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Registro Completo |
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Biblioteca(s): |
Embrapa Meio Norte / UEP-Parnaíba. |
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Data corrente: |
03/01/2002 |
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Data da última atualização: |
03/01/2002 |
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Autoria: |
BENNETT, J. M.; BOOTE, K. J.; HAMMOND, L. C. |
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Afiliação: |
Departments of Agronomy and Soil Science, University of Florida. |
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Título: |
Alterations in the components of peanut leaf water potential during desiccation. |
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Ano de publicação: |
1981 |
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Fonte/Imprenta: |
Journal of Experimental Botany, v.32, n.130, p.1035-1043, oct. 1981. |
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Idioma: |
Inglês |
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Conteúdo: |
Changes in components of leaf water potential during soil water deficits influence many physiological processes. Research results focusing on these changes during disiccation of peanut (Arachis hypogeae L.) leaves are apparently not available. The present study was conducted to examine the relationship of leaf water solute and turgor potentials, and percent relative water content (RWC) of peanut leaves during desiccation of detached leaves and also during naturally occurring soil moisture deficits in the field. The relationship of to and RWC was evaluated by calculating from differences in and determined by thermocouple psychrometry and by constructing pressure-volume (P-V) curves from the and RWC measurements. Turgor potential of Early Bunch and Florunner leaves decreased to zero at of-1.2 to - 1.3 MPa and RWC of 87%. There were no cultivar differences in the at which became zero. |
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Palavras-Chave: |
Peanut. |
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Thesagro: |
Amendoim; Arachis Hypogaea. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01408naa a2200181 a 4500
001 1071862
005 2002-01-03
008 1981 bl --- 0-- u #d
100 1 $aBENNETT, J. M.
245 $aAlterations in the components of peanut leaf water potential during desiccation.
260 $c1981
520 $aChanges in components of leaf water potential during soil water deficits influence many physiological processes. Research results focusing on these changes during disiccation of peanut (Arachis hypogeae L.) leaves are apparently not available. The present study was conducted to examine the relationship of leaf water solute and turgor potentials, and percent relative water content (RWC) of peanut leaves during desiccation of detached leaves and also during naturally occurring soil moisture deficits in the field. The relationship of to and RWC was evaluated by calculating from differences in and determined by thermocouple psychrometry and by constructing pressure-volume (P-V) curves from the and RWC measurements. Turgor potential of Early Bunch and Florunner leaves decreased to zero at of-1.2 to - 1.3 MPa and RWC of 87%. There were no cultivar differences in the at which became zero.
650 $aAmendoim
650 $aArachis Hypogaea
653 $aPeanut
700 1 $aBOOTE, K. J.
700 1 $aHAMMOND, L. C.
773 $tJournal of Experimental Botany$gv.32, n.130, p.1035-1043, oct. 1981.
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Embrapa Meio Norte / UEP-Parnaíba (CPAMN-UEPP) |
