Estimation of Genetic Parameters for Yield Traits in Greengram (Vigna radiata (L.) Wilczek) Mutants under EMS Mutagenesis of M3 Generation

Select Volume / Issue:

• Volume 13,Issue 2, Mar. 2026

Year:

2026

Type of Publication:

Article

Keywords:

Green Gram, Correlation, Genetic Advance and Heritability

Authors:

Rohini, V.; Naik, K. Srinivas; Dasyam, Deepika; Poda, Sudhakar

Journal:

IJRAS

Volume:

13

Number:

2

Pages:

14-22

Month:

March

ISSN:

2348-3997

Abstract:

The current study was carried out with mutants of greengram (WGG-42) genotype collected from from ICAR-CRIDA, Santoshnagar, Hyderabad and the work was done at the Center for Plant Molecular Biology at Osmania University in Hyderabad and the Department of Genetics and Plant Breeding at Acharya N.G. Ranga Agricultural University in Lam, Guntur, Andhra Pradesh. The aim of the study is to analyse genetic parameter for yield characters in M3 generation. The results showed the correlation analysis revealed that number of secondary branches per plant, number of clusters per plant, number of pods per plant, number of seeds per pod, and 100-seed weight exhibited strong positive associations with seed yield, indicating their direct contribution to productivity. The results also showed the estimates of heritability and genetic advance showed that plant height, number of primary and secondary branches per plant, number of pods per plant, number of seeds per plant, and seed yield per plant recorded high heritability coupled with high genetic advance, suggesting the predominance of additive gene action. These traits offer substantial scope for improvement through direct selection in mutant populations. In contrast, traits such as 100-seed weight and days to maturity exhibited moderate heritability with low to moderate genetic advance, implying the influence of non-additive gene effects and environmental factors, thereby requiring recurrent selection or hybridization strategies for effective improvement. The study confirmed that EMS-induced mutagenesis is an effective approach for generating genetic variability in green gram. The M₃ generation mutants displayed significant variability with promising heritable traits for yield enhancement.

Full text: IJRAS_1197_FINAL.pdf