S. MAHITHA*, R.P VASANTHI, K. HARIPRASAD REDDY AND G. MOHAN NAIDU

Dept. of Genetics and Plant Breeding, S.V. Agricultural College, ANGRAU, Tirupati – 517 502, Chittoor Dt., Andhra Pradesh

ABSTRACT

The present study aims to reveal the importance of quantitative traits and genetic variability existing in F3 generation of two crosses, TCGS-1157 × TCGS-1073 and TCGS-1157 × TCGS-1043 of groundnut. The coefficient of variation at genotypic levels were high for number of secondary branches, number of pegs per plant, SLA, SLW, total biomass per plant, shoot weight per plant, number of mature pods per plant, mature pod weight per plant and kernel weight per plant and moderate for number of primary branches per plant, number of immature pods per plant, shelling out-turn and harvest index. Plant height and SCMR at 30 DAS and SCMR 60 DAS showed low GCV. From the results, high heritability coupled with high genetic advance observed for number of secondary branches per plant, number of pegs per plant,, total biomass per plant, shoot weight per plant, mature pods per plant, harvest index, mature pod weight per plant, kernel weight per plant, SLA and SLW indicated the presence of additive gene effects and simple selection would be effective for improvement of these traits

KEYWORDS:

Genetic variability, PCV, GCV, heritability, genetic advance, pod yield, groundnut.