Vol. 11, Issue 12 (2022)

Author(s):
Dr. Rajesh Kumar, Bansidhar, UK Singh, RK Mandal and VK Choudhary

Abstract:
The genetic divergence study was conducted to estimate the nature and magnitude of diversity in thirty aromatic rice accessions including fifteen improved varieties during kharif season, 2019 & 2020. The divergence analysis including Tocher’s, canonical (vector) and Euclidian methods indicated the presence of appreciable amount of genetic diversity in the material. The thirty aromatic rice genotypes were grouped into six clusters by both Tocher’s and Euclidian methods of divergence study. But the clusters of both methods were different on the basis of the genotypes and their numbers present in the cluster. The genetic parameters of all the characters have also been studied. The result obtained from different methods of divergence study was slightly differs from each other. The suitable genotypes for the different quantitative and qualitative characters have been drawn from the all three methods of divergence study. The most diverse parent combination for the component characters of grain yield have been identified on the basis of 3D diagram of PCA scores and Euclidian distance matrix, which were JGL 15336 x Tarori Basmati for effective tillers per plant, Badsabhog x Rajendra Kasturi for filled grain per panicle, JGL 15336 x Birsamati for grain weight per panicle and Gandhasala x Pusa Sugandha-3 for Leaf area index. These genotypes were found most suitable genotypes for the respective characters and can be used as potential donor for future breeding programmes.