Journal of Environmental Biology

Evaluation and stability analysis for yield and related traits in rice under humid south-eastern plain zone of Rajasthan

M. Kumar¹*, Sandhya¹, P. Kumar² and K.M. Sharma³     

¹Department of Genetics and Plant Breeding, Agricultural University, Kota-324 001, India

²Division of Crop Improvement, ICAR-Central Institute for Arid Horticulture, Bikaner-334 006, India

³Department of Agronomy, Agriculture University, Kota-324 001, India

Received: 12 August 2024                   Revised: 30 November 2024                   Accepted: 14 February 2025

*Corresponding Author Email : manoj@aukota.org                     *ORCiD: https://orcid.org/0000-0002-2865-436X                     

Abstract

Aim: A total of 15 rice (Oryza sativa L.) varieties were evaluated in three different seasons representing different environments under Humid South-eastern Plain Zone in Rajasthan during kharif 2019, 2020 and 2021 to assess the stability of grain yield.

Methodology: Additive main effect and multiplicative interaction (AMMI) and stability model were employed to study the G×E interaction. ANOVA revealed significant G×E interaction and variety and environment effect.

Results: The mean grain yield varied among the varieties from 40.20 to 56.80 q ha^-1, with a general mean of 46.57q ha^-1. Variety MTU1010 was identified to have a higher mean grain yield than the general mean and was stable across the years. AMMI analysis revealed that the first two IPCA scores together explained 87.26 % of the total interaction variance.

Interpretation: Both linear and non-linear components contributed towards G×E interaction. Biplot graphical analysis showed variety DR46 exhibited the best overall yield performance. Varieties DR46 and NDR359 recorded a better performance in environments E1 and E3, while KARJATperformed well in E1 and E2 environments; hence, it could be identified for specific climatic conditions. These varieties could be utilized for direct cultivation as well as for the development of other cultivars.

Key words: AMMI analysis, G × E interaction, Rice, Stability

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