Vol. 11, Issue 8 (2022)

Author(s):
Shailja Chauhan, DL Savithramma and Sritama Kundu

Abstract:
The present investigation was carried out in three backcross generations of two crosses C1 [(TMV 2 × ICGV 86699) × TMV 2] and C2 [(TMV 2 × ICGV GBFDS272) × TMV 2] in groundnut to assess the nature and extent of genetic variability, heritability and genetic advance. Most of the traits were accounted with high heritability and high GAM, which is a positive sign of least influence with the environment on population and showed presence of additive gene action. High heritability along with high GAM indicated additive gene effect, and these traits were expected to respond to selection with greater efficiency. Plant height and primary branches plant^-1 showed low heritability coupled with low genetic advance in all three back cross generations of both the crosses C1 and C2 indicate that the selection is not effective as non-additive genes govern the trait. Days to first flowering showed moderate heritability coupled with moderate genetic advance explaining non additive effect suggested that selection is less effective. Pods plant^-1, pod yield plant^-1, kernel yield plant^-1, SMK%, Shelling% and PDI @60, 75^th, 90^th and 105 DAS showed high heritability coupled with high genetic advance. These traits may serve as an effective selection parameter during breeding programs for crop improvement in the future.