Vol. 11, Issue 7 (2022)

Author(s):
Kirti Singh, Alok Kumar Singh, Akrati Dev, DK Dwivedi, NA Khan and Dr. SP Singh

Abstract:
The investigation was carried out at Student Instructional Farm of A.N.D. University of Agriculture and Technology, Kumarganj, Ayodhya (U.P) India during the Kharif season 2019-20 and 2020-21. D2 analysis was studied for yield and its component characters in fifty mutant Kalanamak rice lines with one untreated control. The objective to study the effect of submergence stress on yield and yield attributes performance of mutant lines. All the fifty genotypes were evaluated for twelve yield and yield attributing characters using Mahalanobis D2 statistics. Divergence analysis grouped these genotypes in to seven clusters. Cluster adjusted II and VI maximum number of mutant lines (11) followed by cluster I (8), cluster VII (7) while cluster IV and V had cluster (5), cluster III had minimum number of mutant lines (3). Maximum intra cluster distance was observed in cluster VII (2.893) followed by cluster III (1.634) and cluster VI indicated that the genotypes grouped under these clusters were more diverse. Hence intercrossing of these clusters are suggested to obtain high yielding submergence tolerant rice varieties.