STUDIES ON GENETIC PARAMETERS FOR YIELD AND YIELD ATTRIBUTING TRAITS IN RICE (ORYZA SATIVA L.)

Rice (Oryza sativa L.) is a staple crop globally, particularly in India, where it plays a vital role in food security.This study aimed to evaluate genetic variability, heritability, and genetic advance for twelve yield-related traits across six rice parent lines and their F1, F2, and F3 generations.The experiment was conducted during the kharif season of 2022 at the Research cum Instructional Farm, Indira Gandhi Krishi Vishwavidyalaya, Raipur, Chhattisgarh.Several important crosses demonstrated high heritability and genetic advance, indicating strong genetic control and potential for selection.For instance, Rajeshwari x IC0491194 exhibited high heritability and genetic advance for traits like plant height and seed yield per plant, making it a strong candidate for yield improvement.Similarly, Mahamaya x IC0558317 showed high heritability and genetic advance for days to 50% flowering (87.5%, 15.54%) and tiller number (54.53%), highlighting its promise for enhancing early maturity and productivity.Furthermore, IGKV R 1244 x IC0496940 demonstrated high potential for improving filled grains per panicle (96.2%, 40.81%) and 100 seed weight (99.6%, 33.12%).These crosses offer significant opportunities for breeding highyielding rice varieties.This study contributes valuable insights to rice breeding programs, emphasizing the importance of selecting traits with high heritability and genetic advance to enhance productivity and sustainability in rice cultivation.