Harnessing parent-offspring regression analysis to develop high-yielding submergence tolerant lines of Oryza sativa L.

Given the urgency of rising sea levels and need to sustain food production, developing flood-tolerant crops is essential. The aim this study was assess genetic potential cross CO51x13-6 (NIL CO43Sub1) in BC2F4 BC2F5 generations using Parent Offspring regression analysis. Significant variation observed across a wide range traits both generations. distribution important traits, including plant height, number productive tillers per plant, panicle length, single yield, showed positively skewed platykurtic curve generations, indicating influence multiple genes. correlation coefficients were highly significant for all recorded study. with highest narrow sense heritability days fifty percent flowering, followed by stem diameter spikelet fertility, suggesting that these can be effectively utilized selecting superior genotypes early Keywords: Submergence, parent offspring regression, Skewness, kurtosis, intergenerational correlation, Rice