Genotype × Environment Interaction for Yield and Yield Determining Traits in Green Gram (Vigna radiata (L.) Wilczek)

Author: Amarnath Dabaria, Varsha Kumari, Shyam Singh Rajput, Priyanka Kumawat, Ram Kunwar, D.K. Gothwal, Bhuri Singh, R.P. Ghasoliya, D.K. Jajoria, Anju Nehra and Poonam Kumari

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Abstract

Twenty-five green gram (Vigna radiata) genotypes representing diversity in characters were assessed with 3 replications in Randomized Block Design (RBD). Environment wise data on each character for all the genotypes had been subjected to pooled analysis of variance and joint regression analysis was done for each genotype in each environment to assess the environment + (genotypes × environment) effects. The pooled analysis of variance showed highly significant differences among genotypes for all the characters. The environmental effects were highly significant for all the characters and genotype × environment (G × E) interactions were significant for all the characters except pods per plant. Analysis of variance for each character was done in each environment. The replication mean sum of squares was non-significant in all the three environments for all the characters. The significant difference between genotypes was observed for all the characters in each environment. As per environmental indices, E3 (-1.92) was most favorable and E1 (2.45) was least favorable for days to 50% flowering and days to maturity. Remaining characters, like plant height, branches per plant, clusters per plant, pods per cluster, pods per plant, pod length, seeds per pod, seed yield per plant and test weight the most favorable environment was E1 and least favorable environment was E3. The environment (linear) became significant for all the characters except clusters per plant. The genotypes × environment (linear) component were significant for days to 50% flowering, pods per cluster, seed yield per plant and test weight. Pooled deviation was significant for days to 50% flowering, days to maturity, plant height and clusters per plant.

Keywords

Green gram, Environment, Genotype × Environment interaction, Yield, Variance

Conclusion

Stability analysis in green gram was done to find the widely adapted genotypes in various environments where environment I was most suitable and environment III was least. The environmental effects were highly significant for all the characters and genotype x environment (G × E) interactions were also significant for most of the characters. This study was helpful in finding stable genotypes of green gram for yield and yield determining characters.

References

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How to cite this article

Amarnath Dabaria, Varsha Kumari, Shyam Singh Rajput, Priyanka Kumawat, Ram Kunwar, D.K. Gothwal, Bhuri Singh, R.P. Ghasoliya, D.K. Jajoria, Anju Nehra and Poonam Kumari (2022). Genotype × Environment Interaction for Yield and Yield Determining Traits in Green Gram (Vigna radiata (L.) Wilczek). Biological Forum – An International Journal, 14(4): 71-75.