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Registros recuperados: 21
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AM3- an induced rice mutant with improved grain size and yield International Rice Research Institute
Bhat, R. S.; Surendra, P.; Hanumaratti, N. G.; Nayak, G. V.; Dushyanthakumar, B. M.; Shadakshari, Y. G..
p.18-19
Palavras-chave: Varieties; Abhilash (variety); Mutants; Seed size; Yields; Flowering; Plant height; India.
Ano: 2007 URL: http://www.irri.org/publications/irrn/pdfs/vol32no1/Genetics.pdf
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Association between biometric characteristics of tomato seeds and seedling growth and development Electron. J. Biotechnol.
Peñaloza,Patricia; Durán,José María.
Background The size and weight of tomato seeds depend on genetics and can be modified by environment and management. In some species, a strong relation has been described between physical aspects of the seeds and the quality of the corresponding seedlings, but this cannot be considered a general rule. The objective of this research was to identify any association between the biometric characteristics of tomato seeds and the growth and development of their seedlings. Results A total of 18 lots of hybrid tomato seeds were used (from indeterminate plants with round fruits), belonging to six varieties from two reproduction seasons. Each lot was evaluated for seed size and weight, and seed quality, in terms of the germination test (5 and 14 d after sowing). The...
Tipo: Journal article Palavras-chave: Seed size; Seed weight; Seedling emergence; Seedling length; Seedlings dry weight; Solanum lycopersicum L.
Ano: 2015 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582015000400002
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Big coffee VL: seed desiccation tolerance, sieve classification, and physiological quality. Repositório Alice
SOUZA, A. C. de; ROSA, S. D. V. F. da; VILELA, A. L.; FIGUEIREDO, M. A. de; VILELA, A. L. de O.; STÉPHANO FILHO, R.; CARVALHO, M. A. de F..
A coffee plant producing large fruit, seeds, and leaves in relation to conventional coffee plants, possibly generated by genetic mutation, was named Big Coffee VL. Seeds of this coffee plant were classified by size and used to establish the crop, whose progenies were designated as Big Coffee VL. large, Big Coffee VL. medium, and Big Coffee VL. small. The aim in this study was to investigate desiccation tolerance, together with size classification, and evaluate the physiological quality of the seeds of this progeny. Seeds of each type of Big Coffee VL. and of the cultivar Topázio were collected. High moisture seeds and seeds dried to 11% moisture content were evaluated to assess desiccation tolerance. Dried seeds of each Big Coffee VL. progeny and of the...
Tipo: Artigo de periódico Palavras-chave: Seed size; Germination test; Particle size analysis sieves; Tamanho da semente; Teste de germinação; Peneiras de análise granulométrica; Coffea Arábica; Vigor.
Ano: 2018 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1108914
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Biomasa acumulada e intercambio gaseoso en maíz proveniente de semilla de diferente tamaño bajo humedad favorable y restringida: (con 3 tablas) Phyton
López-Santillán,José Alberto; Castro-Nava,Sergio; Trejo-López,Carlos; Mendoza-Castillo,Ma. Del Carmen; Ortiz-Cereceres,Joaquín.
Se evaluó la velocidad de germinación y el crecimiento de plántulas de maíz provenientes de semilla de dos diferentes tamaños para determinarlas diferencias en la producción de biomasa durante la etapa vegetativa y estimar los efectos de una condición diferente de disponibilidad de humedad sobre el estatus fisiológico de la plántula. Una mayor cantidad de biomasa en el endospermo y en el embrión de las semillas permitió una mayor disponibilidad de reservas durante la etapa posterior a la germinación y anterior a la emergencia, dando como resultado un mayor vigor inicial en las plántulas evaluadas, y en consecuencia una mayor acumulación de biomasa, tanto radical como aérea, durante la etapa vegetativa. La presencia de una restricción de humedad durante la...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Maize; Seed size; Seedling vigor; Biomass; Drought; Gas exchange.
Ano: 2004 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572004000100030
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Crop size influences pre-dispersal seed predation in the Brazilian Cerrado Acta Botanica
Christianini,Alexander V..
ABSTRACT Many pre-dispersal seed predators are specialized insects that rely on seeds for larval development. These insects may respond to the amount of seeds produced by a plant (i.e. crop size), increasing the proportion of seeds damaged with increases in seed numbers. Large seeds have more resources and spend more time in plants to complete their development and are probably more prone to be preyed on by those insects than small seeds. Here I tested how crop size and seed mass influence pre-dispersal seed predation in plants from the Cerrado savannas of Brazil. I related plant crop size to pre-dispersal seed predation for Xylopia aromatica and Erythroxylum pelleterianum. A literature review was performed to test if seed mass may explain among-species...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Brazil; Crop size; Erythroxylum pelleterianum; Savanna; Seed number; Seed predation; Seed size; Seed survival; Xylopia aromatica.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062018000100135
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Efeito de diferentes tamanhos de sementes na germinacao e no vigor de plantulas de acacia (Acacia senegal (L.) Willd.) - Fabaceae-Mimosoideae. Repositório Alice
FERREIRA, M. G. R.; TORRES, S. B..
Foram estudados diferentes tamanhos de sementes na germinacao e vigor de plantulas de Acacia senegal. As sementes empregadas foram classificadas por diferencas de tamanho com a utilizacao de uma serie de peneiras de crivos circulares (malha 14, 15, 16, 17, 18, 19 e 20) e, a seguir, determinaram-se os pesos dos materiais retidos em cada peneira. O ensaio foi conduzido em caixas plasticas do tipo gerbox (11x11x4cm), tendo como substrato papel mata-borrao, umedecido com agua destilada a temperatura de 22oC e luz constante. Os parametros avaliados foram germinacao e vigor (comprimento medio das plantulas, comprimento medio da radicula, comprimento medio do hipocotilo, peso verde medio da plantula, peso verde medio da radicula e peso verde medio do hipocotilo)....
Tipo: Artigo de periódico Palavras-chave: Acacia senegal; Seed longevity; Seed size; Acácia; Germinação; Plântula; Semente; Tamanho; Teste de Vigor; Germination; Seedlings.
Ano: 1997 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/132062
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Efeito do tamanho da semente, do substrato e pré-tratamento na germinação de sementes de pupunha. Repositório Alice
LEDO, A. da S.; MEDEIROS FILHO, S.; LEDO, F. J. da S.; ARAÚJO, E. C..
A germinação lenta e uniforme de sementes de pupunha (Bactris gasipaes Kunth) acarreta problemas na propagação dessa espécie, dificultando principalmente a produção de mudas em escala comercial. Esse trabalho objetivou determinar o efeito do tamanho da semente, de substrato e de pré-tratamentos na germinação de sementes de pupunha. As sementes foram submetidas aos tratamentos: substratos (areia de textura média e vermiculita), pré-tratamentos (imersão em ácido sulfúrico 98% por quatro minutos; imersão em água à temperatura ambiente (28°C) por 48 horas; remoção do endocarpo e testemunha; e tamanho de sementes (pequena, média e grande). Os tratamentos foram comparados quanto a percentagem de germinação avaliada aos 85 dias após a semeadura e índice de...
Tipo: Artigo de periódico Palavras-chave: Tamanho da semente; Seed size; Tamaño de la semilla; Substrato; Germinación de las semillas; Propagación vegetativa; Tratamiento de semillas.; Propagação vegetativa; Pupunha; Bactris gasipaes; Germinação; Tratamento de semente; Vegetative propagation; Seed germination; Seed treatment..
Ano: 2002 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/508870
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Genetic gains in physic nut using selection indexes PAB
Bhering,Leonardo Lopes; Laviola,Bruno Galvêas; Salgado,Caio Césio; Sanchez,Carlos Felipe Barrera; Rosado,Tatiana Barbosa; Alves,Alexandre Alonso.
The objective of this work was to estimate genetic gains in physic nut (Jatropha curcas) using selection indexes and to establish the best selection strategy for the species. Direct and indirect selection was carried out using different selection indexes, totalizing 14 strategies. One hundred and seventy five families from the active germplasm bank of Embrapa Agroenergy, Brasília, Brazil, were analyzed in a randomized complete block design with two replicates. The evaluated traits were: grain yield; seeds per fruit; endosperm/seed ratio; seed weight, length, width, and thickness; branches per plant at 0.5, 1.0, and 1.5 m; plant height; stem diameter; canopy projection on rows and between lines; canopy volume; juvenility (days to the first flowering); and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Jatropha curcas; Biodiesel; Canopy volume; Cerrado; Juvenility; Seed size.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2012000300012
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How does seed size of Arachis pintoi affect establishment, top-growth and seed production? Repositório Alice
ASSIS, G. M. L. de; MIQUELONI, D. P.; AZÊVEDO, H. S. F. S.; VALENTIM, J. F..
The adoption of Arachis pintoi in mixed pastures in the humid tropics remains limited to specific success cases, mainly because of high seed cost. The search for methods to reduce these costs is a key challenge towards promoting wider adoption of this legume in livestock production systems in the tropics. One possible option is to select for smaller seeds, which would allow lower sowing rates, while ensuring similar plant numbers. Alternatively, high seed production costs could be offset by utilizing forage from seed production fields for hay or silage prior to seed harvest. This study evaluated the effects of seed size on crop performance of A. pintoi cv. BRS Mandobi in a tropical forage + seed production system, plus the effects of harvesting forage...
Tipo: Artigo de periódico Palavras-chave: Amendoim forrageiro; Forage peanut; Cacahuetes forrajeros; Pastoreo mixto; Leguminosas forrajeras; Producción de plántulas; Seed size; Tamaño de las semillas; Arachis pintoi cv Mandobi; Embrapa Acre; Rio Branco (AC); Acre; Amazônia Ocidental; Western Amazon; Amazonia Occidental; Pastagem Consorciada; Leguminosa Forrageira; Características Agronômicas; Semente; Produção; Qualidade; Tamanho; Campo Experimental; Mixed grazing; Forage legumes; Agronomic traits; Seedling production.
Ano: 2018 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1097056
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Influence of seed size and ecological factors on the germination and emergence of field bindweed (Convolvulus arvensis) Planta Daninha
Tanveer,A; Tasneem,M; Khaliq,A; Javaid,M.M; Chaudhry,M.N.
An understanding of seed germination ecology of weeds can assist in predicting their potential distribution and developing effective management strategies. Influence of environmental factors and seed size on germination and seedling emergence of Convolvulus arvensis (field bindweed) was studied in laboratory and greenhouse conditions. Germination occurred over a wide range of constant temperatures, between 15 and 40 ºC, with optimum germination between 20 and 25 ºC. Time to start germination, time to 50% germination and mean germination time increased while germination percentage and germination index decreased with an increase in temperature from 20 ºC, salinity and osmotic stress. However, germination was tolerant to low salt (25 mM) or osmotic stress...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Germination ecology; Seed size; Field bindweed; Convolvulus arvensis.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582013000100005
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Path analysis under multicollinearity in soybean BABT
Bizeti,Henrique Stoco; Carvalho,Claudio Guilherme Portela de; Souza,José Roberto Pinto de; Destro,Deonisio.
This study aimed to establish the phenotypic correlations among several soybean traits with grain yield in direct and indirect effects using path analysis, and to compare alternative methods for minimizing the adverse effects of multicollinearity in estimating path coefficients. The experiment was conducted in greenhouse in a randomized complete block design with four replications. Nine soybean genotypes belonging to three seed size categories were used. The correlation studies and the path analysis showed that the seed size was not important for increased yield. The number of nodes and plant height at maturity showed significant correlation with grain yield. Using the least square methodology, the results obtained by path analysis under multicollinearity...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Genetic breeding; Glycine max; Grain yield; Seed size; Root and canopy traits.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132004000500001
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Preliminar evaluation of performance in topcrosses between vegetable type and grain type soybean. Repositório Alice
YOKOMIZO, G. K. I.; VELLO, N. A.; NEKASTCHALOW, M. C..
A soja hortaliça, com sabor agradável, sementes grandes, destinada ao consumo humano direto, apresenta sementes com baixa qualidade fisiológica e alta sensibilidade ao fotoperíodo, sendo que para corrigir estes problemas foram realizados topocruzamentos entre soja tipo alimento com dois tipo grão adaptados, procurando associar características adequadas para alimento humano com adaptabilidade. As conclusões obtidas para estes topocruzamentos foram: a) Os melhores topocruzamentos para tipo hortaliça foram obtidos predominantemente com ´FT-2` e para produtividade de grãos com ´Doko`; b) Os topocruzamentos avaliados apresentaram alta sensibilidade as condições de inverno em comparação as de verão, com isto o processo de seleção no inverno deve ser evitado; c)...
Tipo: Separatas Palavras-chave: Seed size; Vegetal breeding; Vegetal germplasm.; Glycine Max..
Ano: 2000 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/345413
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Preliminar evaluation of performance in topcrosses between vegetable type and grain type soybean BABT
Yokomizo,Gilberto K.; Vello,Natal A.; Nekastchalow,Marcos C..
Studies were conducted to evaluate the performance of topcrosses between food type soybean (with tendency to low physiological quality of the seeds) with two adapted grain type, seeking to associate adequate human food characteristics with adaptability. The conclusions were: a) The best topcrosses for vegetable type soybean were obtained predominantly with ´FT-2` and for seed yield with ´Doko`; b) The evaluated topcrosses presented high sensibility to winter conditions in comparison to summer, consequently the selection process in the winter it must be avoided; c) The selection for food type soybean it must be established in adequate values between individual plant yield and one hundred seed weight.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Glycine max; Seed size; Vegetal breeding; Vegetal germplasm.
Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132000000300004
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Relationships among oil content, protein content and seed size in soybeans BABT
Marega Filho,Mario; Destro,Deonisio; Miranda,Lilian Azevedo; Spinosa,Wilma Aparecida; Carrão-Panizzi,Mercedes Concórdia; Montalván,Ricardo.
During 1995/96 and 1996/97, experiments were carried out at Londrina State University, aiming at quantifying the oil and protein contents in two groups of soybean genotypes; estimating the phenotypic, genotypic and environmental correlations existent among oil, protein content and seed size, and identifying genotypes for direct human consumption with high protein content. The evaluated characters were Weight of a Hundred Seeds (WHS), expressed in grams/100 seeds, Oil Content (OC) and Protein Content (PC), expressed in %. In the experiment carried out in the field, OC ranged from 12 to 20.37 % and PC from 35.66 to 41.75% while in the experiment carried out in the greenhouse OC ranged from 12.26 to 21.79 % and PC from 32.95 to 41.56 % . The correlations...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Soybean; Glycine max; Seed composition; Seed size; Oil content; Protein content.
Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132001000100004
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Resprouting ability and intensity after damage in seedlings of the large-seeded species Araucaria angustifolia Braz. J. Plant Physiol.
Alabarce,Fernanda da Silva; Dillenburg,Lucia Rebello.
The role of seed reserves on the ability to resprout and on the responses of resprouting in Araucaria angustifoliawas investigated. Seedlings were separated into three groups: plants which had their shoot damaged, a similar group in which damaged plants had their connection to the supporting seed removed, and a control group. All damaged seedlings resprouted, but those which remained connected to their seeds had a greater mass of resprouted shoots than the ones disconnected from their seeds. A greater accumulation of seed mass in the underground hypocotyl was a very distinct initial response to damage, but, on the long run, damaged plants were able to reestablish a biomass allocation pattern, which was very similar to the control plants. These results...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Brazilian pine; Herbivory; Resource allocation; Seed size; Storage.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202012000200006
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Seed weight variation of wyoming sagebrush in Northern Nevada Biocell
Busso,Carlos A.; Perryman,Barry L..
Seed size is a crucial plant trait that may potentially affect not only immediate seedling success but also the subsequent generation. We examined variation in seed weight of Wyoming sagebrush (Artemisia tridentata ssp. wyomingensis Beetle and Young), an excellent candidate species for rangeland restoration. The working hypothesis was that a major fraction of spatial and temporal variability in seed size (weight) of Wyoming sagebrush could be explained by variations in mean monthly temperatures and precipitation. Seed collection was conducted at Battle Mountain and Eden Valley sites in northern Nevada, USA, during November of 2002 and 2003. Frequency distributions of seed weight varied from leptokurtic to platykurtic, and from symmetry to skewness to the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Artemisia tridentata ssp. wyomingensis; Climate effects; Rangeland restoration; Seed size.
Ano: 2005 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-95452005000300005
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Sorghum breeding Thai Agricultural
Wasana Wongyai; Krisda Samphantharak; Thamrongsilpa Pothisoong; Chaba Jampatong.
5 ill., 7 tables
Palavras-chave: Sorghum; Breeding; Sorghum population; Seed color; Seed size; Aluminum toxiccity; Shootfly resistant; ข้าวฟ่าง; การปรับปรุงพันธุ์; การปรับปรุงประชากร; สีเมล็ด; หนอนแมลงวันเจาะยอด; พันธุ์ทนทานต่ออลูมินั่ม.
Ano: 1987 URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4242
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The role of historical and ecological factors on initial survival of Copaifera langsdorffii Desf. (Fabaceae) Acta Botanica
Fagundes,Marcílio; Costa,Fernanda Vieira da; Antunes,Suélen Ferreira; Maia,Maria Luiza Bicalho; Queiroz,Antônio César Medeiros de; Oliveira,Leonardo Queiroz; Faria,Maurício Lopes de.
The plant population dynamic is affected by ecological and evolutionary processes that operate at all stages of the plant life cycle. The aim of this study was to characterize the seed and seedling performance of Copaifera langsdorffii by testing four hypotheses: the resource concentration hypothesis; the relationship between seed size and germinability hypothesis; the relationship between seed size and seedling vigor hypothesis; and the intraspecific seedling competition hypothesis. All seeds used in the experiments were collected from 35 C. langsdorffii plants located in a fragment of the Brazilian cerrado (savanna). The number of fruits per plant negatively affected Rhinochenus brevicollis attacks on C. langsdorffii seeds. Therefore, this result does...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Plant competition; Predation; Rhinochenus brevicollis; Seed size; Seedling development.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000400005
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การศึกษาขนาดของเมล็ดพันธุ์ข้าวโพดหวานอินทรี 2 ที่มีผลต่อการเจริญเติบโตและคุณภาพของฝักสดในฤดูปลูกที่แตกต่างกัน Thai Agricultural
Thomya Thongluang; Supranee Ngamprasitthi; Thamrongsilpa Pothisoong; Surapol Chowchong; Sangkhae Nawanich.
4 tables
Palavras-chave: Corn; Maize; Seed size; Hybrids; Insee 2; Growth; Quality; Fresh ear yield; ข้าวโพด; ข้าวโพดหวาน; ขนาดเมล็ดพันธุ์; การเจริญเติบโต; ผลผลิต; คุณภาพ; ฤดูปลูก; ชุดดินปากช่อง.
Ano: 2003 URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4556
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ผลของการพอกเมล็ดพันธุ์ข้าวโพดไร่ขนาดเล็ก ด้วยฟอสฟอรัสและโพแทสเซียม ที่มีต่อคุณภาพเมล็ดพันธุ์ การเจริญเติบโตของต้นกล้า และผลผลิต Thai Agricultural
Nongnuch Saenghin; Boonmee Siri.
The objectives of this research were to investigate effects of seed pelleting of small corn seed with phosphorus and potassium on seed quality and seedling growth. The experiment was conducted in Complete Randomized Design (CRD) at Seed Quality Test Laboratory of Seed Processing Plant, Faculty of Agriculture, Khon Kaen University. The SPP033 hybrid corn was used for 4 replications and 6 treatments. T1) large-seed (unpelleting: size 20/64 in diameter screen) T2) small-seed (unpelleting: size 14/64 in diameter screen) T3) small seed pelleted with bentonite and charcoal and Hydroxylpropyl methylcellulose (HPMC) (P1) T4) small seed pelleted with P1 and phosphorus 0.070 mg. and potassium 0.644 mg./1 kg. of seed T5) small seed pelleted with P1 and phosphorus...
Tipo: PhysicalObject Palavras-chave: Corn seed; Seed pelleting; Fertilization; Phosphorus; Potassium; Seed qaulity; Yield; Maize; Seedling growth; Seed size; Seed longevity; เมล็ดพันธุ์ข้าวโพด; การพอกเมล็ดพันธุ์; ธาตุอาหารพืช; ฟอสฟอรัส; โพแทสเซียม; การเก็บรักษาเมล็ดพันธุ์; เทคโนโลยีเมล็ดพันธุ์; คุณภาพเมล็ดพันธุุ์; ผลผลิต; อัตราการงอกของเมล็ด; ความแข็งแรงของเมล็ด; ต้นกล้า; การเจริญเติบโต.
Ano: 2014 URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5721
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