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 of thirty eight maintainer lines was studied through Mohalanobis’s D2and principal component analysis for eleven characters in a randomized complete block design (RCBD) in Kharif 2014 at Rice section farm, Agriculture Research Institute, Rajendranagar, Hyderabad. Genotypes were grouped into five different clusters. Cluster IV comprised maximum number of genotypes (thirteen) followed by cluster V and III. The inter-cluster distance was maximum between clusters I and V (35.700) indicating wide genetic diversity between these two clusters followed by the distance between cluster I and IV (30.090), cluster I and cluster III (26.530) and cluster II and cluster V (22.800). The minimum inter-cluster distance was observed between cluster III and cluster IV (3.600) followed by cluster IV and cluster V (5.920) and cluster V and cluster III (9.450) indicating that the genotypes of these clusters were genetically close. The intra cluster distance in the entire five clusters was more or less low indicated the genotypes within the same cluster were closely related. Among the characters number of panicles/m2, number of grains per panicle, number of effective tillers and grain yield per plot contributed most for divergence in the studied genotypes. Therefore, these characters may be given importance during hybridization programme.
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