Vol. 7, Issue 3 (2019)
Genetic diversity analysis in Tagetes erecta L. genotypes
Author(s): J Lydia, V Ponnuswami and T Thangaselvabai
Abstract: The present investigation on “Genetic variability studies in marigold genotypes†was conducted at the Department of Floriculture and Medicinal Crops, Horticultural College and Research Institute, Periyakulam during 2013-2014 to assess the existence of genetic variability in divergent genotypes of marigold (Tagetes erecta). The genetic divergence study based on D2 analysis grouped the 31 genotypes of Tagetes erecta into seven clusters. The genotypes were raised in Randomized block design with three replications and these genotypes were grouped in seven clusters. The genotypes AM-1, 34, 9, 11, 16, 17, 22, 25, 27, 28 and 31 were collected from NBPGR, TNAU, IIHR and FRS. The maximum intra cluster distance is 269.573 (cluster VI) followed b 266.028, 265.385, 261.521 of the same cluster. The inter cluster distance ranged between 94.461 and 269.573. The ranking of component characters for divergence using D2 analysis revealed that the character duration of flowering contributed maximum divergence followed by flower yield per plant and days to harvest. The pattern of distribution of these genotypes in various clusters showed considerable amount of genetic divergence among these genotypes for all the vegetative and flowering characters studied. Depending upon the mean value, the genotypes can be used us parents in hybridization programme for the higher yield. As these genotypes have better means for yield and yield contributing characters and are placed in different clusters showing great genetic diversity.
Pages: 2766-2768 | 496 Views 139 Downloads
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How to cite this article:
J Lydia, V Ponnuswami, T Thangaselvabai. Genetic diversity analysis in Tagetes erecta L. genotypes. Int J Chem Stud 2019;7(3):2766-2768.
