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Registro Completo |
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Biblioteca(s): |
Embrapa Gado de Corte. |
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Data corrente: |
16/04/1997 |
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Data da última atualização: |
05/06/2007 |
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Autoria: |
HOPKINSON, J. M.; SOUZA, F. H. D. de; DIULGHEROFF, S.; ORTIZ, A.; SANCHEZ, M. |
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Título: |
Reproductive physiology, seed production and seed quality of Brachiaria. |
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Ano de publicação: |
1996 |
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Fonte/Imprenta: |
In: MILES, J.W.; MAASS, B.L.; VALLE, C.B. do, ed. Brachiaria: biology, agronomy and improvement. Cali: CIAT / Brasilia: EMBRAPA-CNPGC, 1996. |
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Páginas: |
p.124-140. |
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Série: |
(CIAT Publication, 259). |
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ISBN: |
958-9439-57-8 |
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Idioma: |
Inglês |
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Notas: |
CNPGC. |
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Conteúdo: |
Seed of six commercial Brachiaria species is extensively produced for pasture sowing. Production is restricted geographically and seasonally by photoperiodic flowering reactions. It also requires a prior control of vegetative toller production, and therefore a reliable dry season. The necessary conditions are, most readily found at high tropical latitudes. Seed crop management is mostly conventinal. Vigorous synchronized tillering is stimulated by decapitation and use of nitrigenous fertilizer at times when rainfall, temperature, and sunshine are expected to favor unrestricted development. Ripe seed sheds readily and, coupled with imperfect synchronization of crop ripening, tends to make conventional direct harvesting inefficient and its timing critical. Where possible, seeds are let to fall and acumulate, and then recovered. Seed yields range from more than 1,000 kg/ha of pure seed to less than 100 kg/ha. Seed quality is heavily influenced by vitality and dormancy. Vitality depends mostly on maturity of seed harvest, being higher in accumulated fallen seed and much lower in directly severed seed. Dormancy is stringly developed in the genus and persists in most taxa at least into the season after harvest. This created problems for germination testing and in the field use of fresh seed. Breaching the husk, most commonly by sulfuric acid, provides of partial solution.Suggestions are offered for improving seed production when developing new cultivars, particulary for compatible with production at low latitude. MenosSeed of six commercial Brachiaria species is extensively produced for pasture sowing. Production is restricted geographically and seasonally by photoperiodic flowering reactions. It also requires a prior control of vegetative toller production, and therefore a reliable dry season. The necessary conditions are, most readily found at high tropical latitudes. Seed crop management is mostly conventinal. Vigorous synchronized tillering is stimulated by decapitation and use of nitrigenous fertilizer at times when rainfall, temperature, and sunshine are expected to favor unrestricted development. Ripe seed sheds readily and, coupled with imperfect synchronization of crop ripening, tends to make conventional direct harvesting inefficient and its timing critical. Where possible, seeds are let to fall and acumulate, and then recovered. Seed yields range from more than 1,000 kg/ha of pure seed to less than 100 kg/ha. Seed quality is heavily influenced by vitality and dormancy. Vitality depends mostly on maturity of seed harvest, being higher in accumulated fallen seed and much lower in directly severed seed. Dormancy is stringly developed in the genus and persists in most taxa at least into the season after harvest. This created problems for germination testing and in the field use of fresh seed. Breaching the husk, most commonly by sulfuric acid, provides of partial solution.Suggestions are offered for improving seed production when developing new cultivars, particulary for co... Mostrar Tudo |
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Palavras-Chave: |
Pasture; Processing; Production; Quality; Seed. |
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Thesagro: |
Brachiaria; Colheita; Dormência; Fisiologia; Pastagem; Processamento; Produção; Qualidade; Semente. |
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Thesaurus Nal: |
dormancy; harvesting; plant physiology; viability. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02693naa a2200433 a 4500
001 1318794
005 2007-06-05
008 1996 bl uuuu u00u1 u #d
020 $a958-9439-57-8
100 1 $aHOPKINSON, J. M.
245 $aReproductive physiology, seed production and seed quality of Brachiaria.
260 $c1996
300 $ap.124-140.
490 $a(CIAT Publication, 259).
500 $aCNPGC.
520 $aSeed of six commercial Brachiaria species is extensively produced for pasture sowing. Production is restricted geographically and seasonally by photoperiodic flowering reactions. It also requires a prior control of vegetative toller production, and therefore a reliable dry season. The necessary conditions are, most readily found at high tropical latitudes. Seed crop management is mostly conventinal. Vigorous synchronized tillering is stimulated by decapitation and use of nitrigenous fertilizer at times when rainfall, temperature, and sunshine are expected to favor unrestricted development. Ripe seed sheds readily and, coupled with imperfect synchronization of crop ripening, tends to make conventional direct harvesting inefficient and its timing critical. Where possible, seeds are let to fall and acumulate, and then recovered. Seed yields range from more than 1,000 kg/ha of pure seed to less than 100 kg/ha. Seed quality is heavily influenced by vitality and dormancy. Vitality depends mostly on maturity of seed harvest, being higher in accumulated fallen seed and much lower in directly severed seed. Dormancy is stringly developed in the genus and persists in most taxa at least into the season after harvest. This created problems for germination testing and in the field use of fresh seed. Breaching the husk, most commonly by sulfuric acid, provides of partial solution.Suggestions are offered for improving seed production when developing new cultivars, particulary for compatible with production at low latitude.
650 $adormancy
650 $aharvesting
650 $aplant physiology
650 $aviability
650 $aBrachiaria
650 $aColheita
650 $aDormência
650 $aFisiologia
650 $aPastagem
650 $aProcessamento
650 $aProdução
650 $aQualidade
650 $aSemente
653 $aPasture
653 $aProcessing
653 $aProduction
653 $aQuality
653 $aSeed
700 1 $aSOUZA, F. H. D. de
700 1 $aDIULGHEROFF, S.
700 1 $aORTIZ, A.
700 1 $aSANCHEZ, M.
773 $tIn: MILES, J.W.; MAASS, B.L.; VALLE, C.B. do, ed. Brachiaria: biology, agronomy and improvement. Cali: CIAT / Brasilia: EMBRAPA-CNPGC, 1996.
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Embrapa Gado de Corte (CNPGC) |
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| 1. |  | HOPKINSON, J. M.; SOUZA, F. H. D. de; DIULGHEROFF, S.; ORTIZ, A.; SANCHEZ, M. Reproductive physiology, seed production and seed quality of Brachiaria. In: MILES, J.W.; MAASS, B.L.; VALLE, C.B. do, ed. Brachiaria: biology, agronomy and improvement. Cali: CIAT / Brasilia: EMBRAPA-CNPGC, 1996. p.124-140. (CIAT Publication, 259). CNPGC.| Biblioteca(s): Embrapa Gado de Corte. |
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