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Biblioteca(s):  Embrapa Soja.
Data corrente:  03/03/2006
Data da última atualização:  03/03/2006
Autoria:  TOBITA, S.; NASTASA, V.; SENOO, S.; NEPOMUCENO, A. L.; FARIAS, J. R. B.; NEUMAIER, N.
Título:  Water use efficiency and carbon isotope discrimination in Brazilian soybean cultivars under water stress.
Ano de publicação:  2005
Fonte/Imprenta:  In: INTERNATIONAL CONFERENCE ON INTEGRATED APPROACHES TO SUSTAIN AND IMPROVE PLANT PRODUCTION UNDER DROUGHT STRESS, 2., 2005, Rome. InterDrought - II: final program and abstract book. Rome, 2005. Não paginado.
Idioma:  Inglês
Notas:  Resumo: P 5.85.
Conteúdo:  Water use efficiency (WUE), or transpiration efficiency, is well known to closely relate with dry matter production under drought stress in many plants and crops. It can be applicable as a varietal screening criterion for drought tolerance, but the direct measurement of WUE in: field is not possible. In C3 plants, the relationship of WUE and carbon isotope discrimination (CID) has been empiricalIy documented and physiologicalIy elucidated. A pot experiment was conducted in Tsukuba, Japan, in summer of 2004, with precise and regular measurement of the amount of supplied and transpiring water for the estimation of WUE of soybean (Glycine max L. [Merr.]) cultivars from Brazil under well-watered and water-stressed conditions, as welI as instantaneous WUE (WUEi) in several occasions. Leaf samples were colIected of the youngest fulIy expanded trifoliate and analyzed for Ôl3C values by an IRMS, which were then converted to CID with use of -8.00% as the ÔI3C of the air. Under well-watered condition, WUE was ranged from 2.7 to 3.3 g L-1 and significantly higher in Conquista (drought-tolerant), as compared with BRS-183 (tolerant), BRS-185 and Aurora. WUE was apparently increased to be around 3.4 g L-1 in alI cultivars by water stress from the beginning of flowering for 25 days. of welI-watered Conquista leaves was significantly lower (17.7%) than other cultivars (around 19%). Under the water stress, decreased to be from 17.2 to 17.9% for alI cultivars. There was a negative linear cor... Mostrar Tudo
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Registro original:  Embrapa Soja (CNPSO)
Biblioteca ID Origem Tipo/Formato Classificação Cutter Registro Volume Status URL
CNPSO26067 - 1UPCSP - --1104311043

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1.Imagem marcado/desmarcadoTOBITA, S.; NASTASA, V.; SENOO, S.; NEPOMUCENO, A. L.; FARIAS, J. R. B.; NEUMAIER, N. Water use efficiency and carbon isotope discrimination in Brazilian soybean cultivars under water stress. In: INTERNATIONAL CONFERENCE ON INTEGRATED APPROACHES TO SUSTAIN AND IMPROVE PLANT PRODUCTION UNDER DROUGHT STRESS, 2., 2005, Rome. InterDrought - II: final program and abstract book. Rome, 2005. Não paginado. Resumo: P 5.85.
Biblioteca(s): Embrapa Soja.
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2.Imagem marcado/desmarcadoTOBITA, S.; YAMANAKA, N.; NEPOMUCENO, A. L.; FARIAS, J. R. B.; NEUMAIER, N.; SENOO, S.; NASTASA, V. Physiological evaluation of drought tolerance in Brazilian soybean cultivars: water use efficiency and carbon isotope discrimination. In: SUENAGA, K.; KUDO, H.; OSHIO, S. (Ed.). Comprehensive studies on the development of sustainable soybean production technology in South America. Tsukuba: JIRCAS, 2007. p. 27-33. (JIRCAS Working Report, 51).
Tipo: Capítulo em Livro Técnico-Científico
Biblioteca(s): Embrapa Soja.
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