Variability, heritability and genetic advance studies in F2 population of rice (Oryza sativa L.)

Abstract

An investigation was carried out in F2 population of eight crosses with 160 single plants to estimate the variability,\rheritability, genetic advance and genetic advance as percentage. The results showed that PCV values in general was higher than\rGCV for various characters studied. The high PCV and GCV values was obtained for single plant yield followed by number of\rproductive tillers per plant and low PCV and GCV was observed for plant height and panicle length. The small difference observed\rbetween GCV and PCV indicate the presence of high genetic variability for the traits which may facilitate selection. The traits\rthousand grain weight and number of fertile spikelet per panicle and single plant yield had high heritability along with high\rgenetic advance as per cent of mean indicate that these characters attributable to additive gene effects which are fixable revealing\rthat improvement in these characters would be possible through direct selection.