Neha Jha, Pooran Chand, L.K. Gangwar, S.K. Singh, Atar Singh, Mukesh Kumar and Vaishali Singh
Abstract
The present investigation entitledâ In vivo Evaluation of genetic variability associated traits in advance hybrids of rice for salt stress in different planting conditionsâ was conducted at Terrace of Phytotron lab of Genetics and Plant Breeding, SVPUAT, Meerut Uttar Pradesh during kharif crop season 2024. The study aimed to evaluate the extent of genetic variation present among the hybrids and the parents of rice for yield and its contributing traits for salt Stress. The experiment followed a complete randomized design (CRD) with three replications. The experiment consisted of Controlled and saline (8EC) conditions. PCV was greater than GCV suggesting environmental influence additive gene action. The results underlined the potential of exploiting genetic variability for improving yield and accelerating genetic gains in mustard breeding programs. High heritability accompanied by high genetic advance as percent mean was recorded for traits including biological yield, grain yield per plant, spikelets per panicle and test weight across control, and treated environments. This combination of parameters points to the predominance of additive gene action in these traits, indicating that direct phenotypic selection would be efficient for genetic improvement. Traits with moderate to high heritability and genetic advance, such as tillers per plant, flag leaf area, and harvest index, further reinforce their suitability as selection criteria in breeding programs.