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Department of Genetics and Plant Breeding, S.V. Agricultural College, ANGRAU, Tirupati-517 502.
The field experiment was conducted during the Rabi 2024–2025 season at the Agricultural Research Station, Nellore, India to study the genetic variability, heritability, and genetic advance for lodging resistance and yield-related traits in a panel of 100 rice genotypes. Eleven key traits were evaluated viz., plant height, number of tillers per plant, culm thickness, culm diameter, panicle length, panicle weight, number of grains per panicle, grain yield per plant, section modulus, bending stress, and bending moment. Statistical analysis revealed significant genetic variation among the genotypes for all the studied traits. Traits such as panicle weight, number of grains per panicle, grain yield, section modulus, bending stress, and bending moment exhibited high genotypic and phenotypic coefficients of variation, indicating a broad range of variability. High heritability coupled with high genetic advance were observed for all the traits under study, suggesting the predominance of additive gene effects and the potential for effective improvement through pedigree method. These results highlight the importance of prioritizing high-heritability traits to accelerate genetic gains in breeding programs focused on enhancing lodging resistance and yield performance in rice.
KEYWORDS: Lodging resistance, variability, genetic advance, Rice, Bending moment.