The production and productivity of Indian mustard is not as sufficient as it can fulfil the current demand of edible oils of the country. This regard, there is an urgent need of high productive varieties of Indian mustard. Availability of sufficient genetic diversity is the basic necessity of any breeding programme for the improvement in desirable traits. The present investigation was carried out at Students Instructional Farm of Acharya Narendra Deva University of Agriculture and Technology, Kumarganj, Ayodhya consisting of sixty Indian mustard genotypes including three checks sown in Augmented Block Design during rabi 2021-2022 to study the diversity present among Indian mustard genotypes for seed yield and its component traits. The sixty genotypes of Indian mustard were grouped into six clusters. Cluster I and IV highest genotypes i.e., 13 each while lowest genotypes were noted in cluster III having 6 genotypes. The average inter cluster D2 values indicated that the most diverse groups were III & II and cluster III & I. The genotypes from the most diverse clusters can be used as donors for rewarding the trait improvement.

Brassica juncea, genetic diversity, inter cluster distance, Euclidean cluster analysis

The genotypes present in a single cluster show the relatedness in their genetic pattern, and the genotypes of various clusters show distinctness in their genetic pattern. In other words, the more the inter cluster value, the more will be diversity among the genotypes of that clusters. Hence, selection of genotypes from a single cluster while planning a breeding program, will not be of genetic worth. So, opting genotypes form distant clusters will be of eminent use in our breeding program. The average inter cluster D2 values indicated that the most diverse groups were III & II and cluster III & I. Hence, while planning a breeding programme for higher test weight and a greater number of secondary branches per plant, the genotypes from these diverse clusters can be incorporated as donors.

Tarkeshwar, Shiva Nath, Govind Mishra, Amit Kumar Chaudhary, Rishabh Gupta, Ajeet Kumar Gupta and S.C. Vimal (2022). Genetic Diversity Analysis in Indian Mustard [Brassica juncea (L.) Czern and Coss.] Genotypes. Biological Forum – An International Journal, 14(2): 1571-1574.