormência de sementes de morototo (Schefflera morototoni (Aubl.) Decne. &amp; Planch.).
Provedor de dados: 119
Autores: PANTOJA, K. de F. R.; OHASHI, S. T.; LEÃO, N. V. M.
Tipo: Parte de livro
Palavras-chave: Dormência de semente; Germinação da semente; Schefflera morototoni; Essência Florestal; Morototó; Dormancy; Forest trees; Germination; Seeds.
Ano: 1999
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/395125

Sensibilidade de sementes de jenipapo (Genipa americana L.) ao dessecamento e ao congelamento.
Provedor de dados: 119
Autores: CARVALHO, J. E. U. de; NASCIMENTO, W. M. O. do.
Tipo: Artigo de periódico
Palavras-chave: Dormencia de semente; Belém; Pará; Brasil.; Germinação; Genipa Americana; Jenipapo.; Amazonia; Germination; Dormancy; Seeds.
Ano: 2000
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/400494

The control of bud break and flowering time in plants: contribution of epigenetic mechanisms and consequences in agriculture and breeding.
Provedor de dados: 119
Autores: CATTANI, A. M.; SARTOR, T.; FALAVIGNA, V. da S.; PORTO, D. D.; SILVEIRA, C. P.; OLIVEIRA, P. R. D. de; REVERS, L. F.
In perennial plants, the release of bud dormancy, with subsequentflowering, resemblesthe vernalization process ofArabidopsis thalianaand cereals. Especially for perennialcrops from temperate regions, dormancy is an important adaptive trait for both survivaland growth. Exposure to sufficient chilling during winter dormancy ensures the normalphenological traits in subsequent growing periods. Here, we compile research data onmechanisms controlling the overlapping developmental processes that definedormancy induction, maintenance and release, bud burst andflowering. Recentfind-ings highlight the relevance of genome-wide epigenetic modifications related todormancy events, and more specifically the epigenetic regulation ofDORMANCY-ASSO-CIATED MADS-box,FLOWERING...
Tipo: Parte de livro
Palavras-chave: Dormancy; Flowering; Epigenetics; Chromatin.
Ano: 2019
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1109792

Pre-germination techniques for ?faveira? in lots of different provenances as subsidy to standardization and commercialization.
Provedor de dados: 119
Autores: CORRÊA, A. J. M.; PIÑA-RODRIGUES, F. C. M.; NOGUEIRA, L. A. da S.; SILVA, A. P. M. da; BEHLING, M.; ISERNHAGEN, I.
Abstract: The native seed market in Brazil is recent, requires organization, and its governance is important, to approve resources? quality and origin from taken resources. Widely ranged, Enterolobium schomburgkii was chosen, to sign use of simple techniques to evaluate seeds production. For the assessment of initial growth (germination and emergency), packages of three different provenances seeds (Alta Floresta, Sinop and Xingu-Araguaia) were evaluated, in two environmental conditions (controlled/Mangelsdorf/30 °C and seedbed/open area/room temperature) and four dormancy breaks (CTEA18, CTEA4, ELX, EA18), four samples with 25 seeds, in factorial design. Variables as germination/plant growth and GSR were evaluated with non-parametrical tests. Provenances...
Tipo: Artigo de periódico
Palavras-chave: Sinop-MT; Alta Floresta-MT; Controle de Qualidade; Dormência; Regulamentação; Semente; Germinação; Faveira; Dormancy; Seeds; Governance; Quality control; Variability.
Ano: 2022
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1151960

Caracterização da função do gene FLC-LIKE durante a transição da ENDO- para dormência na macieira.
Provedor de dados: 119
Autores: SARTOR, T.; FALAVIGNA, V. da S.; CATTANI, A. M.; SILVEIRA, C. P.; MALABARBA, J.; PORTO, D. D.; GRYNBERG, P.; TOGAWA, R. C.; COSTA, M. M. do C.; SANTOS, H. P. dos; PASQUALI, G.; REVERS, L. F.
The MADS-box MdFLC-like gene was previously described within the major QTL for time of bud break in apple chromosome Chr09, and its expression gradually increases towards dormancy release.
Tipo: Resumo em anais e proceedings
Palavras-chave: FLOWERING LOCUS C; DAM1; FT2; Malus Domestica; Dormancy.
Ano: 2023
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1158404

Biometria e métodos para superação da dormência de sementes de faveira-rósea (Parkia oppositifolia Spruce ex Benth.) Fabaceae-mimosoideae.
Provedor de dados: 119
Autores: CRUZ, E. D.; CARVALHO, J. E. U.; LEÃO, N. V. M.
Resumo 131.
Tipo: Separatas
Palavras-chave: Parkia oppositifolia.; Dormência da Semente; Essência Florestal; Germinação.; Forest trees; Dormancy; Germination; Seeds.
Ano: 1997
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/397936

Determinação da conectividade xilemática em gemas dormentes de Malus × domestica através da aplicação de corante.
Provedor de dados: 119
Autores: CUSIN, R.; PORTO, D. D.; DORNELES, L. T.; REVERS, L. F.
A macieira (Malus × domestica Borkh.) caracteriza-se pelo estabelecimento da dormência no outono e a indisponibilidade de água livre nas gemas dormentes. Em regiões onde o acúmulo de frio para quebra de dormência não é suficiente, utilizam-se produtos químicos, como a cianamida hidrogenada (CH) para induzir a saída da dormência e uniformizar a brotação. Uma das dificuldades dos produtores é identificar a melhor época para a aplicação destes produtos químicos. No presente trabalho avaliou-se o transporte de água em gemas apicais durante a dormência, verificando a aplicabilidade da avaliação de padrões de captação de corantes hidrofílicos na estimativa do estádio da dormência. Para tal, foram utilizadas brindilas com gemas apicais fechadas de cultivares...
Tipo: Artigo de periódico
Palavras-chave: Brindilas; Condutividade hídrica; Cianamida hidrogenada; Twigs; Xylem conductivity; Macieira.; Maçã; Dormência.; Dormancy; Hydrogen cyanamide.
Ano: 2017
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1084283

Métodos para superação da dormência de sementes de Paricá, Schyzolobium amazonicum Huber ex ducke.
Provedor de dados: 119
Autores: LEÃO, N. V. M.; CARVALHO, J. E. U. de.
Tipo: Artigo de periódico
Palavras-chave: Schyzolobium amazonicum; Dormência da Semente; Germinação; Paricá; Dormancy; Germination; Seeds.
Ano: 1995
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/373135

The seed coat as modulator of seed-environment relationship in Fabaceae.
Provedor de dados: 119
Autores: SOUZA, F. H. D. de; MARCOS FILHO, J.
Tipo: Separatas
Palavras-chave: Seed.; Dormancy; Germination; Imbibition; Vigor.
Ano: 2001
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/43430

Obtenção de plantas de macieira (Malus x Domestica) com supressão de dormência através de edição genômica.
Provedor de dados: 119
Autores: MARASCHIN, F. dos S.; PIAZZA, S.; MALNOY, M.; REVERS, L. F.
Apple (Malus x domestica) is a temperate fruit tree with great economic importance in Brazil and in the world. Among the main abiotic factors that limit the productivity of Brazilian orchards is the need for enough chilling exposure to break bud dormancy.
Tipo: Resumo em anais e proceedings
Palavras-chave: DAM; CRISPR/CAS; ENVIRONMENTAL STRESS; FRUTICULTURE; Dormancy.
Ano: 2023
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1158402

Influências da dormencia tegumentar e do grau de maturação sobre a germinação de sementes de Hovenia dulcis Thunb.
Provedor de dados: 119
Autores: ZANON, A.; CARPANEZZI, A. A.
Tipo: Parte de livro
Palavras-chave: Uva-do-japao; Seed.; Dormência; Germinação; Hovenia Dulcis; Semente.; Germination.; Dormancy.
Ano: 1993
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/300870

Comparação de tratamentos para superar a dormência de sementes de canafístula (Peltophorum dubium (Sprengel) Taubert).
Provedor de dados: 119
Autores: BIANCHETTI, A.; RAMOS, A.
No Laboratório para Análise de Sementes da Unidade Regional de Pesquisa Florestal Centro-Sul - URPFCS/EMBRAPA, foi realizado um experimento com o objetivo de comparar tratamentos para superar a dormência de sementes de canafístula (Peltophorum dubium (Sprengel) Taubert.), procedentes de Campo Mourão, PR. Os tratamentos foram a imersão das sementes em ácido sulfúrico concentrado por tempos de dois a dez minutos, escarificação mecânica com lixa de óxido de alumínio no 80 por tempos de dois a 30 segundos e imersão em água quente com temperaturas de 50 a 90°C, deixando as sementes em repouso nesta água, fora do aquecimento por 24 horas. A germinação foi realizada em substrato de papel toalha em germinador regulado a 25oC. Os resultados deste trabalho...
Tipo: Artigo de periódico
Palavras-chave: Tratamento pre-germinativo; Treatment.; Canafístula; Dormência; Germinação; Peltophorum Dubium.; Germination.; Dormancy.
Ano: 1982
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/282218

Robustness of germination analysis methods for Copaifera langsdorffii Desf. (Fabaceae) seeds.
Provedor de dados: 119
Autores: SANTANA, D. G. de; LOBO, G. A.; SALOMAO, A. N.; PEREIRA, V. J.
Tipo: Separatas
Palavras-chave: Seedling classification; Validation; Dormancy; Repeatability; Reproducibility.
Ano: 2016
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1052635

Tecnologia de sementes de marica (Mimosa bimucronata (DC) O. Ktze.).
Provedor de dados: 119
Autores: FOWLER, J. A.; CARPANEZZI, A. A.
O trabalho foi realizado com os objetivos de obter tecnologias para: superar a dormência das sementes; determinar substratos e temperaturas mais adequados para a germinação em laboratório; e determinar ambiente e embalagem adequados para conservar as sementes de Mimosa bimucronata por 12 meses. Os tratamentos para superar a dormência das sementes foram imersões por 1, 3, 5, 8 e 10 minutos em ácido sulfúrico concentrado, e por 18 horas em água fora da fonte de calor, com temperaturas iniciais de 70, 75, 80, 85, 90 e 96°C. Para germinação das sementes em laboratório foram testados os substratos areia, vermiculita, papel toalha e papel mata-borrão nas temperaturas de 20, 25 e 30°C. Para a conservação das sementes em armazenamento por 12 meses foram testados...
Tipo: Artigo de periódico
Palavras-chave: Armazenamento; Dormência; Germinação.; Germination; Dormancy; Storage.
Ano: 1998
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/282185

Induction of senescence and foliar abscission in apple trees with the use of abscisic acid.
Provedor de dados: 119
Autores: ESPERANÇA, C. de F.; PETRI, J. L.; RUFATO, A. de R.; COUTO, M.; SEZERINO, A. A.; GABARDO, G. C.
Aims: Evaluate the effects of different concentrations of abscisic acid (ABA) on adult plants of productive age of ?Daiane? and ?Fuji Suprema?, to follow the ecophysiological effects and their efficiency in inducing leaf senescence, sprouting and productivity, in the Midwestern region of the state of Santa Catarina. Study Design: The experiment was arranged in a randomized block design with six replications. Place and Duration of Study: The experiment was carried out in the municipality of Caçador, Brazil (latitude 26º50?07? S, longitude 50º58?32? W, altitude 969 meters), during the growing seasons of 2013/2014 and 2014/2015. Methodology: The apple fruit tree were submitted to the following treatments: 1) Control (without treatment), 2) abscisic acid 750...
Tipo: Artigo de periódico
Palavras-chave: Malus domestica Borkh; Leaf abscission; Dormancy.
Ano: 2019
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1117780

Models to estimate chilling accumulation under subtropical climatic conditions in Brazil.
Provedor de dados: 119
Autores: MILECH, C. G.; SCARIOTTO, S.; DINI, M.; HERTER, F. G.; RASEIRA, M. do C. B.
Tipo: Artigo de periódico
Palavras-chave: Chilling accumulation; Dormancy; Temperate fruits.
Ano: 2018
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1095587

Type-B response regulators of the cytokinin-signaling pathway link hormonal stimulus and molecular responses to overcome dormancy in apple.
Provedor de dados: 119
Autores: CATTANI, A. M.; SILVEIRA, C. P.; REVERS, L. F.
Type-B response regulators (TBRRs) are essential transcription factors acting in the final steps of the plant cytokinin-signaling pathway. Cytokinin (CK) is an important phytohormone that stimulates cell division and is involved in plant dormancy overcome.
Tipo: Separatas
Palavras-chave: Type-B Response Regulators; Cytokinin; Apples; Dormancy.
Ano: 2018
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1104030

Métodos para superar a dormência de sementes de angelim da mata (Hymenolobium excelsum Ducke) Fabaceae-Papilionoideae.
Provedor de dados: 119
Autores: VEIGA, D. F. da; LEÃO, N. V. M.; CARVALHO, J. E. U. de.
Tipo: Parte de livro
Palavras-chave: Angelim da mata; Hymenolobium excelsum; Brasil.; Dormência da Semente; Essência Florestal; Germinação; Quebra da Dormência; Semente Florestal.; Amazonia; Forest trees; Dormancy; Dormancy breaking; Germination; Seeds.
Ano: 1999
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/395004

Apple FLC and TBRR genes regulate dormancy integrating hormonal stimulus and molecular responses.
Provedor de dados: 119
Autores: REVERS, L. F.; CATTANI, A. M.; SARTOR, T.; SILVEIRA, C. P.
Type&amp;#8208;B response regulators (TBRRs) act in the final steps of the cytokinin&amp;#8208;signaling pathway. Previous studies revealed the presence of TBRR binding sites at the promoter region of MdoDAM1 and MdoFLC , important genes for apple dormancy regulation. The aim of this study is to understand the MdoDAM1/MdoFLC gene expression regulation through TBRRs in response to cytokinin stimulus.
Tipo: Separatas
Palavras-chave: Apples; Genes; Dormancy.
Ano: 2018
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1104005

Methods for assessment of pre-harvest sprouting in wheat cultivars.
Provedor de dados: 119
Autores: GAVAZZA, M. I. A.; BASSOI, M. C.; CARVALHO, T. C. de; BESPALHOK FILHO, J. C.; PANOBIANCO, M.
ABSTRACT: The objective of this work was to test methods for pre&amp;#8209;harvest sprouting assessment in wheat cultivars. Fourteen wheat cultivars were grown in Londrina and Ponta Grossa municipalities, Paraná state, Brazil. They were sampled at 10 and 17 days after physiological maturity and evaluated using the methods of germination by rainfall simulation (in a greenhouse), in&amp;#8209;ear grain sprouting, and grains removed from the ears. The in&amp;#8209;ear grain sprouting method allowed the differentiation of cultivars, but showed different resistance levels from the available description of cultivars. The sprouting of grain removed from the ears did not allow a reliable distinction of data on germination in any harvest date or location. The...
Tipo: Artigo de periódico
Palavras-chave: Varidade.; Trigo; Germinação; Grão; Qualidade; Pré-colheita; Chuva artificial.; Wheat; Preharvest treatment; Rainfall simulation; Dormancy; Grains.
Ano: 2012
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/934003

Capacidade de produção de sementes em acessos do gênero Paspalum.
Provedor de dados: 119
Autores: BATISTA, L. A. R.; GODOY, R.
O objetivo deste trabalho foi determinar a variabilidade fenotipica da capacidade fisiológicas de produção de sementes em acessos de diferentes espécies do gênero Paspalum nas condições edafoclimaticas da região central do estado de São Paulo. O delineamento em blocos ao acaso com três repetições foi usado. As características época de florescimento principal e capacidade de diferenciação fisiológicas para produção de sementes foram determinadas. As sementes colhidas foram plantadas em outro ensaio a campo e também submetidas a testes de germinacao em condições de temperatura, luz e umidade controladas para determinacao de sua capacidade de germinacao e vigor inicial das plantas em condições de campo. Dos 215 acessos abaliados, 1,86% não se estabeleceram...
Tipo: Separatas
Palavras-chave: Estabelecimento; Florescimento; Variabilidade; Field establishment; Germoplasm; Seed production.; Dormência; Germinação; Germoplasma; Produção de Sementes.; Germination; Flowering; Dormancy; Variability.
Ano: 1998
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/44263

Importance of Abscisic acid (ABA) in the in vitro conservation of cassava (Manihot esculenta Crantz).
Provedor de dados: 119
Autores: BARRUETO CID, L. P.; CARVALHO, L. J. C. B.
Tipo: Separatas
Palavras-chave: Mandioca; Manihot Esculenta; Dormancy; Tissue culture.
Ano: 2008
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/190654

Métodos para superar a dormência tegumentar em sementes de jurema-preta (Mimosa hostilis Benth.).
Provedor de dados: 119
Autores: ARAUJO, M. de S.; ANDRADE, G. de C.
Este trabalho foi realizado com o objetivo de avaliar a eficiência de tratamentos físicos e químicos na germinação e no vigor (Índice de Velocidade de Germinação – IVG), em sementes de jurema-preta (Mimosa hostilis Benth.). Os tratamentos testados foram: sementes imersas em H2SO4 (98%) por 1, 5, 10 e 15 minutos; em água, a 100oC, por 1 e 3 minutos; em água à temperatura ambiente, por 36 e 72 horas; escarificação mecânica, por 20 e 40 segundos; choque térmico em estufa a 55oC por 24 e 48 horas e sementes em condições naturais. Os resultados obtidos que a escarificação ácida por 5 a 15 minuts, e a mecânica, por 20 a 40 segundos, mostraram-se mais eficientes na quebra da dormência de sementes dessa espécie.
Tipo: Artigo de periódico
Palavras-chave: Jurema-preta; Seed; Vigour.; Dormência; Germinação; Mimosa Hostilis; Semente.; Dormancy; Germination; Vigor.
Ano: 1983
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/282257

Germination of papaya seed in response to desiccation, exposure to subzero temperatures, and gibberellic acid.
Provedor de dados: 119
Autores: SALOMAO, A. N.; MUNDIM, R. C.
Tipo: Separatas
Palavras-chave: Liquid nitrogen; Carica Papaya; Dormancy; Gibberellins.
Ano: 2000
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1094496

Variabilidade na germinação e dormência em semente de Centrosema pubescens Benth.
Provedor de dados: 119
Autores: CRUZ, E. D.; CARVALHO, J. E. U. de; OLIVEIRA, R. P. de.
Tipo: Artigo de periódico
Palavras-chave: Germinação da semente; Feed legumes; Seed.; Centrosema Pubescens; Dormência da Semente; Leguminosa Forrageira; Variação Genética.; Germination; Genetic variation; Dormancy; Seeds.
Ano: 1997
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/373131

Atributos físicos de qualidade de frutos de caquizeiro tratados com cianamida hidrogenada em clima semiárido.
Provedor de dados: 119
Autores: MATOS, R. R. S. da S.; LOPES, P. R. C.; CAVALCANTE, L. F.; OLIVEIRA, I. V. de M.; GOMES, G. da S.
O presente trabalho teve como objetivo avaliar a atributos físicos de qualidade de frutos de caquizeiros ?Rama Forte? tratados com cianamida hidrogenada, no Vale do São Francisco.
Tipo: Anais e Proceedings de eventos
Palavras-chave: Cianamida hidrogenada; Atributos físicos de qualidade; Caquizeiro; Vale do São Francisco; Caqui; Indução; Dormência; Fenologia; Dormancy; Persimmons.
Ano: 2019
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1115109

Performance of 'Maxi Gala' apple trees as affected by budbreak promoters, in São Joaquim-SC
Provedor de dados: 119
Autores: PASA, M. da S.; FELIPPETO, J.; NAVA, G.; SILVA, C. P. da; BRIGHENTI, A. F.; CIOTTA, M. N.
Tipo: Artigo de periódico
Palavras-chave: Malus Domestica; Dormancy; Flowering; Hydrogen cyanamide.
Ano: 2018
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1098453

Comparação de tratamentos para superar a dormência de sementes de Acacia-negra (Acacia mearnsii De Wild.).
Provedor de dados: 119
Autores: BIANCHETTI, A.; RAMOS, A.
Trata da comparação de tratamentos para superar a dormência de sementes de acácia-negra (Acacia mearnsii De Wild.) procedentes da África do Sul. Foram testados os tratamentos de escarificação mecânica por dois e quatro segundos, imersão em água fervente por três a seis minutos, imersão em água quente (90OC) deixando-se as sementes na mesma água, fora do aquecimento por 24 horas e imersão em ácido sulfúrico comercial concentrado — H2SO4 (96% de concentração) por tempos de 10 a 15 minutos. Adicionalmente, foram também testados tempos de imersão em H2SO4 conc. (comercial) de 20 a 60 minutos. Os resultados deste trabalho permitiram recomendar para testes de laboratório, que exigem rapidez de operação, os tratamentos de escarificação mecânica com lixa de óxido...
Tipo: Artigo de periódico
Palavras-chave: Acacia-negra; Tratamento pre-germinativo; Treatment.; Acácia Mearnsii; Dormência; Germinação.; Germination.; Dormancy.
Ano: 1982
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/282217

Variabilidade na germinação e dormência em sementes de Leucaena leucocephala.
Provedor de dados: 119
Autores: ALMEIDA, A. C. R. de; CRUZ, E. D.; CARVALHO, J. E. U. de.
Tipo: Parte de livro
Palavras-chave: Tratamento da semente; Germinação da semente; Feed legumes.; Dormência da Semente; Leguminosa Forrageira; Leucaena Leucocephala.; Germination; Dormancy; Seed treatment; Seeds.
Ano: 1997
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/394516

Performance of 'Fuji Suprema' apple trees treated with budbreak promoters, in São Joaquim-SC.
Provedor de dados: 119
Autores: PASA, M. da S.; FELIPPETO, J.; NAVA, G.; SILVA, C. P. da.
Tipo: Artigo de periódico
Palavras-chave: Yield; Nitrogen-calcium solution.; Malus Domestica.; Dormancy; Flowering; Hydrogen cyanamide.
Ano: 2018
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1088133

Bíometry and pre-germínatíve treatments of seeds from an Amazon endemíc specíes
Provedor de dados: 109
Autores: Brito,Leomara Pessoa; Araújo Lacerda,José Dantas; Araújo Soares,Cintia; Monteiro Júnior,Franklin Luís Carlos; Souza,Magno Chagas; Aguiar Fonseca e Souza,Áurea Izabel; Lima,Clenes Cunha; Rodrigues,Marcos.
Abstract This study aimed to verify the impact of different methods of overcoming dormancy in the germination of Ipomoea cavalcantei seeds, in addition to surveying the biometric data of its seeds and fruits. Ripe fruits were randomly collected from the species' habitat, which is a unique ecosystem characterized by small vegetation and iron outcrops. For the biometric analyses, the weight, moisture content, length, width, and thickness of 100 fruits and 100 seeds were determined. To analyse the efficiency of overcoming seed dormancy, six different treatments were tested, including mechanical, physical, and chemical methods, and the resultant germinability, average germination time, and germination speed index were evaluated. Further, in order to estimate...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Conservation unit; Dormancy; Ipomoea cavalcantei; Mining; Scarification.
Ano: 2022
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122022000100081

Fruit biometry and seed germination of Syagrus romanzoffiana (Cham.) Glassm
Provedor de dados: 39
Autores: Goudel,Flora; Shibata,Marília; Coelho,Cileide Maria Medeiros; Miller,Paul Richard Momsen.
Syagrus romanzoffiana (Cham.) Glassm. is a species native to Brazil that is of ecological and aesthetic importance. This study aims to describe the biometric characteristics of S. romanzoffiana fruits and to assess the effects that treatments meant to overcome dormancy and partial drying have on seed germination. For biometric characterization, each repetition consisted of 50 fruits from eight clusters (total, 400 fruits). To evaluate methods for overcoming dormancy, seeds representative of populations were treated by perforation of the operculum; perforation of the operculum and immersion in water for 24 hours; cracking; exposure to fire for three minutes; and non-removal of fibers. There was also a control group. In a second experiment, seeds were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dormancy; Syagrus romanzoffiana; Palm; Drying; Variability.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000100015

Seed traits of species from South Brazilian grasslands with contrasting distribution
Provedor de dados: 39
Autores: Martins,Alexandre Cristante; Marchioretto,Rafaella Migliavacca; Vieira,Ariane Tonetto; Stiehl-Alves,Eudes Maria; Santos,Eliane Kaltchuk dos; Souza-Chies,Tatiana Teixeira de.
ABSTRACT South Brazilian grasslands are among the most species-rich grasslands worldwide yet they have been suffering ongoing degradation due to land-use. Little is known about the reproductive ecology of the native species of these grasslands. Thus, our goal was to characterize seed traits and germination requirements of three native species of the tribe Tigridieae (Iridaceae, Iridoideae) due to its richness in the Pampa biome and the contrasting morphology, cytogenetics, and geographic distributions of its representatives. We tested if closely related species possess similar seed traits and whether species with wider distributions have broader germination requirements. Seed production and mass were estimated, and morphological analyses, germination...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dormancy; Functional traits; Germination; Grasslands; Iridaceae; Photoinhibition; Regeneration niche; Reproductive ecology; Seed morphology; Time-to-event analysis.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062020000400730

Tratamentos para superar a dormência de sementes de Acacia mangium Willd - DOI: 10.4025/actasciagron.v30i2.1786
Provedor de dados: 1
Autores: Rodrigues, Adriana Paula D'Agostini Contreiras; Universidade para o Desenvolvimento do Estado e da Região do Pantanal; Kohi, Marilda Cervi; Universidade para o Desenvolvimento do Estado e da Região do Pantanal; Pedrinho, Denise Renata; Universidade para o Desenvolvimento do Estado e da Região do Pantanal; Arias, Edilson Rubens Arrabal; Universidade para o Desenvolvimento do Estado e da Região do Pantanal; Favero, Silvio; Universidade para o Desenvolvimento do Estado e da Região do Pantanal.
Objetivou-se o estudo de diferentes tratamentos para superar a dormência de sementes da espécie arbórea Acacia mangium Willd. Os tratamentos avaliados foram: imersão das sementes em ácido sulfúrico (96% PA) por 15, 30, 60 e 90 minutos; imersão das sementes em água fervente (100°C) por 15, 30 e 60 segundos e testemunha sem tratamento prévio das sementes. Foram utilizadas quatro repetições de 100 sementes por tratamento. Após tratadas, colocaram-se as sementes para germinar em caixas gerbox, com papel filtro umedecido, na temperatura média de 27,5ºC. As avaliações foram diárias, por 21 dias. Foram avaliadas as seguintes variáveis: porcentagem de germinação, primeira contagem do teste de germinação, velocidade de germinação e o índice de velocidade de...
Palavras-chave: 5.01.03.05-9 Melhoramento Vegetal Acacia mangium; Sementes; Dormência; Escarificação 5.01.03.05-9 Melhoramento Vegetal Acacia mangium; Seeds; Dormancy; Scarification.
Ano: 2008
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/1786

Can “Caricia” and “Princesa” apples be considered low-chilling cultivars?
Provedor de dados: 1
Autores: Castro, Damián César; Alvarez, Norma; Gabriel, Paola; Buyatti, Marcela; Favaro, Juan Carlos; Gariglio, Norberto.
The purpose of this work was to study the response of two apple cultivars bred for low chilling environments to artificial chilling accumulation. Two trials were carried out; in experiment one, excised shoots were randomly taken from “Caricia” and “Princesa”, and in experiment two, intact and excised shoots of “Caricia”, “Princesa” and “Gala” (control) were collected. After collection, both shoot types were exposed to artificial chilling accumulation (4.0 ± 0.5°C) from 0 to 1200 chill units (CU). Bud break of mixed buds of “Caricia” and “Princesa” was higher than 50% between 0 CU to 1200 CU, irrespective of shoot type. Bud break of “Gala” mixed buds exceeded 50% only in intact shoots after accumulating 900 CU. The mean time to bud break of “Caricia” and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Malus domestica Borkh; Dormancy; Bud break; Lack of chilling; Heat requirements.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/30996

Germination and emergence of passion fruit (Passiflora edulis) seeds obtained by self- and open-pollination
Provedor de dados: 1
Autores: Santos, Carlos Eduardo Magalhães dos; Morgado, Marcos Antônio Dell'Orto; Matias, Rosana Gonçalves Pires; Wagner Júnior, Américo; Bruckner, Claudio Horst.
Seed dormancy is an important adaptive mechanism in many species and is generally lost during plant domestication because of selection that occurs through the collection and planting of seeds. We compared germination and seedling emergence in selfed and open-pollinated progenies obtained from eight passion fruit vines (genotypes). Self-pollination was performed at the button stage to overcome self-incompatibility. The experiment was a randomized block design in a factorial scheme (2 x 8; type of progeny x genotypes) with four replicates and 50 seeds per experimental unit. At 14, 21 and 28 days after sowing, the germination percentage and the emergence speed index were analyzed. The total length of seedlings (cm), shoot length (cm), radicle length (cm) and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.01.03.05-9 Passiflora edulis; Dormancy; Selection; Dominance. Melhoramento Vegetal.
Ano: 2015
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/19616

Physiological quality of castor bean seed genotypes stored at two temperatures
Provedor de dados: 1
Autores: Drumond, Anailda Angélica Lana; Sales, Juliana de Fatima; Zuchi, Jacson; Camelo, Gessimar Nunes; Souza, Moara Mariely Vinhais.
Environment and storage time influence stored seed quality, especially for oilseeds such as castor beans because they have a high lipid content and are more prone to deterioration. This study evaluated the physiological quality of seeds from three castor bean genotypes stored at 10 and 20°C for 300 days. The experimental design was completely randomized, with 4 replications, in a 2 x 6 (2 temperatures x 6 storage periods) split-plot design. The seeds were placed in low-density polypropylene bags and stored in climatic chambers at 10 and 20°C, in which the temperature and relative humidity were registered. Physiological quality (germination, germination rate index, emergence, rate of emergence, electrical conductivity and accelerated aging) were evaluated...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ricinus communis L.; Seed conservation; Dormancy; Temperature. Produção e Beneficiamento de Sementes.
Ano: 2019
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/43583

Southern highland papaya (Vasconcellea quercifolia A. St.-Hil.): Do fruit ripening and harvesting time affect seed germination?
Provedor de dados: 1
Autores: Urtasun, María Manuela; Giamminola, Eugenia Mabel; Viana, Marta Leonor de.
In this work, we report the effects of the harvesting time, the stages in fruit ripening and the influence of potassium nitrate in V. quercifolia seed germination. In addition, information about the storage period and light requirements is provided. Fruits were harvested at the beginning and at the end of the fruiting season, and they were classified into five ripening categories. Seed germination was evaluated with two factorial experiments: 1) harvesting time, fruit ripening, and pre-germination treatment; 2) storage and light requirements. The response variables were germination percentage, mean germination time, and seedling vigor. Seeds harvested at the beginning of the season appeared to be less dormant and they were not influenced by fruit ripening...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Caricaceae; Dormancy; Photoblastism; Potassium nitrate.
Ano: 2019
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/42825

Advances in the production of temperate fruits in the tropics
Provedor de dados: 1
Autores: Pio, Rafael; Souza, Filipe Bittencourt Machado de; Kalcsits, Lee; Bisi, Rayane Barcelos; Farias, Daniela da Hora.
The present study aimed to review the advances in the production of temperate fruits to determine future research directions that improve production in the tropics. Temperate fruits are no longer only produced in regions characterized by a cold winter period. These fruits are also produced in the sub-tropical and tropical regions characterized by mild winter or even the absence of chilling conditions often required by the tree to break dormancy. Currently, temperate fruit production is possible in certain regions of South America, Africa and Asia that are near to the Equator. However, temperate tree fruit production in tropical regions requires modified techniques to overcome dormancy and allow adequate flowering, growth and productivity. The main...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fitotenica chilling requirement; Dormancy; Climate conditions; Tropical; Subtropical. Manejo cultural.
Ano: 2018
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/39549

Advances in the production of temperate fruits in the tropics
Provedor de dados: 1
Autores: Pio, Rafael; Souza, Filipe Bittencourt Machado de; Kalcsits, Lee; Bisi, Rayane Barcelos; Farias, Daniela da Hora.
The present study aimed to review the advances in the production of temperate fruits to determine future research directions that improve production in the tropics. Temperate fruits are no longer only produced in regions characterized by a cold winter period. These fruits are also produced in the sub-tropical and tropical regions characterized by mild winter or even the absence of chilling conditions often required by the tree to break dormancy. Currently, temperate fruit production is possible in certain regions of South America, Africa and Asia that are near to the Equator. However, temperate tree fruit production in tropical regions requires modified techniques to overcome dormancy and allow adequate flowering, growth and productivity. The main...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chilling requirement; Dormancy; Climate conditions; Tropical; Subtropical.; Manejo cultural.
Ano: 2018
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/39549

Características germinativas de sementes de Ananas ananassoides (Baker) L. B. Sm. (Bromeliaceae) - doi: 10.4025/actascibiolsci.v32i2.1693
Provedor de dados: 3
Autores: Anastácio, Maristela Rosália; programa de pós-graduação, Universidade Federal de Uberlândia; Santana, Denise Garcia; Universidade Federal de Uberlândia.
Ananas ananassoides é uma planta perene com hábito de crescimento herbáceo e que tem enorme potencial paisagístico porque apresenta flores e brácteas com coloração exuberante e folhas com margens espinescentes que estão distribuídas em roseta. O objetivo deste experimento foi o de avaliar as características germinativas e o efeito de tratamentos pré-germinativos nas sementes da espécie. Primeiro, em um delineamento inteiramente casualizado, foram investigados seis tratamentos em quatro repetições de 25 sementes. Os tratamentos constaram da imersão em água destilada à temperatura ambiente (25 &amp;plusmn; 1,5&amp;deg;C) durante 24, 48 e 72h, imersão em água quente a 90&amp;deg;C durante 2 min. e imersão em ácido sulfúrico p.a. durante 2 min. e com posterior...
Palavras-chave: 2.03.00.00 Bromélia; Dormência; Espécie ornamental 2.03.00.00 Bromeliad; Dormancy; Ornamental species.
Ano: 2010
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/1693

Effective microorganisms inoculant: Diversity and effect on the germination of palisade grass seeds
Provedor de dados: 42
Autores: SANTOS,LIDIANE F. DOS; LANA,ROGÉRIO P.; SILVA,MARLIANE C.S. DA; VELOSO,TOMÁS G.R.; KASUYA,MARIA CATARINA M.; RIBEIRO,KARINA G.
Abstract  Effective microorganisms (EM) are inoculants formed by fungi and bacteria isolated from soil. EM are commonly used by farmers on agronomic crops to stimulate plant growth, but their composition and their benefits has been controverted. This study aimed to analyze the diversity of microorganisms growing in three EM inoculants, as well as to evaluate their efficiency in the germination of palisade grass seeds. The total DNA of the three EM inoculants was extracted, the 16S rRNA and ITS genes were amplified by PCR and sequenced on the Illumina MiSeq platform. Germination tests were conducted with three type of the EM, in three concentration and two times of the immersion. The bacterial group was the most abundant in EM, followed by fungi. Bacterial...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversity; Dormancy; Sequencing; Sulfuric acid.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652020000201002

Germination in seed species ingested by opossums: implications for seed dispersal and forest conservation
Provedor de dados: 52
Autores: Cáceres,Nilton Carlos; Monteiro-Filho,Emygdio Leite de Araújo.
Seed germination in plant species consumed by opossums, genus Didelphis, was investigated in southern Brazil, in order to improve knowledge of the strategies of zoochorous plants in the Neotropics. Seeds were obtained from opossum feces. Thirteen of the most frequent species in the diet of local opossums were tested for germination rates and germination responses under different qualities (red/far red ratio) and different intensities of light. Most seeds from feces germinated similarly to the control groups, except for seeds of Rubus rosifolius, which appeared to depend on gut passage. Other experiments revealed that most seeds in the opossums' diet were of pioneer species, with most germination occurring during favorable humid conditions in the rainy...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Seed germination; Light quality; Dormancy; Marsupials.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132007000700002

Dormancy breaking and germination of Enterolobium contortisiliquum (Vell.) Morong seed
Provedor de dados: 52
Autores: Malavasi,Ubirajara Contro; Malavasi,Marlene de Matos.
Enterolobium contortisiliquum (Vell.) Morong. is a Mimosaceae tropical tree species recommended for heterogeneous reforestation of degraded tropical areas. "Timburi" seeds present low germination due to the high degree of seed dormancy. Different methods to overcome seed dormancy was compared: sanding, sanding followed by 24 hours water (25ºC) soaking, imbibition in boiling water followed by exposure to water at room temperature (28ºC), and concentrated sulfuric acid (5, 15, 30, 60, 120 or 180 minutes) followed by washing with tap water. All seeds were germinated in rolled towels at 25ºC and 12 hours photoperiod. Total germination, first count of germination test and germination velocity index were recorded. Mechanical scarification (sanding), chemical...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dormancy; Forest nursery; Germination; Seed.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132004000600003

Heart rate and body weight alterations in juvenile specimens of the tropical land snail Megalobulimus sanctipauli during dormancy
Provedor de dados: 56
Autores: Rizzatti,A.C.S.; Romero,S.M.B.
The time course of heart rate and body weight alterations during the natural period of dormancy were determined in active feeding and dormant juvenile specimens of Megalobulimus sanctipauli. In both groups, heart rate markedly decreased during the first 40 days of dormancy, tending to stabilize thereafter. This time period coincided with the decrease in environmental temperature during autumn-winter. At the end of the dormancy period, surviving active feeding and dormant snails showed a significant decrease in heart rate which, however, was significantly greater in the latter group. Total body weight decreased concomitantly with heart rate in dormant snails but remained constant in active feeding snails. Body hydration induced significant increases in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dehydration; Dormancy; Heart rate; Snail; Starvation; Megalobulimus sanctipauli.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2001000700015

Dormancy models for Mycobacterium tuberculosis: A minireview
Provedor de dados: 58
Autores: Alnimr,Amani M.
Dormancy models for Mycobacterium tuberculosis play important roles in understanding various aspects of tuberculosis pathogenesis and in the testing of novel therapeutic regimens. By simulating the latent tuberculosis infection, in which the bacteria exist in a non-replicative state, the models demonstrate reduced susceptibility to antimycobacterial agents. This minireview outlines the models available for simulating latent tuberculosis both in vitro and in several animal species. Additionally, this minireview discusses the advantages and disadvantages of these models for investigating the bacterial subpopulations and susceptibilities to sterilization by various antituberculosis drugs.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dormancy; Latency; Tuberculosis; Stationary-phase.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822015000300641

Possible involvement of proteasome activity in ethylene-induced germination of dormant sunflower embryos
Provedor de dados: 61
Autores: Borghetti,Fabian; Noda,Fabio Nakamura; Sá,Cezar Martins de.
Freshly harvested sunflower seeds (Helianthus annuus L., Asteraceae) present physiological dormancy localized at the embrionary axis which prevents germination at low temperatures. However, dormant embryos reach about 100 % germination when incubated with the phytohormone ethylene during imbibition. To examine whether proteinase activities are implicated in the breaking of dormancy by ethylene, dormant embryos were treated with the proteinase inhibitors leupeptin, E64 and the proteasome specific inhibitor clasto-lactacystin ß-lactone (lactacystin). A few embryos (&lt; 10 %) germinated at 10 ºC in absence of ethylene but ethylene-treated embryos reached high germinability (~90 %) in the presence of leupeptin, E64, water and DMSO. On the other hand,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Helianthus annuus; Dormancy; Ethylene; Lactacystin; Proteasome.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202002000200007

Germination of dormant seeds of Stylosanthes humilis as promoted by ethylene accumulation in closed environments
Provedor de dados: 61
Autores: Ribeiro,Dimas Mendes; Barros,Raimundo Santos.
Germination of scarified dormant seeds of Townsville stylo (Stylosanthes humilis) is very low in Petri dishes, but may be appreciable in sealed Erlenmeyer flasks if ethylene accumulates in their atmospheres. When ethylene in the flask atmosphere was fixed by a mercuric perchlorate solution, emanation of the gaseous regulator and germination of dormant seeds were drastically decreased. On the other hand, ethylene produced by dormant seeds and accumulated in the flask atmosphere led to a further enhancement of ethylene accumulation and a corresponding increased seed germination. Germination of both dormant and non-dormant seeds did not occur when ethylene biosynthesis was completely blocked.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Townsville stylo; Closed environments; Dormancy; Ethylene; Germination; Seeds.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202004000200003

Seed germination in Cerrado species
Provedor de dados: 61
Autores: Zaidan,Lilian B. P.; Carreira,Rosana C.
The aim of this review is to comment on the available data about germination of seeds from herb, shrub and tree species of the Cerrado after the publication of the review written by Felippe and Silva in 1984. Studies on seed germination of herbaceous species focused mainly on the responses of seeds to light, different ranges of temperature and storage in the soil. The majority of seeds from herb species germinate between 20°C and 30°C, and are photoblastic. Alternate temperatures favored germination in some seeds, but changed light sensitivity of the achenes of Bidens gardneri. Seeds of most of the shrub species of Melastomataceae are positive photoblastic; among the Velloziaceae, germination in the dark was observed in some species. Other shrub species...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dormancy; Photoblastism; Soil seed bank; Temperature.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202008000300002

Methods to Break Seed Dormancy of Rhynchosia capitata, a Summer Annual Weed
Provedor de dados: 117
Autores: Haider Ali,Hafiz; Tanveer,Asif; Ather Nadeem,Muhammad; Naeem Asghar,Hafiz.
Dormancy of weed seeds is a significant feature contributing to their survival rate since it helps the weeds to avoid herbicides and other weeding practices along with unfavorable environmental conditions. We investigated the effects of different dormancy breaking treatments on the germination of Rhynchosia capitata, a common summer annual weed, which is emerging as a weed threat in Pakistan. Seeds were soaked in thiourea, KNO3, HCl, HNO3, and H2SO4, and they were also mechanically scarified (sandpaper). Results indicated that R. capitata seeds show signs of physical dormancy that is mainly due to the impermeability of their coat. Mechanical scarification and acid scarification (soaking of seeds in H2SO4 for 60 and 80 min and in HCl for 12 and 15 h) were...
Tipo: Journal article
Palavras-chave: HCl; HNO3; H2SO4; Dormancy; Germination.
Ano: 2011
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392011000300021

Importance of Abscisic Acid (ABA) in the In Vitro Conservation of Cassava (Manihot esculenta Crantz)
Provedor de dados: 117
Autores: Barrueto Cid,L. Pedro; Carvalho,Luiz L.C.B.
The conventional technology for in vitro plant conservation for cassava (Manihot esculenta Crantz) germplasm collections is laborious due to the need for several sub-culturing procedures per year. This practice implies high costs for medium preparation, tissue culture tubes, time-consuming labor, risks of contamination, mislabeling of accession, and the need for large growth chambers. We have developed a new procedure using in vitro cultivated nodal axillary buds treated with different abscisic acid (ABA) concentrations to reduce the time for recycling transplants cultivated in a SP basic nutritive medium. Nodal explants were stored for three months with ABA. Plants were obtained after nodal axillary buds were placed in SP medium without ABA. Results...
Tipo: Journal article
Palavras-chave: Tissue culture; Dormancy.
Ano: 2008
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392008000300011

Mild temperatures on bud breaking dormancy in peaches
Provedor de dados: 65
Autores: Chavarria,Geraldo; Herter,Flávio Gilberto; Raseira,Maria do Carmo Bassols; Rodrigues,Alexandre Couto; Reisser,Carlos; Silva,João Baptista da.
The search for low chill cultivars for peach production in areas with low chill accumulation (temperatures below 7.2°C) has stimulated studies about the higher temperatures effects on low chill cultivars. The objective of this research was to evaluate the influence of mild temperatures on flowering and leafing of 'Turmalina' and 'Ágata' cultivars with low and medium low chilling requirements, respectively. Plants obtained by grafting flower twigs in the autumn, after the grafting, were submitted to chilling treatments (150, 250, 350, 500 and 672 hours) at three temperature levels (5°C, 10°C and 15°C). After the end of the treatments, the plants had been taken to greenhouse (20°C±5°C) and evaluated weekly. The results showed that satisfactory flower and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chilling requirement; Dormancy; Winter; Budbreak.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782009000700010

Germinación en semilla de chile piquín (Capsicum annuum var. aviculare).
Provedor de dados: 32
Autores: Cano Vázquez, Anaid.
El chile piquín es una planta silvestre que presenta ciertos mecanismos para asegurar la perpetuación de la especie. Dentro de estos mecanismos se encuentra la latencia de sus semillas. La germinación de las semillas de chile piquín presenta problemas para siembras  intensivas comerciales. En este trabajo se planteó: 1) comparar diversas colectas en cuanto a su capacidad germinativa; 2) indagar si la baja germinación se debe a impermeabilidad en la semilla o a alguna característica estructural de la semilla; 3) encontrar un tratamiento de preacondicionamiento que mejore la germinación de la semilla y 4) probar la germinación in vitro como un método alternativo para obtener plántula en un corto tiempo. Para prevenir la interferencia de microorganismos...
Palavras-chave: Germinación; Impermeabilidad; Latencia; Desinfección; Germination; Permeability; Dormancy; Disinfection; Fisiología Vegetal; Maestría.
Ano: 2013
URL: http://hdl.handle.net/10521/2114

Caracterización morfológica de fruto y semilla de nanche Byrsonima crassifolia (L.) Kunth y su relación con la capacidad germinativa
Provedor de dados: 32
Autores: Jaimes Albíter, Camelia.
En la presente investigación, se buscó demostrar que la morfología de fruto y  semilla  de nanche, está relacionada con el comportamiento germinativo de la  especie, así como identificar el tipo de latencia que presenta y evaluar el efecto de  diversos tratamientos pre-germinativos, para facilitar la germinación de las semillas;  para ello, se evaluaron caracteres morfológicos cuantitativos y cualitativos de  planta, hoja, fruto y semilla y se realizaron dos  pruebas de germinación estándar,  una con semillas extraídas de los endocarpios y la otra con los endocarpios  conteniendo a las semillas. La caracterización morfológica  evidenció que  el  nanche es una especie ampliamente variable, y que los endocarpios de los  ecotipos evaluados presentan dureza,...
Tipo: Tesis
Palavras-chave: Caracterización morfológica; Escarificación; Germinación; Latencia; Tratamientos pre-germinativos; Morphologic characterization; Scarification; Germination; Dormancy; Pre-germinative treatments.
Ano: 2009
URL: http://hdl.handle.net/10521/1180

Propagación sexual y tolerancia a la desecación en nanche (Byrsonima crassifolia L.) Kunth.
Provedor de dados: 32
Autores: Jaimes Albíter, Camelia.
El nanche es una especie forestal frutícola de amplio espectro utilitario, pero la germinación de sus semillas es compleja; por ello, el objetivo de la investigación fue conocer la dinámica germinativa de las semillas de clima cálido húmedo y clima semicálico, en el banco del suelo y en condiciones de invernadero; así como clasificarlas fisiológicamente, y proponer alternativas adecuadas para conservar este recurso fitogenético. Se encontró que las semillas de clima cálido húmedo forman un banco de tipo transitorio, en tanto que, para las de clima semicálido fue persistente de corto plazo. Por otro lado, en invernadero se observó que la humedad del suelo no representa inconveniente para la germinación de las semillas de ambos climas, si no que esto depende...
Palavras-chave: Byrsonima crassifolia; Latencia; Recalcitrante; Conservación in situ; Conservación ex situ; Dormancy; In situ conservation; Ex situ conservation; Producción de Semillas; Doctorado; Recalcitrant.
Ano: 2013
URL: http://hdl.handle.net/10521/2179

Caracterización morfológica de fruto y semilla de nanche Byrsonima crassifolia (L.) Kunth y su relación con la capacidad germinativa
Provedor de dados: 32
Autores: Jaimes Albíter, Camelia.
En la presente investigación, se buscó demostrar que la morfología de fruto y  semilla  de nanche, está relacionada con el comportamiento germinativo de la  especie, así como identificar el tipo de latencia que presenta y evaluar el efecto de  diversos tratamientos pre-germinativos, para facilitar la germinación de las semillas;  para ello, se evaluaron caracteres morfológicos cuantitativos y cualitativos de  planta, hoja, fruto y semilla y se realizaron dos  pruebas de germinación estándar,  una con semillas extraídas de los endocarpios y la otra con los endocarpios  conteniendo a las semillas. La caracterización morfológica  evidenció que  el  nanche es una especie ampliamente variable, y que los endocarpios de los  ecotipos evaluados presentan dureza,...
Palavras-chave: Caracterización morfológica; Escarificación; Germinación; Latencia; Tratamientos pre-germinativos morphologic characterization; Scarification; Germination; Dormancy; Pre-germinative treatments.
Ano: 2012
URL: http://hdl.handle.net/10521/796

Caracterización morfológica de fruto y semilla de nanche Byrsonima crassifolia (L.) Kunth y su relación con la capacidad germinativa
Provedor de dados: 32
Autores: Jaimes Albíter, Camelia.
En la presente investigación, se buscó demostrar que la morfología de fruto y  semilla  de nanche, está relacionada con el comportamiento germinativo de la  especie, así como identificar el tipo de latencia que presenta y evaluar el efecto de  diversos tratamientos pre-germinativos, para facilitar la germinación de las semillas;  para ello, se evaluaron caracteres morfológicos cuantitativos y cualitativos de  planta, hoja, fruto y semilla y se realizaron dos  pruebas de germinación estándar,  una con semillas extraídas de los endocarpios y la otra con los endocarpios  conteniendo a las semillas. La caracterización morfológica  evidenció que  el  nanche es una especie ampliamente variable, y que los endocarpios de los  ecotipos evaluados presentan dureza,...
Palavras-chave: Caracterización morfológica; Escarificación; Germinación; Latencia; Tratamientos pre-germinativos morphologic characterization; Scarification; Germination; Dormancy; Pre-germinative treatments.
Ano: 2012
URL: http://hdl.handle.net/10521/854

The effect of chilling on seed germination of placea species (Asparagales: Amaryllidaceae), an endemic genus to central Chile
Provedor de dados: 73
Autores: Guerrero,Pablo C; Sandoval,Ana C; León-Lobos,Pedro.
The effect of chilling on germination was examined for six Placea species, a genus in the Amaryllidaceae endemic to the Andes and Coastal Range of central Chile. Based on their natural environment, we hypothesized that low temperatures would be important for germination in theses species. We addressed two questions (i) do Placea seeds require chilling for seed germination? (ii) if they required chilling, does thermal history before chilling affect their responsivity to chilling? At 4ºC seeds of all species germinated faster and to a higher level than at 25ºC. After 28 days, when seeds held at 25ºC were moved to 4ºC, germination increased significantly, however at the end of the assay, their germination was still lower than those seeds initially at 4ºC....
Tipo: Journal article
Palavras-chave: Seed physiology; Dormancy; Biodiversity.
Ano: 2007
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432007000100005

Physiological and biochemical changes in lettuce seeds during storage at different temperatures
Provedor de dados: 75
Autores: Catão,Hugo Cesar RM; Gomes,Luiz Antonio Augusto; Guimarães,Renato M; Fonseca,Pedro Henrique F; Caixeta,Franciele; Galvão,Alexandre G.
ABSTRACT Dormancy in lettuce seeds is a process not yet fully understood. High storage temperatures can cause seed dormancy promoting physiological and enzymatic changes. The goal of this study was to investigate the influence of storage period and environments on the quality and dormancy of different lettuce cultivars. We also investigated the biochemical changes. A completely randomized experimental design was used in a 4x8x3 factorial arrangement to evaluate physiological quality on different storage periods (30, 60, 90 and 120 days) and environments (15, 25 and 35°C) of seeds from eight lettuce cultivars (Everglades, Babá de Verão, Elisa, Luiza, Grand Rapids, Hortência, Salinas 88 and Rubete). The biochemical activity was accessed by tetrazolium test...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lactuca sativa; Thermotolerance; Thermoinhibition; Dormancy; Enzymatic activity.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362018000100118

Yield and phenology of yam as affected by the physiological rest period of seed-rhizomes
Provedor de dados: 75
Autores: Oliveira,Ademar P de; Moura,Márcio F de; Alves,Edna U; Alves,Anarlete U; Oliveira,Arnaldo Nonato P de; Leonardo,Francisco de Assis P; Cruz,Iordam da S.
The objective of this work was to evaluate the effects of the rest period of seed-rhizomes in the phenology and yield of yam Da Costa (Dioscorea cayennensis). The experiment was carried out in field conditions at the Federal University of Paraíba, in Areia, Brazil, from January to December 2004, in an Ustpsamment soil. A completely randomized block design was used to test three treatments, 60-, 80-, and 100-day seed-rhizome rest periods, with seven replications. Plant emergency was evaluated every ten days from 40 to 90 days after planting (DAP), as well as plant height, evaluated up to 80 DAP. The average mass of commercial rhizomes and the yield of commercial and seed-rhizomes were also assessed. At 40, 50, and 60 days after planting, plant emergency was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dioscorea cayennensis; Post-harvest; Dormancy; Emergency; Plant height.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362008000200005

Hatchability of gemmules of two Neotropical freshwater sponges (Porifera: Spongillida)
Provedor de dados: 76
Autores: Calheira,Ludimila; Santos,Paulo J. P.; Pinheiro,Ulisses.
ABSTRACT Inland waters experience extreme environmental conditions determining the evolution of several adaptive strategies of the fauna to these variable conditions. Freshwater sponges produce resisting bodies called gemmules that contain totipotent cells and specialized spicules (gemmuloscleres). Completely formed gemmules exhibit low metabolic rates and may become dormant during periods of environmental stress. Until now, few species had their hatchability tested against different environmental conditions. The purpose of the present study was to test the capacity of hatching gemmules of two freshwater sponge species (Heteromeyenia cristalina Batista, Volkmer-Ribeiro &amp; Melão, 2007 and Radiospongilla inesi Nicacio &amp; Pinheiro, 2011) from inland...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dormancy; Freshwater sponges; Hatching; Spongillidae.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212020000100201

Métodos para superar a dormência de sementes de bracatinga (Mimosa scabrella Benth.).
Provedor de dados: 14
Autores: BIANCHETTI, A.
Tipo: Folhetos
Palavras-chave: Mimosa scabrella Benth; Seed; Propagação; Bracatinga; Espécie nativa; Semente; Dormência; Dormancy.
Ano: 1981
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/290904

Biometria e métodos para superação da dormência de sementes de taxi-branco, Sclerolobium paniculatum Vogel.
Provedor de dados: 14
Autores: CARVALHO, J. E. U. de; FIGUEIREDO, F. J. C.
Tipo: Folhetos
Palavras-chave: Taxi-branco; Belém; Pará; Brasil; Leguminous; Seed; Biometria; Dormência; Germinação; Leguminosa; Sclerolobium Paniculatum; Semente; Amazonia; Germination; Biometry; Dormancy.
Ano: 1991
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/382566

Recomendacoes para quebra de dormencia em sementes de Galactia sp.
Provedor de dados: 14
Autores: ANTONIO, F. G.; PENTEADO, M. I. de O.; SEIFFERT, N. F.
CNPGC.
Tipo: Folhetos
Palavras-chave: Seed; Fisiology; Galáctia; Dormência; Fisiologia; Leguminosa; Leguminosae; Semente; Dormancy.
Ano: 1985
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/316589

Dormência em sementes florestais.
Provedor de dados: 14
Autores: FOWLER, J. A. P.; BIANCHETTI, A.
Categorias de dormencia; dormencia tegumentar ou exogena, dormencia embrionaria ou endogena; Causas da dormencia; Metodos para a superacao da dormencia; Dormencia combinada
Tipo: Folhetos
Palavras-chave: Forest; Propagação; Semente; Dormência; Floresta; Germinação; Dormancy; Germination; Seed trees.
Ano: 2000
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/290718

Tratamentos para superar a dormência de sementes de bandarra (Schizolobium amazonicum Huber ex Ducke).
Provedor de dados: 14
Autores: BIANCHETTI, A.; TEIXEIRA, C. A. D.; MARTINS, E. P.
Tipo: Folhetos
Palavras-chave: Propagação; Parica; Espécie nativa; Dormência; Semente; Schizolobium Amazonicum; Dormancy; Seeds.
Ano: 1999
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/290858

Germinação e dormência de sementes de Tridax procumbens L.
Provedor de dados: 14
Autores: IKEDA, F. S.; CARMONA, R.; MITJA, D.; GOMES, A. C.; GUIMARÃES, R. M.
Tipo: Folders
Palavras-chave: Planta daninha; Planta invasora; Dormência da Semente; Germinação; Tridax procumbens; Dormancy; Germination; Plant propagation; Weeds.
Ano: 2006
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/570140

Curva de embebição e germinação de sementes de Passiflora setacea DC. (BRS Pérola do Cerrado) submetidas a distintos tratamentos pré-germinativos.
Provedor de dados: 14
Autores: SALOMAO, A. N.; JOSE, S. C. B. R.; RODRIGUES, A. F. O.
Tipo: Folhetos
Palavras-chave: Fitormonios; Phytohormones; Dormência; Dormência da Semente; Nitrato de Potássio; Maracujá; Potassium nitrate; Passion fruits; Dormancy; Seed dormancy.
Ano: 2023
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1152417

Estudos de metodos para superar a dormencia de sementes de Piptadenia obliqua (Pers) Macbr, Pithecellobium parvifolium (Willd) Bentth e Cassia excelsa Schard.
Provedor de dados: 14
Autores: SOUZA, S. M. de; DRUMOND, M. A.; SILVA, H. D. da.
Essas causas podem ser resumidas em dois tipos básicos de dormência: fisiológica e física. Na dormência fisiológica, enquadram-se as causas referentes ao embrião' e endosperma, como imaturidade fisiológica e a existência de inibidores. A dormência física tem como principal exempIo a dormência tegumentar que pode ser devido ã impermeabilidade do tegumento, a água ou a gases.
Tipo: Parte de livro
Palavras-chave: Angico-de-bezerro; Arapiraca; Piptadenia obliqua; Pithecellobium paravifolium; Seed; Forest; Floresta; Canafístula; Cassia Excelsa; Dormência; Semente; Dormancy; Seeds; Forests.
Ano: 1980
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/133498

Brotação de gemas de macieiras 'Castel Gala' em função da temperatura durante o período hibernal.
Provedor de dados: 14
Autores: HAWERROTH, F. J.; HERTER, F. G.; PETRI, J. L.; MARAFON, A. C.
Tipo: Folhetos
Palavras-chave: Mallus domestica; Requerimento em frio; Ramos enxertados; Dominância apical; Grafted twigs; Dormência; Apical dominance; Chilling requirement; Dormancy.
Ano: 2013
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/982326

Tratamentos para superar a dormência de sementes de bandarra (Schizolobium amazonicum Huber ex Ducke).
Provedor de dados: 14
Autores: BIANCHETTI, A.; TEIXEIRA, C. A. D.; MARTINS, E. P.
Tipo: Folhetos
Palavras-chave: Bandarra; Dormência; Semente; Schizolobium Amazonicum; Dormancy; Seeds.
Ano: 1999
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/708648

Quebra da dormência da semente e enxertia em castanha-do-brasil.
Provedor de dados: 14
Autores: MÜLLER, C. H.
Tipo: Folhetos
Palavras-chave: Castanha-do-brasil; Enxertia; Brasil; Brazil nut; Seed; Grafting; Bertholletia Excelsa; Dormência; Germinação; Propagação Vegetativa; Semente; Germination; Dormancy; Vegetative propagation.
Ano: 1982
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/381176

Variabilidade na germinação e dormência de sementes em populações de Centrosema pubescens Benth.
Provedor de dados: 14
Autores: CRUZ, E. D.; CARVALHO, J. E. U. de; OLIVEIRA, R. P. de.
Publicação não convencional. Digitado.
Tipo: Folhetos
Palavras-chave: Feed legumes; Pruduction; Centrosema; Dormência da Semente; Germinação; Leguminosa Forrageira; Produção; Dormancy; Germination; Seeds.
Ano: 1993
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/376265

Quebra da dormência tegumentar de sementes de Sesbania virgata (Cav.) Pers.
Provedor de dados: 14
Autores: CARPANEZZI, A. A.; FOWLER, J. A. P.
Tipo: Folhetos
Palavras-chave: Sesbania virgata; Camabaí-amarelo; Propagação; Espécie nativa; Dormência; Semente; Dormancy; Seed trees.
Ano: 1997
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/290839

Germinação e dormência de sementes de Ageratum conyzoides L.
Provedor de dados: 14
Autores: IKEDA, F. S.; CARMONA, R.; MITJA, D.; GOMES, A. C.
Tipo: Folders
Palavras-chave: Planta daninha; Planta invasora; Dormência de semente; Ageratum Conyzoides; Germinação; Germination; Dormancy; Plant propagation; Weeds.
Ano: 2006
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/570139

Inibidores de Germinação no Fruto e em Sementes de Pequi (Caryocar brasiliense Camb.) .
Provedor de dados: 14
Autores: MELO, J. T. de; GONCALVES, A. N.
Tipo: Folhetos
Palavras-chave: Fruta nativa; Planta nativa; Indigenous organisms; Plant growth regulators; Caryocar Brasiliense; Cerrado; Dormência da Semente; Fruto; Germinação; Pequi; Regulador de Crescimento; Dormancy; Germination; Seeds.
Ano: 1991
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/547914

Avaliação de tratamentos para a quebra da dormência das sementes de araticum.
Provedor de dados: 14
Autores: PEREIRA, E. B. C.; PEREIRA, A. V.; MELO, J. T.; SOUSA-SILVA, J. C.; FALEIRO, F. G.
Tipo: Folders
Palavras-chave: GA; Ácido Giberélico; Annona Crassiflora; Araticum; Dormência da Semente; Germinação; Propagação Vegetativa; Semente; Germination; Dormancy; Plant propagation; Seeds.
Ano: 2004
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/568306

Superação da dormência e germinação de sementes de erva-mate (Ilex paraguariensis St. Hil.).
Provedor de dados: 14
Autores: MEDEIROS, A. C. de S.; NOGUEIRA, A. C.; AMAZONAS, M. A. L. de A.; GRIGOLETTI JUNIOR, A.; PEREIRA NETTO, A.; REICHER, F.; URBEN, A. F.
Tipo: Folhetos
Palavras-chave: Erva-mate; Dormência; Germinação; Ilex Paraguariensis; Semente; Dormancy; Germination; Seeds.
Ano: 1999
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/290823

Superação da dormência de sementes de malva (Urena lobata L.)
Provedor de dados: 14
Autores: FIGUEIREDO, F. J. C.; POPINIGIS, F.
Tipo: Folhetos
Palavras-chave: Mallow; Seed; Dormência; Germinação; Malva; Semente; Urena Lobata; Dormancy; Germination.
Ano: 1979
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/376649

Recomendações para produção de sementes de capim andropogon na região Meio-Norte.
Provedor de dados: 14
Autores: ITALIANO, E. C.; RAMOS, G. M.
Área para produção de sementes; Ponto ótimo de colheita; Métodos de colheita; Corte e empilhamento das panículas; Coleta das sementes; Secagem das sementes; Ensacamento e armazenamento; Teste de germinação; Dormência das sementes.
Tipo: Folhetos
Palavras-chave: Grass; Harvest; Germinbation; Andropogon Gayanus; Armazenamento; Capim Andropogon; Colheita; Dormência; Germinação; Secagem; Semente; Drying; Dormancy; Seeds; Storage.
Ano: 1999
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/57831

Genipa americana L.
Provedor de dados: 14
Autores: JOKER, D.; SALOMAO, A. N.
Tipo: Folders
Palavras-chave: Distribuição natural; Uso; Manipulação; Viabilidade; Genipa americana L; Natural distribution; Uses; Botanics; Fruit; Processing; Handling; Armazenamento; Botânica; Colheita; Dormência; Floração; Frutificação; Fruto; Germinação; Habitat; Processamento; Semeadura; Semente; Taxonomia; Dormancy; Flowering; Fruiting; Germination; Habitats; Harvesting; Seeds; Sowing; Storage; Taxonomy; Viability.
Ano: 2003
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1092807

Dormência em sementes de erva-mate (Ilex paraguariensis St. Hil.)
Provedor de dados: 14
Autores: MEDEIROS, A. C. de S.
Tipo: Folhetos
Palavras-chave: Erva mate; Propagação; Espécie nativa; Semente; Dormência; Ilex Paraguariensis; Dormancy.
Ano: 1998
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/290859

Quebra da dormência tegumentar de sementes de fedegoso.
Provedor de dados: 14
Autores: FOWLER, J. A. P.; CARPANEZZI, A. A.
Tipo: Folhetos
Palavras-chave: Propagação; Fedegoso; Espécie nativa; Semente; Dormência; Senna occidentalis; Dormancy; Seed trees.
Ano: 1997
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/290840

Diferenças entre o Pseudocereal Chenopodium quinoa Wild. e a planta daninha Chenopodium album L., Chenopodiaceae.
Provedor de dados: 14
Autores: SPEHAR, C. R.; SANTOS, R. L. B.; NASSER, L. C. B.
Tipo: Folhetos
Palavras-chave: Caracteristica agronomica; Chromosome; Adaptability; Cultivar; Yield; Caracteristica; Planta invasora; Cultura: Quinoa; Chenopodium Quinoa; Cerrado; Quinoa; Chenopodium album; Dormancy; Weeds.
Ano: 2001
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/564521

Tratamentos pré-germinativos na germinação de sementes de maracujás silvestres.
Provedor de dados: 14
Autores: JOSE, S. C. B. R.; SALOMAO, A. N.; MELO, C. C. de; CORDEIRO, I. de M.; GIMENES, M. A.
The crops of passion fruit in Brazil are established predominantly by seedlings obtained from seeds that generally have low and irregular germination and dormancy, what are problems for passion fruit producers. The objective of this research was to study pre-germination treatments to potentiate the germination of wild passion fruit species seeds which could be used by the seed producers or farmers. Passiflora alata Curtis and Passiflora setacea D.C. fruits were harvested when they were visually ripe. After aryl removaled, the seeds remained in environmental laboratory for surface drying to water contents of 8.5% and 10%, respectively. The treatments performed on the seeds were: immersion in water at 45 °C for 20 minutes; immersion Promalin® growth...
Tipo: Folhetos
Palavras-chave: Passiflora setacea; Qualidade fisiológica; Physiological quality; Dormência; Passiflora alata; Dormancy.
Ano: 2019
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1112254

Diapause in fruit fly parasitoids in the Recôncavo Baiano, Brazil
Provedor de dados: 82
Autores: Carvalho,Romulo da S.
Diapause has been poorly investigated in tephritid fruit flies and in associated parasitoids in tropical regions. In this work, diapause in larval-pupal parasitoids of fruit flies is reported for the region of the Reconcavo Baiano, Brazil. Diapause was recorded for individuals of four native species [Doryctobracon areolatus (Szépligeti), Utetes anastrephae (Viereck), Opius sp. (Hymenoptera: Braconidae), Aganaspis pelleranoi (Brethes) (Hymenoptera: Figitidae)] and of one exotic braconid [Diachasmimorpha longicaudata Ashmead]. Diapausing parasitoids were obtained from fruit fly puparia in fruits collected between November 1998 and April 2000. In all, 1.4% of individuals underwent diapause, being D. areolatus the most frequent. The development time for this...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biological control; Tephritidae; Braconidae; Figitidae; Dormancy.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2005000400012

Pearl Millet Variety ICMV 2
Provedor de dados: 30
Palavras-chave: Millets; Grain; Tropical zones; Crossing over; Dormancy; Yields; Tillage equipment; Diseases; Crops; Resources.
Ano: 1987
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3760

Groundnut Variety ALR 2
Provedor de dados: 30
Palavras-chave: Humus; Fungi; Germplasm; Breeds (animals); Summer; Dormancy; Diseases; Groundnuts; Tillage equipment; Yields.
Ano: 1997
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3880

Pearl Millet Variety SDMV 89004
Provedor de dados: 30
Palavras-chave: Millets; Grain; Humus; Breeds (animals); Rural development; Tropical zones; Dormancy; Tillage equipment; Selection; Seasons.
Ano: 1997
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3872

Groundnut Elite Germplasm ICGVs 86155, 86156, 86158, 87378, and 87921
Provedor de dados: 30
Palavras-chave: Viruses; Genotypes; Poultry equipment; Germplasm; Curing (processing); Wet season; Breeds (animals); Dormancy; Seasons; Proteins.
Ano: 1996
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3877

Seed dormancy and germination improvement treatments in fodder sorghum
Provedor de dados: 30
Autores: Shanmugavalli, M.
Palavras-chave: Seed treatment; Cytokinins; IAA; Inorganic acids; Dormancy; Soaking; Dry matter; Seed soaking; Sorghum; Sulphur.
Ano: 2007
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3306

Pearl Millet Variety ICMV 3
Provedor de dados: 30
Palavras-chave: Millets; Grain; Tropical zones; Dormancy; Yields; Tillage equipment; Diseases; Crops; Resources; Products.
Ano: 1987
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3762

Diagnosis of some wilt-like disorders of chickpea (Cicer arietinum L.)
Provedor de dados: 30
Autores: Y.L.
Palavras-chave: Fungi; Chickpeas; Rhizobium; Tropical zones; Diseases; Environmental factors; Dormancy; Stages; Crops; Harvesting.
Ano: 1978
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/4244

Pearl Millet Hybrid ICMH 451
Provedor de dados: 30
Palavras-chave: Animal fibres; Hybrids; Millets; Seed production; Grain; Self pollination; Breeds (animals); Yields; Dormancy; Tillage equipment.
Ano: 1988
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3777