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 |
Onion (Allium cepa L.) is an economical important crop, but genetic diversity among the genotypes is poorly understood. The study was conducted in Rabi, 2016 to access the genetic diversity in 33 onion genotypes by correlation and multivariate analysis. The analysis of variance was highly significant for 15 physiological, biochemical and yield traits, which revealed the presence of genetic variability among the entries. Correlation analysis revealed a significant positive association between phenol and bulb yield whereas; flavanoids are strongly associated with antioxidant activity. Multivariate analysis grouped the genotypes into three clusters. Highest inter cluster distance was recorded between cluster II and III whereas, lowest between cluster I and III. In cluster I, all five entries perform outstandingly for parameters viz. chlorophyll, phenol, pyruvic acid, bulb size and yield (42-54 Tha-1). Out of the 16 genotypes of cluster II, about 6 entries recorded with lower yield (< 30 Tha-1) and poor performance while, remaining found better for biochemical traits. The yield performance of 12 genotypes of cluster III is in the range of 42-52 Tha-1. Thus the entries from cluster I namely, KH-M-1, KH-M-2 and W 344 may be selected as parents in future onion breeding program for developing superior onion variety.
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