Vol. 11, Issue 12 (2022)

Author(s):
Chirag Solanki, Pramod Mistry, Rumit Patel and Kalpesh Raval

Abstract:
The present investigation was started from kharif-2019 at Main Rice Research Centre, NAU, Navsari to study the genetic parameters viz., gene action, heterosis, inbreeding depression, heritability and genetic advance of three crosses through generation mean analysis each having P1, P2, F1, F2, BC1 and BC2 generations evaluated in a Compact Family Block Design with three replications. Highly significant and positive relative heterosis, heterobeltiosis and inbreeding depression were recorded in all the crosses for most of the traits. For grain yield per plant, the best heterotic cross was cross I (Indrayani × NVSR-403) who showed highly significant heterosis in the desired direction for days to 50% flowering, days to maturity, plant height, 1000 grain weight, grain yield per plant and protein content. So, heterosis breeding in cross I would be a more practical approach for higher grain yield.