1Deptt. of Genetics and Plant Breeding, B.N.P.G. College, Rath (Hamirpur), U.P.
2Directorate of Research, SVBPUA&T, Meerut (U.P.)-250110
Department of Genetics and Plant Breeding, Sardar Vallabh Bhai Patel University of Agriculture & Technology, Meerut-250110 (U.P.)
Mahalanobis D2 statistics revealed considerable genetic diversity among the 32 genotype of sorghum. The genotypes grouped into 7 clusters (cluster 1 had 14 genotypes, cluster II had 11 genotypes, cluster VI had 3 genotypes and cluster III, IV, V and cluster VII had 1 genotype each). This envisaged that the genotypes grouped within a particular cluster are more or less genetically similar to each other and apparent. Wide diversity is mainly due to the remaining genotype distributed over rest of the other clusters. The maximum intra cluster distance exhibited for cluster VI (53.36) and lowest intra cluster distance was recorded for cluster I (45.60). The maximum intra cluster distance was revealed between cluster IV and VI (125.10); whereas, minimum inter cluster distance was between clusters I and III (56.97). The hybridization between the genotypes like CPVI-1724, Varsha and SPV-1725 with SSG-59-3; and 2 genotypes viz. Pant Chari-3 and SSG 59-3 with JHV-14 and HC-260 with SSG-59-3, would produce heterotic hybrids and wide spectrum of variability in subsequent generations. The percent contribution leaves per plant (45.16) followed by green fodder yield per day (19.76), internode length (14.31) and leaf breadth (13.31) and most contributed towards genetic divergence.
Sorghum bicolour growth divergence
