Nature of gene action for yield and its components in mungbean (Vigna radiata)

N PATHAK; M N SINGH; M K MISHRA; S K SAROJ

doi:10.56093/ijas.v85i4.47915

Authors

N PATHAK Senior Research Fellow, Krishi Vigyan Kendra, Jawaharlal Nehru Krishi Vishwa Vidhyalaya, Tikamgarh, Madhya Pradesh 472 001
M N SINGH Professor, Department of Genetics & Plant Breeding, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi 221 005
M K MISHRA Technical Assistant, AICRPSESAME, Department of Plant Breeding and Genetics, College of Agriculture, Jawaharlal Nehru Krishi Vishwa Vidhyalaya, Tikamgarh, Madhya Pradesh 472 001
S K SAROJ Research Scholar, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi 221 005

https://doi.org/10.56093/ijas.v85i4.47915

Keywords:

Epistasis, Gene effects, Joint scaling test, Mungbean, Vigna radiata, Yield

Abstract

The assessment of gene effect for some yield characters and detection of epistasis in mungbean [Vigna radiata (L.) Wilczek] was studied in four crosses involving five parents through generation mean analysis during kharif 2012 at Banaras Hindu University (BHU), Varanasi, UP. Six populations, viz. P₁, P₂, F₁, F₂, B₁ and B₂ of four crosses involving five parents were evaluated. The nature and magnitude of gene effects for yield and its components in mungbean was studied using six parameter model of generation mean analysis. The presence of epistasis was detected by joint scaling test and inadequacy of additive-dominance model was established except seeds/pod. Additive (d), dominance (h) gene effects along with one or more type of non-allelic interactions (i, j, l) contributed significantly
towards the inheritance of all the quantitative characters in majority of the crosses. Duplicate type of epistasis and
predominant dominance effects was also prevalent in most of the cases except in days to maturity in HUM 8 x ML 713 cross. Thus, postponement of selection in later generations may be suggested to obtain transgressive segregants for improvement of mungbean populations.

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