Genetic variability studies in terminal drought tolerant groundnut (Arachis hypogaea L.)

Abstract

Forty nine terminal drought tolerant groundnut genotypes of groundnut were evaluated during Kharif 2016 for genetic parameter viz., variability, heritability and genetic advance. The estimates of PCV and GCV were high for immature pods per plant, dry pod yield (kg/ha), haulm yield, root volume and root dry weight under both normal and control condition. High heritability coupled with high genetic advance expressed as percentage of mean was observed for plant height, primary branches per plant, matured pods per plant, haulm yield, dry pod yield (kg/ha), hundred kernels weight, root length, average root diameter, specific leaf area, SPAD chlorophyll meter reading and harvest index indicating that these traits were mainly governed by additive gene action and responsive for further improvement of these traits.