Vol. 10, Issue 11 (2021)

Author(s):
Saikiran Pendyala, SS Desai, BD Waghmode, VG Chavan and VR Suthediya

Abstract:
The investigation was carried out to assess the extent of genetic variability and diversity for yield and yield related traits in fifty genotypes of rice. High heritability estimates along with high genetic advance as percent of mean and high GCV & PCV were recorded for number of tillers per panicle, number of filled grains per panicle, number of spikelets per panicle, test weight and L/B ratio. This indicates, by improvement of these characters would be more effective in crop improvement programme. The 50 genotypes were grouped into six clusters based on relative magnitude of D² values. Among six largest one is cluster I which consisted of 45 genotypes, while remaining five clusters comprising with one genotype each (mono genotypic). The inter-cluster distance was observed maximum in cluster IV and VI followed by cluster III and VI indicated wide range of variation among the clusters formed. Hence, for efficient hybridization programme in rice the genotypes underlying in IV and VI clusters could 3be used. Grain yield per plant (g) (16.51%) recorded highest contribution towards genetic divergence.