Genetic Analysis of Some Agro- morphological Traits in Rice (Oryza sativa L) using Hayman's Graphical Approach

Abstract

Graphical analysis of a diallel cross provides useful information on the average degree of dominance, dominance order of the parents and additional information about the relationship among the parents. In the present study over dominance was evident for days to 50% flowering, 50% flowering to maturity, plant height, panicle weight, panicle length, grains per panicle, grain filling percent, length- breadth ratio and yield per plant; partial dominance for effective tillers per plant and 1000 grain weight. The parents were well scattered on the regression line indicating their diverse genetic nature.