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Registro Completo |
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
23/12/2016 |
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Data da última atualização: |
23/12/2016 |
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Autoria: |
CRAUFURD, P. Q.; ELLIS, R. H.; SUMMERFIELD, R. J.; MENIN, L. |
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Afiliação: |
IITA; UNIVERSITY READING; UNIVERSITY OF READING; UNIVERSITY OF READING. |
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Título: |
Development in Cowpea (Vigna unguiculata). I. The influence of temperature on seed germination and seedling emergence. |
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Ano de publicação: |
1996 |
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Fonte/Imprenta: |
Experimental Agriculture, v. 32, n. 1, p. 1-12, January 1996. |
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Idioma: |
Inglês |
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Conteúdo: |
The base (Tb), optimum (To) and ceiling (Tce) temperature for 50% seed germination and seedling emergence, and the thermal time at sub-optimal temperatures (θ1), were examined in experiments with a range of cowpea genotypes from different habitats and latitudes. There was substantial genotypic variation in seed germination for Tb and To, but not for Tce. There was no evidence that genotypes from semi-arid habitats had higher values of To or Tce, but estimates of Tb for seed germination were related to latitude and were highest in genotypes originating from close to the equator. The significance of these responses as a component of developmental plasticity in relation to the adaptation of cowpeas is discussed. |
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Palavras-Chave: |
Emergência de plântula; Feijão caupi. |
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Thesagro: |
Clima Tropical; Germinação; Semente; Temperatura. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01401naa a2200229 a 4500
001 2059211
005 2016-12-23
008 1996 bl uuuu u00u1 u #d
100 1 $aCRAUFURD, P. Q.
245 $aDevelopment in Cowpea (Vigna unguiculata). I. The influence of temperature on seed germination and seedling emergence.
260 $c1996
520 $aThe base (Tb), optimum (To) and ceiling (Tce) temperature for 50% seed germination and seedling emergence, and the thermal time at sub-optimal temperatures (θ1), were examined in experiments with a range of cowpea genotypes from different habitats and latitudes. There was substantial genotypic variation in seed germination for Tb and To, but not for Tce. There was no evidence that genotypes from semi-arid habitats had higher values of To or Tce, but estimates of Tb for seed germination were related to latitude and were highest in genotypes originating from close to the equator. The significance of these responses as a component of developmental plasticity in relation to the adaptation of cowpeas is discussed.
650 $aClima Tropical
650 $aGerminação
650 $aSemente
650 $aTemperatura
653 $aEmergência de plântula
653 $aFeijão caupi
700 1 $aELLIS, R. H.
700 1 $aSUMMERFIELD, R. J.
700 1 $aMENIN, L.
773 $tExperimental Agriculture$gv. 32, n. 1, p. 1-12, January 1996.
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