Stability analysis of Katarni rice (Oryza sativa) derived lines under different sowing dates

Katarni is a non-basmati traditional aromatic rice (Oryza sativa L.) cultivar of Bhagalpur district Bihar. This weak strawed, traditionally tall type, late maturing and easily prone to lodging. Due photosensitive nature, it matures very only at the end November provide narrow window for sowing wheat in farmers’ filed. An experiment was conducted Bihar Agricultural University, Sabour, during 2018 2019 develop semi-dwarf early lines derived from crossing with 3 high yielding cultivars were advanced F5 generation. In this study, 54 F6 generation studied on basis 14 morphological traits yield stability analysed 4 environments. The environments created by different dates across two years (2018 2019) single location Sabour. Significant variability found among genotypes four principal components (PC) identified, out which contributed 98.9% total variation. Six breeding entries be significantly superior over parental checks grain yield. Five identified as highly stable GGE AMMI analysis. All constituted mega first one shared best set Katarni-derived lines. promising higher performance can further evaluated under multi-location testing varietal release.