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Effect of drought on physiological traits of upland ahu rice cultivars at vegetative stage



Effect of drought on physiological traits of upland ahu rice cultivars at vegetative stage



Crop Research (Hisar) 19(3): 434-439



A pot experiment was conducted to study the effect of drought on physiological traits of upland rice cultivars in net house thereby making a comparable study amongst the cultivars for drought tolerance. The cultivars were grown under two moisture regimes, stress and non-stress. Leaf area, relative leaf water content (RLWC) and root and shoot dry weight decreased significantly under stress. The cultivars Iharsal ahu and Maibee II maintained higher RLWC and recorded lower reduction in leaf area and root and shoot dry weight. All the tested cultivars also differed significantly in respect of leaf chlorophyll, proline, total soluble protein and nitrate reductase activity (NRA) under stress and non-stress conditions. But cultivars Iharsal ahu and Maibee II recorded higher proline content and NRA under stress. These two cultivars also maintained higher nitrogen, phosphorus and potassium as compared to other cultivars under stress.

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Accession: 034794334

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