Drought stress response of rice yield (Oryza sativa L.) and role of exogenous salicylic acid
Paper Details
Drought stress response of rice yield (Oryza sativa L.) and role of exogenous salicylic acid
Abstract
The scarcity of water is a severe environmental constraint to plant productivity. The exogenous application of salicylic acid (SA) has been found very effective in reducing the adverse effects of drought stress. A pot experiment was conducted to determine the drought mitigating effect of Salicylic acid on rice based on Randomized Complete Block Design (RCBD) with three replications during the 2017-2018 growing season at Dhaka, Bangladesh. The treatments of salicylic acid including 0, 250, 500, 750 and 1000 µMm-2 concentrations and drought stress consisted of control, moderate and severe stresses. Significantly higher number of panicle hill-1, number of filled grain hill-1, and number of unfilled grain hill-1, 1000 grains weight, grain yield, straw yield and harvest index were found in plants treated with 750 µMm-2 SA compared with other treatments and control plants. Results signify the role of SA in regulating the drought response of plants and suggest that SA could be used as a potential protectant, for improving plant growth and productivity under water stress.
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Md. Tofail Hosain, Kamrunnahar, Md. Mofizur Rahman, Mostarak Hossain Munshi, Md. Saidur Rahman (2020), Drought stress response of rice yield (Oryza sativa L.) and role of exogenous salicylic acid; IJB, V16, N2, February, P222-230
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