Genetic variability, heritability and genetic advance of grain yield and quality in aromatic rice

Abstract

F3 generations of 28 crosses were evaluated for the genetic parameters in rice. The estimates of GCV were lower than the respective PCV, indicating the influence of environmental factors on the expression of the quantitative and qualitative traits studied. In F3 population, higher magnitudes of PCV and GCV recorded for no. of filled grains/panicle and panicle weight and indicated greater scope of obtaining high selection response for these traits. The high estimates of heritability in broad sense with moderate genetic advance were recorded for the yield components viz., panicle length, filled grains per panicle and 1000 grain weight and kernel traits viz., kernel length and L/B ratio, which suggested that additive genetic effects played greater role as such, the chances of obtaining desirable segregants with good yield potential and quality are very bright through direct selection.