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Registro Completo |
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
20/11/1992 |
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Data da última atualização: |
20/11/1992 |
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Autoria: |
GIMENEZ, C.; FERERES, E. |
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Afiliação: |
University of Cordoba, Apartado 3048. 14071 Cordoba, Spain. |
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Título: |
Genetic variability in sulflower cultivars under drought. II Growth and water relations. |
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Ano de publicação: |
1986 |
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Fonte/Imprenta: |
Australian Journal of Agricultural Research, v.37, p.583-597, 1986. |
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Idioma: |
Inglês |
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Conteúdo: |
Experiments were conducted between 1981 and 1983 at Cordoba, Spain to determine the morphophysiological basis for the differences in yield responses to drought of eight sunflower genotypes. There was genotypic variation in most characters examined, particularly in maximum leaf area and in leaf area duration, biomass accumulation and distribution, and in root water extraction. Long-season genotypes had greater leaf area and produced more biomass under drought conditions, exploring the subsoil down to 270 cm. Short-season genotypes restricted water extraction to the top 180 cm of the soil profile and had about half of the leaf area duration of a long-season cultivar. Evidence is presented of small differences in osmotic adjustment among genotypes. The relations between leaf area and grain yield as well as calculations of a carbon balance for the reproductive period suggest genotypic differences in photosynthetic efficiency under drought. |
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Palavras-Chave: |
Drought resistant; Sunflower; Yield. |
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Thesagro: |
Área Foliar; Girassol; Helianthus Annuus; Rendimento; Resistência; Seca. |
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Thesaurus Nal: |
leaf area. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01627naa a2200253 a 4500
001 1457680
005 1992-11-20
008 1986 bl --- 0-- u #d
100 1 $aGIMENEZ, C.
245 $aGenetic variability in sulflower cultivars under drought. II Growth and water relations.
260 $c1986
520 $aExperiments were conducted between 1981 and 1983 at Cordoba, Spain to determine the morphophysiological basis for the differences in yield responses to drought of eight sunflower genotypes. There was genotypic variation in most characters examined, particularly in maximum leaf area and in leaf area duration, biomass accumulation and distribution, and in root water extraction. Long-season genotypes had greater leaf area and produced more biomass under drought conditions, exploring the subsoil down to 270 cm. Short-season genotypes restricted water extraction to the top 180 cm of the soil profile and had about half of the leaf area duration of a long-season cultivar. Evidence is presented of small differences in osmotic adjustment among genotypes. The relations between leaf area and grain yield as well as calculations of a carbon balance for the reproductive period suggest genotypic differences in photosynthetic efficiency under drought.
650 $aleaf area
650 $aÁrea Foliar
650 $aGirassol
650 $aHelianthus Annuus
650 $aRendimento
650 $aResistência
650 $aSeca
653 $aDrought resistant
653 $aSunflower
653 $aYield
700 1 $aFERERES, E.
773 $tAustralian Journal of Agricultural Research$gv.37, p.583-597, 1986.
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Embrapa Soja (CNPSO) |
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| 1. |  | BULING, A.; FORNELINO, A. C.; RUAS, J.; WENDT, L. W.; FARIAS, N. A. da R.; PINHEIRO, M. S.; CASADO, N.; GIMÉNEZ, C.; VALEIRÓN, C. R.; PENÃFIEL, G. D.; CARRETERO, J. C. B. The role of wild mammals as reservoir hosts of Babesia and Theileria. Parassitologia, Palermo, v. 49, suppl. 1, p. 79, maio, 2007.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: Nacional - A |
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