Genetic Variability Parameters For Yield Components And Late Leaf Spot Tolerance In BC1F2 Population Of Groundnut (Arachis Hypogeaea L.)

Abstract

BC₁F₂ population of four crosses was evaluated to assess their genetic parameters. A wide range of variation was observed for the eight traits. High magnitude of PCV and GCV coupled with broadsense heritability and genetic advance as per cent of mean for these characters studied such as mature pods per plant, immature pods per plant, total pods per plant, mature seeds per plant, immature seeds per plant, haulm weight per plant, LLS disease score at 75 DAS and pod yield per plant in all the populations, whereas the direct crosses recorded high heritability coupled with high genetic advance as per cent of mean for LLS disease score at 90 DAS. So the selection may be effective for this trait in these populations. Most of the characters had low value of GCV as compared to the PCV indicating the scope for further genetic improvement. Owing to presence of wide variability, there is scope for yield improvement in these crosses.