Legume Research
Web of Science
  • Year: 2026
  • Volume: 49
  • Issue: 1

Deciphering the Inter Allelic Interactions for Yield Components and Urdbean Leaf Crinkle Disease Resistance in Black Gram [Vigna mungo (L.) Hepper] using Generation Mean Analysis

  • Author:
  • M. Bala Barathi1, D. Ratna Babu1*
  • Total Page Count: 8
  • Page Number: 144 to 151

1Department of Genetics and Plant Breeding, Agricultural College, Acharya N.G. Ranga Agricultural University, Bapatla-522 101, Andhra Pradesh, India.

*Corresponding Author: D. Ratna Babu, Department of Genetics and Plant Breeding, Agricultural College, Acharya N.G. Ranga Agricultural University, Bapatla-522 101, Andhra Pradesh, India. Email: didlaratnababu@gmail.com

Abstract

Urdbean leaf crinkle disease (ULCD) caused by urdbean leaf crinkle virus (ULCV) is one of the destructive viral diseases for black gram cultivation. Development of resistant cultivars along with higher yield is the most efficient and cheapest way to alleviate the prevalence of ULCD. But for which understanding of inheritance of complex quantitative traits along with ULCD resistance is essential. Proper understanding of genetic architecture of complex traits can be obtained by using six-parameter model of generation mean analysis.

Four diverse parents (VBN 8, DKU 87, LBG 623 and LBG 787) together with their six F1s (obtained during rabi, 2021–22), six BC1s, six BC2s and six F2s (obtained during summer, 2022) were evaluated for yield components in kharif, 2022 and rabi, 202223 and for ULCD during rabi, 2022–23 and late rabi, 2022–23 at Agricultural College Farm, Bapatla, Andhra Pradesh for estimation of components of gene effects controlling various traits.

Additive-dominant model is inadequate for nine traits out of ten studied quantitative traits including ULCD except test weight. Dominant × Dominant [/] type of epistatic interaction, is predominant among the operating non-allelic interactions. Duplicate epistatic interaction in the inheritance is evident at least in few crosses for eight traits (Days to maturity, plant height, branches per plant, clusters per plant, pods per plant, pod length, seeds per pod and grain yield per plant).

Keywords

Duplicate epistasis, Generation mean analysis, Non-allelic interactions, ULCD