Performance of some quantitative characters of rice genotypes grown under rainfed condition
Performance of some traditional rice genotypes having seventeen quantitative characters were evaluated in the kharif season, 2011 in Jharkhand. Significant variation was observed in different component characters. Genetic variability and correlation coefficients were also estimated for these morphological traits. Highest GCV and PCV were reported for total number of productive tillers/hill, number of unproductive tillers/hill, number of seeds per panicle, days to maturity, straw yield and yield per plant. High heritability was observed for all the traits except, harvest index. High heritability accompanied by moderate to high genetic advance as percent of mean was observed for plant height, number of tillers per plant, panicle length, leaf blade length, leaf width, 100 grain weight, grain yield per plant and straw yield. Grain yield per plant was positively and significantly associated with days to 50 % flowering, days to maturity and other seven characters. Most of the traits showed high additive gene action and simple pedigree selection would be rewarding for these characters. Character association both at genotypic and phenotypic level indicated selection can be done for the each and individual characters for trait based crop improvement and for further hybridization programme.
Key words: quantitative characters, genetic variability, correlation