Vol. 12, Issue 9 (2023)

Author(s):
Chandrakala, RE Ekka, SK Sinha and Ravishankar

Abstract:
The existence of genetic diversity among the 85 genotypes of pigeonpea was examined by employing Mahalanobis D²-statistics. The genotypes were a grouped into seven clusters. The highest number of genotypes appeared in cluster I which possessed 50 genotypes namely RP-67, RP-70, RP-110, RP-64, RP-20, RP-66, RP-55, RP-19, RP-116, RP-109, RP-124, RP-102, RP-44, RP-54, RP-60, RP-56, RP-43, RP-32, RP-74, RP-127, RP-118, RP-122, RP-167, RP-48, RP-115, RP-152, RP-24, RP-164, RP-45, RP-85, RP-72, RP-16, RP-140, RP-141, RP-62, RP-131, RP-101, RP-91, RP-145, RP-73, RP-106, RP-79, RP-144, RP-92, RP-163, RP-27, RP-105, RP-146, RP-84, RP-100 and RP-150. The second highest number of genotypes found in cluster II which was comprised of 15 genotypes namely, RP-35, RP-46, RP-53, RP-38, RP-107, RP-36, RP-137, RP-37, RP-111, RP-149, RP-89, RP-80, RP-4, RP-158 and RP-63. Cluster III comprised of 11 genotypes viz; RP-112, RP-166, RP-165, RP-108, RP-126, RP-15, RP-76, RP-78, RP-75, RP-143 and RP-42. The lowest genotypes were found in cluster V (Asha), VI (RP-159), and VII (Rajeevlochan). They all possessed only one genotype. Genetics divergence analysis revealed existence of considerable diversity in pigeonpea germplasm accessions. The genotypes belonging to cluster V, VI and VIII. On the basis of cluster wise mean yield performance it was noted that accessions viz., Rajeevlochan, RP-159 and Asha may be taken in to be consideration in future breeding programme in pigeonpea genotypes.