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International Journal of Applied Agricultural & Horticultural Sciences
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DOI Prefix : 10.37322
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Vol. 9 (2) : March-April 2018 issue
Green Farming Vol. 9 (2) : 231-234 ; March-April, 2018
Genetic divergence studies in mungbean (Vigna radiata L. Wilczek) genotypes
NAVEEN KUMAR MARKAM1*,  S.K. NAIR2,  ISHU KUMAR KHUTE3  and  PREETI PAINKRA4
Department of Genetics and Plant Breeding, Faculty of Agriculture, Indira Gandhi Krishi Vishwavidyalaya, Raipur - 492 012 (Chhattisgarh)
Designation :  
1,4Ph.D. Scholar *(navi88gpb@gmail.com),  2Sr. Scientist,  3Technical Assistant
Subject : Crop Genetics and Plant Breeding
Paper No. : P-7183
Total Pages : 4
Received : 21 February 2018
Revised accepted : 03 March 2018
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Citation :

NAVEEN KUMAR MARKAM, S.K. NAIR, ISHU KUMAR KHUTE and PREETI PAINKRA. 2018. Genetic divergence studies in mungbean (Vigna radiata L. Wilczek) genotypes. Green Farming  Vol. 9 (2) : 231-234  ;  March-April, 2018

ABSTRACT
The present study was undertaken to provide information on the nature and magnitude of genetic divergence among 50 genotypes of mungbean for yield traits by using Mahalanobis D2 statistics. The 50 genotypes could be grouped in three clusters. Cluster II (3.648) showed maximum intra-cluster distance consisting of 6 genotypes followed by cluster I (2.981) consisting of 27 genotypes, while the highest inter-cluster distance was observed between cluster I and cluster II (4.904) followed by cluster II and cluster III (3.978). The lowest intra cluster distance was observed for cluster III (2.425) consisting of 17 genotypes. Moreover, the lowest inter cluster distance was recorded between I and cluster III (2.952). Cluster II recorded highest means for number of branches plant-1, number of pods plant-1, Pod length, number of clusters plant-1, 100 seed weight, seed yield plant-1 and Biological yield plant-1. The per cent contribution towards genetic diversity was highest for days to 50% flowering (75.59) followed by protein % in seed (13.39), plant height (3.27), 100 seed weight (2.20), days to maturity (1.55) and pod length (1.39). From the divergence analysis, it may be concluded that the genotypes belonging to different clusters separated by high estimated statistical distance may be used in the hybridization programme for developing high yielding mungbean varieties. Six genotypes belonging to cluster II viz., LGG -460, HUM -16, IGKM -08, NVL -641, LGG -544 and RM 03-71 could be identified as most useful in the future breeding programme.
Key words :
D2 statistics, Genetic divergence, Inter and Intra cluster distance, Mungbean.