Genetic variability, correlation and path analysis studies for yield traits in stable mutant lines of black aromatic rice of Manipur Usha M.1,*, Khoyumthem Pramesh1, Singh K. Noren2, Sinha Bireswar3, Singh Gopimohan4 1Department of Genetics and Plant Breeding, College of Agriculture, Central Agricultural University, Imphal, Manipur, India, 795004 2School of Crop Improvement, CPGS, CAU, Barapani 3Department of Plant Pathology, College of Agriculture, Central Agricultural University, Imphal, Manipur, India, 795004 4Department of Basic Sciences, College of Agriculture, Central Agricultural University, Imphal, Manipur, India, 795004 *E-Mail: mojjada.usha97@gmail.com
Online Published on 18 April, 2024. Abstract The study involved assessment of genetic variability and trait association of seed yield and its component traits in 20 EMS-derived stable mutant lines of black aromatic rice. The traits grain yield / plant, harvest index, effective tillers and biological yield/ plant recorded maximum GCV and PCV. Heritability estimates ranged from 67 percent for total number of tillers/ plant to 99 percent for days to 50 percent flowering. The trait grain yield per plant revealed high heritability (>80%) coupled with high advance in genetics (>50%). The traits fertile spikelets per panicle, effective tillers/ plant, biological yield, panicle length, and plant height were significantly and positively correlated with grain yield. The path analysis revealed maximum positive direct effects of fertile spikelets per panicle, harvest index, biological yield, grain length and effective tillers on grain yield indicating the selection of these traits for efficient crop improvement. Top Keywords Ethyl Methane Sulphonate, Black aromatic rice, Variability, Correlation, Path analysis. Top |