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An evaluation of physical and mechanical scarification methods on seed germination of Vachellia macracantha (Humb. & Bonpl. ex Willd.) Seigler & Ebinger Acta Agron. (Palmira)
Maldonado-Arciniegas,Francisco; Rúales,Carlos; Caviedes,Mario; Ramírez,Darío X; León-Reyes,Antonio.
Abstract The dry Andean forests are ecosystems with a high diversity of flora and fauna and are at high risk of extinction due to the pressure of human activity. V. macracantha is a native species of the dry Andean forest, which has potential for reforestation and also provides benefits in agroforestry systems, due to its nitrogen fixation capacity, the supply of organic matter, the production of shade and wind protection. The multiplication of this species is limited due to the low percentage of seed germination, which present dormancy. The aim of this research was to determine the most effective scarification method for seeds germination of V. macracantha. Two types of methods were tested, the immersion in strong acids (chemical scarification), and the...
Tipo: Journal article Palavras-chave: Agroforestry; Agronomic traits; Inter-Andean dry forest; Plant development stages; Seed characteristics; Seed dormancy; Seed germinative capacity.
Ano: 2018 URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122018000100120
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Desiccation, postharvest maturity and seed aging of tall oat-grass PAB
Stanisavljević,Rade; Djokić,Dragoslav; Milenković,Jasmina; Terzić,Dragan; Djukanović,Lana; Stevović,Vladeta; Dodig,Dejan.
The objectives of this work were to determine whether and at which seed physiological maturity stage the diquat desiccant affects the tall oat-grass (Arrhenatherum elatius) seed quality and yield, as well as the proper storage period between harvest and sowing. Diquat desiccation was evaluated in applications during milk or dough seed maturation stages. Seeds conventionally produced and stored under traditional storage conditions were used for the analyses. Seed samples were drawn every 30th day after harvest (DAH). After the 240th DAH, samples were drawn every 90th day up the to 690th DAH. The highest yield were obtained by desiccation applied at the beginning of the seed dough stage, with a satisfactory seed quality. Both final germination and seedling...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Arrhenatherum elatius; Germination; Seed dormancy.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2010001100010
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Detection of QTLs for traits associated with pre-harvest sprouting resistance in bread wheat (Triticum aestivum L.) OAK
Cao, Liangzi; Hayashi, Kazuki; Tokui, Mayumi; Mori, Masahiko; Miura, Hideho; Onishi, Kazumitsu.
Pre-harvest sprouting (PHS) is one of the serious problems for wheat production, especially in rainy regions. Although seed dormancy is the most critical trait for PHS resistance, the control of heading time should also be considered to prevent seed maturation during unfavorable conditions. In addition, awning is known to enhance water absorption by the spike, causing PHS. In this study, we conducted QTL analysis for three PHS resistant related traits, seed dormancy, heading time and awn length, by using recombinant inbred lines from 'Zenkouji-komugi' (high PHS resistance) x 'Chinese Spring' (weak PHS resistance). QTLs for seed dormancy were detected on chromosomes 1B (QDor-1B) and 4A (QDor-4A), in addition to a QTL on chromosome 3A, which was recently...
Palavras-chave: Wheat; Pre-harvest sprouting; Seed dormancy; Heading time; Awn length.
Ano: 2016 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/4476
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Disturbance as a factor in breaking dormancy and enhancing invasiveness of African grasses in a Neotropical Savanna Acta Botanica
Gorgone-Barbosa,Elizabeth; Pivello,Vânia R.; Baeza,M. Jaime; Fidelis,Alessandra.
The Cerrado is threatened by wildfires and invasive species. We aimed to evaluate in laboratory conditions whether temperature fluctuation at the soil surface, resulting from the absence of vegetation due to fire, can affect the germination of Urochloa decumbens and U. brizantha, two invasive African grasses. Seeds of both species were submitted to simulations: 1) temperature during fire at 1cm belowground (F); 2) temperature fluctuation at 1cm belowground without vegetation cover for a month (TF); 3) (F) + (TF); 4) control at 25ºC. After treatments, seeds were put to germinate at 25ºC for 40 days. We had four replicates per treatment and three temporal replicates. We compared germination percentage and the mean germination time among treatments using...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cerrado; Fire; Germination percentage; Invasive species; Physiological dormancy; Seed dormancy; Temperature fluctuation; Urochloa brizantha; Urochloa decumbens.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062016000100131
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Effect of Scarification, Self-Inhibition, and Sowing Depth on Seed Germination of Lupinus campestris Chilean J. Agric. Res.
Gutiérrez Nava,Pedro; De León González,Fernando; Etchevers Barra,Jorge; Casas Fernández,Alejandro.
Lupinus campestris Schltdl. & Cham. grows in shallow fields and disturbed areas of Central Mexico. It has potential to improve soil fertility and as fodder. Seeds of L. campestris show dormancy, and the technology needed to increase its potential use requires information about conditions favouring seed germination. The aim of this study was to evaluate the seed germination responseof L. campestris under controlled (laboratory) and natural field conditions. Under laboratory conditions, 2 yr old seeds had a maximum germination percentage (50%) when they were scarified with sulphuric acid for 90 min prior to sowing and when laboratory light (0.5 µmol m-2 s-1) was maintained during the diurnal period. Without scarification, only about 3% of the seeds...
Tipo: Journal article Palavras-chave: Seed dormancy; Sowing depth; Green manure.
Ano: 2010 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392010000300003
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Effect of seed coat on the seed germination and seedling development of Calophyllum brasiliense Cambess. (Clusiaceae) Biological Sciences
Jesus, Valquíria Aparecida Mendes de; Braccini, Alessandro Lucca; Scapim, Carlos Alberto; Santos, Fábio Lúcio; Mariucci, Giovanna Emanuelle Goncalves; Suzukawa, Andréia Kazumi.
This work aimed to study the effect of the Calophyllum brasiliense seed coat on the seed germination process. To this end, three experiments were conducted in laboratory, greenhouse and screenhouse. From a total of six treatments, five are related to the seed coat (mechanical scarification; mechanical scarification followed by 2 hours in water, chemical scarification, hot water immersion and complete seed coat removal) and one control. Laboratory and greenhouse experiments were conducted in a completely randomized design (CRD). Screenhouse experiment was conducted in a completely randomized block design (RBD). We evaluated the total percentage, the speed index and the average time of germination or emergence. Data were subjected to analysis of variance and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: 2.01.00.00-0; 2.03.00.00-0 native species; Diaspore; Seed dormancy; Calophyllum brasiliense Biologia Geral; Botânica.
Ano: 2014 URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/21401
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Escarificação mecânica e reguladores vegetais para superação da dormência de sementes de Passiflora setacea D.C. Infoteca-e
COSTA, C. J.; SIMÕES, C. DE O.; COSTA, A. M..
2010
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) Palavras-chave: Maracujá; Passiflora setacea D.C.; Propagação; Germinação; Quebra de dormência; Passion fruit; Germination; Plant propagation; Wild passiflora; Breaking dormancy; Seed dormancy.
Ano: 2010 URL: http://www.infoteca.cnptia.embrapa.br/handle/doc/881945
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Espécies forrageiras e estabelecimento de pastagens na Amazônia. Infoteca-e
DIAS FILHO, M. B..
1987
Tipo: Documentos (INFOTECA-E) Palavras-chave: Pastagem; Leguminosa forrageira; Graminea; Desbravamento da floresta; Dormencia de semente; Densidade de semeadura; Adubacao; Brachiaria; Papicum maximum; Pueraria phaseoloides; Amazonia; Brasil; Pasture; Legume forage; Grass; Forest clearing; Seed dormancy; Seeding rate; Fertilization.
Ano: 1987 URL: http://www.infoteca.cnptia.embrapa.br/handle/doc/383729
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Estudos preliminares sobre a germinação de Passiflora nitida. Infoteca-e
ANDRADE, S. R. M. de; ROSA, S. D.; ARAÚJO, C. S. de; FALEIRO, F. G.; JUNQUEIRA, N. T. V..
2010
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) Palavras-chave: Germinação; Passiflora nitida; Quebra de dormência; Maracujá suspiro; Maracujá silvestre; Passion fruit; Germination; Wild passiflora; Breaking dormancy; Seed dormancy.
Ano: 2010 URL: http://www.infoteca.cnptia.embrapa.br/handle/doc/883255
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Evolution of Ryegrass Seed Banks Depending on Soil Tillage and Crops Planta Daninha
Galvan,J.; Rizzardi,M.A.; Peruzzo,S.T.; Ovejero,R.F..
The seed bank is characterized by the amount of seeds and other viable reproductive structures in the soil and it is changed by the input and output of seeds, being classified by its permanence in the soil as transient or permanent. The tillage and crops used decisively influence this dynamic and more disturbed areas tend to have richer seed banks. The purpose of this study was to test different soil tillage and crop systems, aiming to reduce or eliminate the ryegrass in the area. The experiment was conducted from 2010 to 2012. In the first year, the effect of chemical tillage was assessed, compared to the area without tillage. From the second year on, in the area that received chemical tillage, the second experiment was installed, where it was assessed...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Seed dormancy; Chiseling; Seeds viability; Weeds.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582015000200183
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Genome-wide association study of pre-harvest sprouting resistance in Chinese wheat founder parents Genet. Mol. Biol.
Lin,Yu; Liu,Shihang; Liu,Yaxi; Liu,Yujiao; Chen,Guoyue; Xu,Jie; Deng,Mei; Jiang,Qiantao; Wei,Yuming; Lu,Yanli; Zheng,Youliang.
Abstract Pre-harvest sprouting (PHS) is a major abiotic factor affecting grain weight and quality, and is caused by an early break in seed dormancy. Association mapping (AM) is used to detect correlations between phenotypes and genotypes based on linkage disequilibrium (LD) in wheat breeding programs. We evaluated seed dormancy in 80 Chinese wheat founder parents in five environments and performed a genome-wide association study using 6,057 markers, including 93 simple sequence repeat (SSR), 1,472 diversity array technology (DArT), and 4,492 single nucleotide polymorphism (SNP) markers. The general linear model (GLM) and the mixed linear model (MLM) were used in this study, and two significant markers (tPt-7980 and wPt-6457) were identified. Both markers...
Tipo: Info:eu-repo/semantics/article Palavras-chave: General linear model; Linkage disequilibrium; Marker-trait associations; Mixed linear model; Seed dormancy.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572017000400620
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Germination of native grasses with potential application in the recovery of degraded areas in Quadrilátero Ferrífero, Brazil Biota Neotropica
Figueiredo,Maurílio Assis; Baêta,Hudson Eustáquio; Kozovits,Alessandra Rodrigues.
Native grasses are potential species to be used in land rehabilitation. However, due to the lack of better knowledge of their performance, preference is given to exotic plants, which may be invasive and negatively affect the local biodiversity. In order to better understand the propagation of native species of the Quadrilátero Ferrífero (Minas Gerais, Brazil) using their seeds, and in so doing, indicate possible candidates for land rehabilitation, this study investigated the germination patterns of the following grasses: Andropogon bicornis L.; Andropogon leucostachyus Kunth; Setaria parviflora (Poir.) Kerguélen; Cenchrus brownii Roem. & Schult; Echinolaena inflexa (Poir.) Chase, and Apochloa euprepes (Renvoize) Zuloaga & Morrone. The...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Poaceae; Seed dormancy; Storage time; Heating; Potassium nitrate; Caryopsis.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032012000300013
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Inheritance of seed dormancy in rice (Oryza sativa L.) International Rice Research Institute
Das, Tulsi.
xi, 111 leaves : ill. Thesis (Ph.D.) -- University of Dhaka
Tipo: Thesis Palavras-chave: Rice; Seed dormancy; Inheritance (genetics); Variety trials; Bangladesh.
Ano: 1989 URL: http://hdl.handle.net/123456789/1160
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Propagation of Annonaceous plants Rev. Bras. Frutic.
Ferreira,Gisela; De-La-Cruz-Chacón,Iván; Boaro,Carmen Silvia Fernandes; Baron,Daniel; Lemos,Eurico Eduardo Pinto de.
Abstract This review aims to present advances in studies on the propagation of the Annonaceae species, which includes species of economic importance such as: soursop, custard apple, atemoya and cherimoya. In sexual propagation, advances are mainly related to a better understanding of the stages of seed development, dormancy mechanisms, and germination. In asexual propagation, compatibility studies between grafts and rootstocks are presented, focusing on the expression of genes involved in tissue formation. The cutting method is also discussed, which is another option for the propagation for this group of plants considered difficult to root, approaching endogenous and exogenous factors related to the subject, as well as management strategies that affect...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Annonaceae; Seed dormancy; Germination; Grafting; Cutting.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452019000104002
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Protocolos de superação de dormência física e condicionamento de sementes de bocaiuva para pequenos produtores. Infoteca-e
URBANETZ, C.; JORGE, M. H. A.; MARCONCINI, J. M.; GALVANI, F..
Esse trabalho descreve duas metodologias, uma para extração de sementes de bocaiuva de dentro do coquinho (pirênio) para obtenção de sementes sem injúrias mecânicas e outra para extração da casca da parte da cicatriz da semente e condicionamento para facilitar as trocas gasosas durante o tempo de germinação das sementes. Ambas são para ajudar a contornar o problema de dormência física das sementes da espécie que dificulta a produção de mudas. As duas metodologias, descritas na forma de protocolos, são simples, mas eficientes e aplicáveis para pequenos e médios produtores. Esperamos que essas metodologias facilitem o processo de produção de mudas de bocaiuva, de modo que possam ser usadas em sistemas de plantio visando a exploração racional e sustentável da...
Tipo: Documentos (INFOTECA-E) Palavras-chave: Bocaiuva; Acrocomia aculeata; Semente; Dormência da semente; Acrocomia aculeata; Seeds; Seed dormancy.
Ano: 2016 URL: http://www.infoteca.cnptia.embrapa.br/handle/doc/1065090
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Seed dormancy and developmental pattern in Commelina benghalensis L. International Rice Research Institute
Kim, Sang Yeol.
97 l. : ill. Thesis (M.S.) -- University of the Philippines at Los Baños
Tipo: Thesis Palavras-chave: Rice; Weeds; Commelina benghalensis; Seed dormancy; Plant physiology.
Ano: 1988 URL: http://hdl.handle.net/123456789/1216
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Seed dormancy release and germination characteristics of Corispermum lehmannianum Bunge, an endemic species in the Gurbantunggut desert of China Phyton
Zhang,LW; Liu,HL; Zhang,DY; Bian,WG.
Seed dormancy release and germination of Corispermum lehmannianum Bunge were tested using various treatments: temperature, cold stratification, gibberelins (GA3), dry storage and sand burial. Results showed that temperature and light did not affect the germination of fresh seeds, cold stratification and GA3 could improve seed germination, whereas dry storage and sand burial did not. The germination percentage was highest at 35/20 °C after the cold stratification and GA3 treatments. Corispermum lehmannianum seeds were classified as non-deep, Type-2, physiological dormancy (PD), whose seed dormancy could be released by cold stratification and GA3.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Seed germination; Seed dormancy; Gurbantunggut desert.
Ano: 2015 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572015000100009
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Seed germination and seedling vigour of italian ryegrass, cocksfoot and timothy following harvest and storage Ciência e Agrotecnologia
Stanisavljevic,Rade; Ðjokic,Dragoslav; Milenkovic,Jasmina; Ðukanovic,Lana; Stevovic,Vladeta; Simic,Aleksandar; Dodig,Dejan.
During post-harvest maturation, different species vary in the length of dormancy breaking or germination increases. Seed dormancy and slow seedling development often limit establishment of forage grass stands. Seed germination and seedling vigour of Italian ryegrass (Lolium italicum A. Braun, Synonym Lolium multiflorum L.), cocksfoot (Dactylis glomerata L.) and timothy (Phleum pretense L.) were observed after harvest and storage. After harvest in June, seeds were stored under standard storage conditions and sampled every 30 days after harvest (DAH), up to 270 DAH, and then every 60 days up to 990 DAH. At each date, seeds were tested for final germination percentage and for seedling vigour traits. Timothy seeds had a maximum germination (88%) and the best...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Forage grasses; Post-harvest maturation; Seed dormancy.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542011000600014
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Seed germination of three species of Fabaceae typical of seasonally dry forest PFB - Pesquisa Florestal Brasileira
Arruda, Daniel Meira; Brandão, Diego Oliveira; Veloso, Maria das Dores Magalhães; Nunes, Yule Roberta Ferreira.
This study evaluates seeds germination of Anadenanthera colubrina, Acacia polyphylla and Bauhinia cheilantha, typical species of deciduous forests. Seeds were submitted to pre-germination treatments and attack of native insects. The seeds of each species were grouped in: seeds scarified with sandpaper; seeds immersed in water heated to 70 °C, seeds with signs of attack by herbivore insects and the control group. The largest proportion of germinated seeds occurred in the first week of incubation and germination peak, ranged from first to third day. All groups of A. polyphylla and B.cheilantha showed high germination rate (> 90%), being reduced only when seeds were attacked by insects (< 25%). Mechanic scarification was efficient in A. polyphylla by...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Seed dormancy; Deciduous forest; Tropical dry forest; Seed predation; Propagation; Restoration Recursos Florestais Dormência de sementes; Floresta decídua; Mata seca; Predação de sementes; Propagação; Restauração.
Ano: 2015 URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/672
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Seed longevity of red rice ecotypes buried in soil Planta Daninha
Noldin,J.A.; Chandler,J.M.; McCauley,G.N..
Red rice is a troublesome weed in irrigated rice production and is spread through contaminated commercial rice seed and machinery. Seed dormancy is a major trait for red rice. Studies were carried out at two locations to determine red rice seed longevity in the soil of several ecotypes from four US states. Five months after burial near Beaumont, Texas only three ecotypes had viable seed (<1%) when buried at 5 cm, but 9 ecotypes had viable seed after two years when buried at 25 cm. At the thirty-sixth month after burial, ecotypes Arkansas 2, Louisiana 2 and 4, Mississippi 4 and Texas 1 had viable seeds, but at less than 1%. Freshly harvested red rice seeds buried at 12 cm near College Station, TX, survived longer than seeds placed on the soil surface....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Red rice; Oryza sativa; Rice; Seed survival; Seed dormancy; Strawhull ecotypes; Blackhull ecotypes.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582006000400001
Registros recuperados: 24
Primeira ... 12 ... Última
 

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