Vol. 11, Issue 7 (2022)

Author(s):
Pushpanjali Kushawaha, Pooran Chand, Anjali, Nirdesh Kumar Chaudhary and Shiva Mohan

Abstract:
A total 55 genotype comprising ten parents and their forty-five crosses were presented to study the genetic components and their magnitude effects through diallel mating design. Gene action is a principle, measures of allelic interactions for traits that express the nature of phenotypic behavior, and leads to perfect selection of traits. This study was aimed to measure the allelic interactions of genes responsible for different quantitative traits which have strong association with yield and its contributing characters in rice. The estimates of additive component of genetic variation were highly significant for most of the traits, viz. grains per panicle, spikelet’s per panicle, days to 50% flowering, days to maturity, plant height, gel consistency, harvest-index, biological yield per plant, hulling percentage, 1000-grain weight, kernel length after cooking, panicle length, and L/B ratio; except grain yield per plant. Dominance and epistatic interactions played a role in the inheritance of yield and grain quality characters in rice. It can be categorically stated reciprocal recurrent selection or diallel selective mating system are the need of the hour to modify e genetic architecture of rice for attaining higher yields with desirable properties.