Vol. 13 No. 1
Genetic parameters estimation for yield and yield related traits in rice (Oryza sativa L.) with drought tolerance trait under stress condition
Author(s): H. S. GARG, P. KUMARI, C. BHATTACHARYA, S. PANJA AND R. KUMAR
Abstract: Drought is a major abiotic stress that causes severe yield loss in rice, a staple food crop, affecting 20 per cent of the total rice growing area in Asia. Keeping these in view, the present investigation was carried out to assess the extent of genetic variability for yield and yield related traits and to estimate heritability and genetic advance in rice genotypes for drought tolerance. The genotypes exhibited high variability for the characters like number of grains per panicle and plant height under both condition. The traits like plant height, flag leaf area, chlorophyll content, leaf drying at vegetative stage, and seed yield per plant showed high heritability coupled with high genetic advance as per cent of mean under both stress and normal conditions. Hence, the direct selection of these characters may be useful for future improvement of genotypes under respective environment for improvement of drought tolerance and highergrain yield.
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