Recovery patterns after rewatering of water stressed sunflower (Helianthus annuus L.) plants
1988
Miah, M.A.S. | Smith, A.R. | Hall, M.A. (Sugarcane Research and Training Inst., Ishurdi, Pabna (Bangladesh))
Recovery patterns of sunflower plants upon relief of water stress were examined. Sunflower plants were grown in the glasshouse and approximately 30-day old plants were exposed to water stress by withholding water supply for a period of 3, 5, 7 and 9 days. At the end of each stress period, rewatering was done and recovery patterns with respect to the shoot fresh and dry weight, internode production, stem elongation, shoot water content, leaf water potential, leaf area, and stomatal conductance were investigated up to 21 days of rewatering. Water-stressed plants had a remarkable ability to recover once the stress is relieved provided that the stress period was not too severe or prolonged. Length of recovery period after rewatering was found to be dependent on the degree of severity of stress. Length of recovery period increased as the severity of stress was increased.
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