skip to main content
Idioma:
Primo Search
Clear Search Box
Search in: Busca Geral
Busca Avançada
Busca por Índices

Effects of Water Stress and Hardening on the Internal Water Relations and Osmotic Constituents of Cotton Leaves

CUTLER, J. M. ; RAINS, D. W.

Physiologia plantarum, 1978-02, Vol.42 (2), p.261-268 [Periódico revisado por pares]

Oxford, UK: Blackwell Publishing Ltd

Sem texto completo

Citações Citado por
  • Título:
    Effects of Water Stress and Hardening on the Internal Water Relations and Osmotic Constituents of Cotton Leaves
  • Autor: CUTLER, J. M. ; RAINS, D. W.
  • É parte de: Physiologia plantarum, 1978-02, Vol.42 (2), p.261-268
  • Notas: istex:FA44CC8A28DEE2F0BEB6EEC2320B435EE5618551
    ArticleID:PPL261
    ark:/67375/WNG-3F8SFLV0-B
    Addresses presently: Department of Agronomy, Cornell University, Ithaca, N.Y. and Department of Agronomy & Range Science, University of California, Davis.
  • Descrição: Experiments were designed to test the hypothesis that the internal water relations of leaves are altered when cotton plants (Gossypium hirsutum L.‘Acala SJ‐2′) are conditioned by several cycles of water stress. Preliminary experiments suggested that plants so conditioned are less sensitive to water deficits and that the change might be partly explained by an accumulation of solutes or by structural alterations attendant on development under conditions of water stress. Leaves of preconditioned plants maintained turgor to lower values of water potential than did leaves of well‐watered plants. Accompanying this change was a lower osmotic potential at any given leaf water content in preconditioned plants. Tissue analysis of several osmotically active solutes indicated that soluble sugars and malate accumulate to about the same levels (dry‐weight basis) in both conditioned and unconditioned plants exposed to stress. These accumulations could not account for the turgor change. Analysis of the data on relative water content indicated that the leaves of conditioned plants had less water per unit dry weight than did leaves of controls. This change accounts for a substantial fraction of the difference between the osmotic potential of conditioned and control plants. The results of a simple model suggest that structural changes may play a significant role in explaining differences in the responses of conditioned and control plants to water stress.
  • Editor: Oxford, UK: Blackwell Publishing Ltd
  • Idioma: Inglês
Voltar para lista de resultados

  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

Buscando em bases de dados remotas. Favor aguardar.