Evaluation of yield, yield components, and agronomic traits in BC2F2 population of soft-cooked rice with aromatic germplasm
Keywords:
yield, rice improvement, aromatic trait, backcross, Oryza sativa L.Abstract
The objective of this study was to evaluate the yield, yield components, and agronomic traits of 10 BC2F2 populations of soft-cooked rice with aromatic germplasm compared with RJ22 (non-aromatic rice) and Pathum Thani1 (aromatic rice) varieties. The experiment was conducted in a randomized complete block design with three replications at the Ruamjai Pattana Kwamroo Research Station, Pathum Thani, Thailand, during off-season rice planting 2023/2024. The results indicated that yield, yield components, and agronomic traits showed statistically significant differences, except for plant height and 1,000-grain weight. The RJP19No.3-3 and RJP41No.7-2 lines had the highest yields (1,366 and 1,297 kg/rai, respectively), which were not significantly different from RJ22 but were better than the Pathum Thani1 rice variety. Furthermore, these lines showed no significant differences in yield components and agronomic traits compared to either of the compared varieties. Therefore, these promising lines will be evaluated in the target growing areas in the future.
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