Vol. 6, Issue 5 (2018)
Genetic divergence study in determinate tomato (Solanum lycopersicum L.)
Author(s): Meera Rojalin, P Tripathy, GS Sahu, SK Dash, D Lenka, Barsha Tripathy and Priyanka Sahu
Abstract: Field trial was conducted at AICRP on Vegetable Crops, OUAT, Bhubaneswar during rabi season of 2017-18 to study the extent of genetic variability exists among the genotypes for fruit yield improvment of determinate tomato. The results revealed that eighteen genotypes of determinate tomato were which were grouped into five clusters on the basis of fourteen quantitative traits. Cluster I and II were found to be the largest with five genotypes in each followed by cluster IV and III with four and three genotypes in each while cluster V was monotypic. The highest average D2 value was observed in cluster IV (103.00), which revealed maximum genetic diversity among the constituent genotypes. The least intra cluster distance was observed by cluster III (58.66). The higher cluster distance of 380.39 was observed between Cluster III and II and minimum between cluster III and I (133.03). Genotypes of Cluster-II had better vegetative growth and fruit yield character. Similarly, cluster III genotypes produced heavy fruits while that of Cluster V genotypes recorded earliness, higher % of fruit set and fruits plant-1. Out of five clusters, derived through Tocher’s method of genetic divergence analysis, it can be concluded that, crosses involving genotypes of cluster III (2016/TODVAR-06, 2016/TODVAR-08, 2016/TODVAR-09) and cluster II (2016/TODVAR-05, 2016/TODVAR-11, 2016/TODVAR-12, Pusa 120, Pusa Rohini) can be used in hybridization programme to produce either desirable hybrids or recombinants in segregating generations due to high genetic divergence.
Pages: 3400-3402 | 456 Views 93 Downloads
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How to cite this article:
Meera Rojalin, P Tripathy, GS Sahu, SK Dash, D Lenka, Barsha Tripathy, Priyanka Sahu. Genetic divergence study in determinate tomato (Solanum lycopersicum L.). Int J Chem Stud 2018;6(5):3400-3402.
