Water Relations of Cotton Plants under Nitrogen Deficiency: III. STOMATAL CONDUCTANCE, PHOTOSYNTHESIS, AND ABSCISIC ACID ACCUMULATION DURING DROUGHT 1
AUTOR(ES)
Radin, John W.
RESUMO
Nitrogen nutrition exerted a strong effect on stomatal sensitivity to water stress in cotton. In well-watered plants grown with 0.31 millimolar N in the nutrient solution, stomata closed at a water potential of -9 bars even though the wilting point was below -15 bars. For each doubling of nutrient N level, the water potential for stomatal closure decreased by about 2 bars. Elevated intercellular CO2 concentrations caused only slight stomatal closure regardless of N nutrition. Exogenous abscisic acid (ABA) greatly increased stomatal sensitivity to elevated CO2 concentrations.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=425632Documentos Relacionados
- Water Relations of Cotton Plants under Nitrogen Deficiency: I. Dependence upon Leaf Structure
- Water Relations of Cotton Plants under Nitrogen Deficiency: II. Environmental Interactions on Stomata
- Osmoregulation in Cotton in Response to Water Stress 1: I. ALTERATIONS IN PHOTOSYNTHESIS, LEAF CONDUCTANCE, TRANSLOCATION, AND ULTRASTRUCTURE
- Stomatal conductance of maize under water and nitrogen deficits
- Stomatal Response of Cotton to Water Stress and Abscisic Acid as Affected by Water Stress History 1