Data/hora: 15/06/2024 16:10:14

Biblioteca(s): | Embrapa Mandioca e Fruticultura.
Data corrente: | 16/02/2000
Data da última atualização: | 16/02/2000
Autoria: | TARDIEU, F.; ZHANG, J.; GOWING, D. J. G.
Afiliação: | INRA, Laboratore d'Agronomie, F 78850 Thiverval Grignon, France, and University of Lancaster Division of Biological sciences, Lancaster.
Título: | Stomatal control by both [ABA] in the xylem sap and leaf water status: a test of a model for droughted or ABA-fed field-grown maize.
Ano de publicação: | 1993
Fonte/Imprenta: | Plant, Cell and Environment, v.16, p.413-420, 1993.
Idioma: | Inglês
Conteúdo: | A model of maize stomatal behaviour has been developed, in which stomatal conductance is linked to the concentration of abscisic acid ([ABD]) in the xylem sap, with a sensitivity dependent upon the leaf water potential. It was tested against two alternative hypotheses, namely that stomatal sensitivity to xylem [ABA] would be linked to the leaf-to-air vapour pressure difference (VPD), or to the flux of ABA into the leaf. Stomatal conductance (gs) was studied: in field-grown plants whose xylem [ABA] and depended on soil water status and evaporative demand; in field-grown plants fed with ABA solution such that xylem [ABA] was artificially raised, thereby decreasing gs and increasing and leaf-toair VPD; and in ABA-fed detached leaves exposed to varying demands, but with a constant and high.
Categoria do assunto: | --
Registro original: | Embrapa Mandioca e Fruticultura (CNPMF)
Exemplares: | CNPMF - (17678-1) - ADD - SP - -- - S11740 -  - S11740 - DIS