Genetic diversity analysis for yield and yield attributing traits of wild germplasm in rice

Abstract

A study was conducted with forty wild rice germplasm line at Banaras Hindu University, Varanasi during Kharif 2018 and evaluated for twelve quantitative characters using D2 analysis in order to study the diversity pattern among the wild genotypes. The genotypes were grouped into 7 clusters. Maximum number of genotypes (32) were grouped under cluster I followed by cluster IV with 3 genotypes, while clusters II, III, V, VI and VIII, had only one genotype each. The maximum inter-cluster distance was observed between II and VII followed by clusters I and VII. Hence, the genotypes in cluster II viz., WRG(NKS)-426 had wider diversity with WRG(NKS)-440 in cluster VII and the genotypes in cluster I showed wider diversity with WRG(NKS)-440 in cluster VII, so these lines may be utilized in further breeding programme for the enhanced yield. The intra-cluster distance was maximum in cluster I followed by cluster IV indicating hybridization involving genotypes within the same clusters can result in good combinations. The trait, total grain yield per plant contributed maximum towards total genetic divergence followed by filled grain per panicle and test weight of grain. Therefore, these characters may be given importance during hybridization programme.