Correlation and path analysis in aromatic lines of rice (Oryza sativa L.)

Abstract

The forty five aromatic rice genotypes were used to study the Correlation and path analysis for the associations between component characters and to estimate direct and indirect effect of the component characters on yield. Grain yield per plant showed highly significant positive correlation with straw yield per plant, harvest index, number of grains per panicle and productive tillers per plant. The character days to 50 percent flowering with days to maturity, productive tillers per plant and number of tillers per sq.m.; days to maturity with plant height and productive tiller per plant; productive tillers per plant with number of tillers per sq.m. and straw yield per plant and number of grains per panicle with straw yield per plant showed significant positive correlation with each other. The highest positive direct effect on grain yield per plant was exerted by straw yield per plant, harvest index number of tillers per sq.m. So, improvement in seed yield can be achieved by selecting respective characters directly. The characters viz., straw yield per, number of tillers per sq.m. and days to maturity has positive indirect effect on grain yield.