Assessment of Mungbean [Vigna radiata (L.) Wilczek] Genotypes for Genetic Divergence and Yellow Mosaic Disease (YMD) Resistance

Author: Sachin, Ravika, Rajesh Yadav, Amit and Navreet Kaur Rai

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Abstract

The experimental material consisting of 106 genotypes were evaluated for 14 yield and its attributing traits during Kharif 2021 to ascertain genetic divergence, path coefficients and the MYMV disease resistance. The maximum positive direct effect on seed yield per plant was observed by the biological yield per plant followed by harvest index, days to flowering, plant height and number of branches per plant. Number of clusters per plant and number of seeds per pod apart from their direct effect on seed yield exhibited a positive indirect effect via days to maturity, biological yield, harvest index and 100-seed weight. Therefore, these traits should be given higher priority in direct selection for high-yielding mungbean genotypes. No association between MYMV and yield attributing traits was observed. The hierarchical cluster analysis classified mungbean genotypes into ten discrete clusters indicating the presence of substantial genetic diversity in the evaluated genotypes. The most diverse genotypic pairs were Pusa Vishal and EC 393407 followed by VGG-2 & IPM 205-7, ML 1628 & EC 393407, IPM 409-4 & VGG-2, SML 1018 & VGG-2. These genotypes were found to have heterogenic origin and can results into most diverse heterotic combinations among all the genotypes studied. After the field screening of 106 genotypes using the infector row technique against MYMV 23 genotypes were found to be highly resistant, 42 resistant, 33 moderately susceptible, six susceptible and two were found highly susceptible. Based on yield and other morphological traits studied, the genotypes ML 1628, ML 2037, SML 1023, MH 521, MH 560, MH 565, IPM 312-394, IPM 410-3 and EC 581523 were found superior and exhibited sufficient diversity and can be utilized for future mungbean improvement programs.

Keywords

Genetic diversity, MYMV, Mungbean

Conclusion

From the findings of the present investigation, it could be concluded that the one hundred and six mungbean genotypes differed significantly for all yield and its attributing traits. Based on yield and its attributing traits along with MYMV screening, the genotypes viz., ML 1628, ML 2037, SML 1023, MH 521, MH 560, MH 565, IPM 312-394, IPM 410-3 and EC 581523 showed sufficient genetic diversity, contrasting traits and maximum resistance against MYMV among all the genotypes and these can be used in mungbean breeding programs for further improvement and resistance donor.

References

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How to cite this article

Sachin, Ravika, Rajesh Yadav, Amit and Navreet Kaur Rai (2023). Assessment of Mungbean [Vigna radiata (L.) Wilczek] Genotypes for Genetic Divergence and Yellow Mosaic Disease (YMD) Resistance. Biological Forum – An International Journal, 15(5): 399-405.