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 |
To study the genetic divergence in sesame (Sesamum indicum L.), a set of 96 advanced breeding lines obtained from different crosses was evaluated during kharif 2018 in a Randomized Complete Block Design in two replications. With the help of Mahalanobis's D2 statistics, the genotypes were grouped into15 clusters. Cluster I was the largest among all clusters comprising 68 lines, Cluster II (11), Cluster V (4) and Cluster XI (2). Remaining Clusters were solitary. The traits such as seed yield per plant (42.43%), 1000 seed weight (18.44%), number of capsules per plant (9.25), height to first capsule (6.82) have contributed maximum to genetic divergence. The highest intra cluster distance was recorded in cluster V (19.02) followed by cluster II (15.53) and cluster XI (14.19). The inter cluster distance was highest between the cluster VII and cluster XI (293.64) followed by cluster IV and cluster XI (288.46), cluster XI and cluster XV (283.22) suggesting wide diversity. The lowest inter cluster distance was observed between cluster VI and cluster XI (11.21). Based on cluster means it can be concluded that line DS-188 is very earliest to mature. The line DS-151 has high mean value for plant height and number of branches per plant. The lines DS-187, DS-192 and DS-158, DS-193 can be used to transfer number of capsules, capsule length and seed yield per plant, respectively. The line DS-191 and DS-180 for used for improving thousand seed weight and oil content respectively. By using diversity study we observed that the advanced breeding line DS-158 and DS-151 showing higher D2 values so they are highly diverse can be used in crossing programme to get high heterosis and can obtain good recombinants from them.
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