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The extent of genetic diversity for yield and its attributing traits in 25 genotypes each of Hybrid Tea and Floribunda groups were studied. On the basis of Mahalanobis6 D2 statistics grouping of these genotypes was done grouped. Ten clusters in Hybrid Tea and nine clusters in Floribunda resulted. In Hybrid Tea, the inter cluster distance varied from 349.30 (between cluster IX and VII) to 8159.59 (between cluster X and V). In Floribunda roses, the inter cluster distance ranged from 387.40 (between clusters IV and II) to 2647.54 (between clusters VIII and III). The clusters were highly divergent suggesting the presence of wide genetic diversity in the material. Genotypes from divergent clusters can be selected for hybridization programme to get desirable recombinants. The characters number of leaves at first flower and number of days to first flower contributed maximum towards genetic divergence followed by number of petals per flower and flower size.
Keywords: Hybrid Tea, Floribunda, Roses, diversity, variability, clusters and genotypes.