Vol. 12, Issue 12 (2023)

Author(s):
SS Misal, MG Palshetkar, SV Sawardekar, AV Mane, BD Shinde, ST Burhade, OK Chaughule and PS Shinde

Abstract:
The study titled "Genetic diversity study in M₄ mutant lines in Pigeon pea (Cajanus cajan L. Millsp.)" was carried out during the kharif season of 2022 at the Research and Education farm within the Department of Agriculture Botany, College of Agriculture, Dapoli. In this study, 60 mutant lines and 3 check samples of pigeon pea underwent analysis for 14 distinct characteristics using an Augmented Design approach. These mutants and checks were categorized into 7 clusters, with Cluster I demonstrating the highest count of mutants (34) and Clusters IV, V, VI, and VII containing a solitary mutant each. Notably, Clusters II and VII displayed the greatest average inter-cluster distance of 163.76, succeeded by the distance between Clusters II and V, which measured 152.79. Cluster II exhibited the highest intra-cluster distance (38.56), followed by Cluster III (37.09) and Cluster I (33.74). The most significant genetic divergence was evident within Cluster VII. The study's outcomes suggest that mutants such as T₁ (77) 3-3, T₂ (10)8-1, T₃ (6) 16-11, and T₇ (2) 2-2 found prominent for future varietal enhancement purposes.