Vol. 10, Issue 8 (2021)

Author(s):
Bharti Singh, Deepak Gauraha, Abhinav Sao and SK Nair

Abstract:
In this investigation genetic variability, heritability and genetic advance was studied in fifty advanced breeding lines along with five checks for eleven yield and nineteen quality traits during kharif 2020. Variance studies showed extremely significant variations among all the advanced breeding lines for all the yield and quality traits, suggesting presence of significant amount of variance. Number of unfilled grains/panicle (49.20), alkali spreading value (32.24), amylose% (30.36), gel consistency (27.05), number of filled grains/panicle (24.48), grain yield/plant (g) (22.40), head rice recovery % (22.20), biological yield per plant (g) (20.53) and harvest index % (19.16) showed high values of GCV and PCV. This indicates that considering these traits for direct selection will result in genetic improvement. The yield and quality traits which showed high estimates for genetic advance as % of mean along with high heritability were number of filled grain/panicle, biological yield/plant (g), number of unfilled grain/panicle, 100 seed weight (g), grain yield/plant (g), paddy L/B ratio, amylose %, kernel breadth after cooking (mm), brown rice L/B ratio, gel consistency, cooked rice L/B ratio, alkali spreading value and head rice recovery %. This implied that additive gene activity influenced the inheritance of these traits. Revealing a prevalence of additive gene action, thus providing scope for further improvement through selection.