Effect of abscisic acid and zeatin on water stress induced photosynthesis and respiration in sunflower leaves
1985
Goswami, B.K. | Srivastava, G.C. (Indian Agricultural Research Inst., New Delhi (India). Div. of Plant Physiology)
An experiment was conducted to investigate the effect of abscisic acid and zeatin on water potential, stomatal resistance, photosynthesis, respiration, chlorophyll content and transpiration in leaves of sunflower grown under water stress condition in controlled environment. Lowering of 'psi'(L) under water stress condition led to corresponding increase in diffusion resistance, decrease in transpiration, chlorophyll, photosynthesis and dark respiration. Application of ABA resulted in lesser lowering of 'psi'(L) from 3rd day onwards and co1473mpared to control (i.e. water stress treatment only) increases diffusion resistance relatively higher while transpiration, total chlorophyll, photosynthesis and dark respiration were lowered. On the other hand opposite trends were seen for kin
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