Vol. 11, Issue 7 (2022)

Author(s):
Ankit Chaudhary, Pramod Mistry, Pathik Patel and Deepak Sharma

Abstract:
The current study began in rabi-2019 at the Main Rice Research Centre, intending to determine the genetic parameters of three crosses, including heterosis, inbreeding depression, heritability, and genetic advance, using generation mean analysis (each of which has P₁, P₂, F₁, F₂, BC₁, and BC₂ generations) in a Compact Family Block Design (CFBD) with three replications. For the majority of the characteristics, very substantial and positive relative heterosis, heterobeltiosis, standard heterosis, and inbreeding depression were seen in all crosses. The best heterotic cross for grain yield per plant was cross I (IET-24336 × IET-26375), which showed significant heterosis in the desired direction for days to flowering, days to maturity, productive tiller per plant, grains per panicle, panicle length, 100-grain weight, grain yield per plant, straw yield per plant, grain length, protein content, and amylose content For the majority of the traits in all three crosses, high to moderate heritability (narrow-sense) values were found, along with moderate to high genetic advance. As a result, traits with high heritability and high genetic advance can be further improved by adopting selections in subsequent generations.