National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
Genetic divergence study, using Mahalanobis D2 statistics, was conducted in twenty-three onion genotypes for fourteen characters. Among the characters studied; total yield, phenol, pyruvic acid, vitamin C content contributed maximum towards divergence. The maximum number of genotypes was grouped into cluster VI while the minimum was in cluster VIII. The intra-cluster distance varied from 0.00 (cluster VIII) to 14.618 (cluster IV). The maximum inter-cluster distance (32.763) was found between cluster V and VIII, indicating that hybridization can be taken up between the genotypes of these two clusters for obtaining superior recombinants or transgressive segregants. The genotype of cluster VIII showed superior performance for the plant height at 60 DAT, polar and equatorial diameter, number of scales per bulb, total sugar and dry matter percentage, TSS, vitamin C, phenol and pyruvic acid content and total yield. The genotypes of cluster III were found to be superior for the number of days to maturity. Thus, based on the diversity pattern and mean performances, the genotypes viz., Sukhsagar from cluster VIII; Arka Bheem and Arka Niketan from cluster VI; Bhima Raj from cluster II and HO-3 from cluster V would be the best choice as parents for future hybridization programs.
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