ASSESSMENT OF GENETIC DIVERSITY IN MUNGBEAN [Vigna radiata L Wilczek] GENOTYPES

S.R. SHARMA¹*, D. SINGH², PAWAN KUMAR³, O.P. KHEDAR⁴, N. VARSHNAY^5
1Division of Plant Breeding and Genetics, Rajasthan Agricultural Research Institute, Durgapura, 302018, Sri Karan Narendra Agriculture University, Jobner, 303329 Rajasthan, India
²ICAR-Indian Agricultural Statistical Research Institute, New Delhi, 110012, India
³Division of Plant Breeding and Genetics, Rajasthan Agricultural Research Institute, Durgapura, 302018, Sri Karan Narendra Agriculture University, Jobner, 303329 Rajasthan, India
⁴Division of Plant Breeding and Genetics, Rajasthan Agricultural Research Institute, Durgapura, 302018, Sri Karan Narendra Agriculture University, Jobner, 303329 Rajasthan, India
⁵ICAR-Indian Agricultural Statistical Research Institute, New Delhi, 110012, India
* Corresponding Author : sheetalraj.sharma@gmail.com

Received : 12-07-2018     Accepted : 27-07-2018     Published : 30-07-2018
Volume : 10     Issue : 7       Pages : 471 - 474
Genetics 10.7 (2018):471-474

Keywords : Mungbean, Cluster analysis, Diversity analysis and Wilks statistics
Academic Editor : Parihar A. K., Singh Sarvjeet, Vishal Singh
Conflict of Interest : None declared
Acknowledgements/Funding : Author thankful to Rajasthan Agricultural Research Institute, Durgapura, 302018, Sri Karan Narendra Agriculture University, Jobner, 303329 Rajasthan, India
Author Contribution : All author equally contributed

Sixtyfour mungbean genotypes consisting breeding lines, advanced breeding lines and released varieties were evaluated to explore the extent of genetic diversity. Wilks (statistic) criterion was used to test the significant differences between the genotypes based on the pooled effect of all the characters. The genotypes under investigation demonstrated a wide range of diversity for considered traits. The cluster analysis through Tocher’s method distributed the genotypes into eight clusters. Cluster I was largest with maximum 29 genotypes, followed by Cluster III, II and V comprising 9, 8 and 8 genotypes, respectively. The maximum inter cluster D2 value (20.56) was recorded between cluster VII and VI, while the minimum D2 value (10.26) was found between cluster VIII and VII. The grain yield/plant was found to be maximum in cluster VI which indicated importance of this cluster in improvement of yield in mungbean. Among all the traits studied 100-seed weight contributed maximum to the diversity, followed by number of clusters/plant, days to flowering (50%) and days to maturity. In the present study, mixed response was observed as the genotypes originating from different eco-geographical regions were grouped together into different clusters as well as in same clusters. It is suggested that diverse parents should be used to produce desirable recombinants for developing new improved mungbean varieties.

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