GENETIC DIVERSITY FOR YIELD AND ITS CONTRIBUTING TRAITS IN GUAR (Cyamopsis tetragonoloba L. Taub.)

PAWAN KUMAR¹*, JHABAR SINGH², GEETA VISHNOI³, D.K. GARG^4
1Department of Plant Breeding and Genetics, Swami Keshwanand Rajasthan Agricultural University, Bichhwal, Bikaner, Rajasthan, 334006
²Division of Statistics, Rajasthan Agricultural Research Institute, Sri Karan Narendra Agriculture University, Jobner, Jaipur, Rajasthan, 302018
³Department of Plant Breeding and Genetics, Swami Keshwanand Rajasthan Agricultural University, Bichhwal, Bikaner, Rajasthan, 334006
⁴Department of Plant Breeding and Genetics, Swami Keshwanand Rajasthan Agricultural University, Bichhwal, Bikaner, Rajasthan, 334006
* Corresponding Author : rameshr1005@gmail.com

Received : 28-04-2017     Accepted : 17-05-2017     Published : 28-05-2017
Volume : 9     Issue : 5       Pages : 275 - 277
Genetics 9.5 (2017):275-277

Keywords : Cluster bean, D2 technique, Genetic divergence, Cluster
Conflict of Interest : None declared
Acknowledgements/Funding : The author is grateful to major advisor Dr D.K. Garg, Professor, 1Department of Plant Breeding and Genetics, Swami Keshwanand Rajasthan Agricultural University, Bichhwal, Bikaner, Rajasthan, 334006
Author Contribution : All author equally contributed

A set of thirty genotype of cluster bean were studied for genetic divergence analysis utilizing Mahalanobis D2 technique. The analysis of data revealed that significant difference was observed among the genotypes for all the traits. Based on the genetic distance (D2 value), the thirty genotypes were grouped into 8 clusters. Of the 8 clusters, cluster I was largest with 14 genotype followed by cluster IV with 7 genotypes while Cluster II, Cluster III, Cluster V and Cluster VI had solitary genotype. Therefore, selection and intercrossing of genotypes involved in these clusters would be useful for inducing variability in the respective characters. Average intra and inter-cluster D2 values among 30 genotypes revealed that cluster I recorded maximum intra cluster distance followed by cluster II revealing thereby the existence of diverse genotypes in these clusters. Minimum inter-cluster distance was present between clusters I and cluster VII. The intra-cluster distance was maximum in cluster III followed by cluster II and cluster IV.

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