Vol. 11, Issue 2 (2022)

Author(s):
Ganesh Kumar Koli, Sameer Upadhyay, SR Rathi, Sneha Gupta, Gayatri Kumawat, PK Singh and B Sinha

Abstract:
An experiment was conducted with forty wild rice germplasm lines (Oryza nivara and Oryza rufipogon) at Banaras Hindu University, Varanasi during kharif season 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 (588.21) followed by clusters I and VII (305.92). 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 viz., WRG(NKS)-401, WRG(NKS)-402, WRG(NKS)-403, WRG(NKS)-404, WRG(NKS)-405, WRG(NKS)-406, WRG(NKS)-407, WRG(NKS)-408, WRG(NKS)-409, WRG(NKS)-410, WRG(NKS)-411, WRG(NKS)-412, WRG(NKS)-413, WRG(NKS)-414, WRG(NKS)-415, WRG(NKS)-416, WRG(NKS)-417, WRG(NKS)-418, WRG(NKS)-419, WRG(NKS)-422, WRG(NKS)-423, WRG(NKS)-425, WRG(NKS)-427, WRG(NKS)-428, WRG(NKS)-430, WRG(NKS)-431, WRG(NKS)-432, WRG(NKS)-433, WRG(NKS)-435, WRG(NKS)-436, WRG(NKS)-437 and WRG(NKS)-438 had wider diversity with WRG(NKS)-440 in cluster VII, and these lines may be utilized in further breeding programme for the exploitation of hybrid vigour. The intra-cluster distance was maximum in cluster I (44.67) followed by cluster IV (40.31) indicating hybridization involving genotypes within the same clusters may result in good cross combinations. The trait, total grain yield per plant contributed maximum (32.18%) towards total genetic divergence followed by filled grain per panicle (15.00%) and test weight of grain (14.36%). Therefore, these characters may be given importance during hybridization programmes.