Assessment of genotype-environment interactions for identification of stable and high-performing Pearl Millet [Pennisetum glaucum (L.) R. Br.] hybrids
G.P. Jat
Department of Genetics and Plant Breeding, School of Agriculture, Suresh Gyan Vihar University Jaipur, India.
L. S. Dhayal *
Department of Genetics and Plant Breeding, School of Agriculture, Suresh Gyan Vihar University Jaipur, India.
A. S. Shekhawat
Department of Genetics and Plant Breeding, School of Agriculture, Suresh Gyan Vihar University Jaipur, India.
R. S. Sain
Department of Genetics and Plant Breeding, School of Agriculture, Suresh Gyan Vihar University Jaipur, India.
Indra Raj Yadav
Department of Soil Science, School of Agriculture, Suresh Gyan Vihar University Jaipur, India.
M. K. Jat
Department of Plant Pathology, School of Agriculture, Suresh Gyan Vihar University Jaipur, India.
*Author to whom correspondence should be addressed.
Abstract
The present investigation was conducted during Kharif 2024 at the Agricultural Farm, School of Agriculture, Suresh Gyan Vihar University, Jaipur. Fifteen hybrids were evaluated across three sowing environments created by different date of sowing—20th June (E1), 5th July (E2), and 20th July (E3)—using a randomized block design with three replications. The study aimed to assess genotype × environment (G×E) interactions, identify stable and high-performing hybrids, and categorize them based on adaptability.
The analysis of variance revealed highly significant differences among hybrids and environments for all traits, indicating wide genetic diversity and significant environmental influence. Pooled analysis confirmed significant G×E interactions for yield and related traits. Stability analysis using the Eberhart and Russell (1966) model showed that hybrids such as RHB 177, 86M90, and Shriram 8866 exhibited high mean performance, regression coefficients near unity, and non-significant deviation from regression, indicating average stability and wider adaptability. The study concludes that these hybrids are stable and suitable for general cultivation across varied environments of Rajasthan.
Keywords: Pearl millet, genotype × environment interaction, stability, regression coefficient, grain yield