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Key message A novel QTL for grain number,GN4-1, was identified and fine-mapped to an~190-kb region on the long arm of rice chromosome 4. Abstract Rice grain yield is primarily determined by three components: number of panicles per plant, grain number per panicle and grain weight. Among these traits, grain number per panicle is the major contributor to grain yield formation and is a crucial trait...
Background Rice plays an extremely important role in food safety because it feeds more than half of the world’s population. Rice grain yield depends on biomass and the harvest index. An important strategy to break through the rice grain yield ceiling is to increase the biological yield. Therefore, genes associated with organ size are important targets for rice breeding. Results We characterized...
Plant height is one of the determinants that influence rice plant architecture and grain yield. Identification of useful novel genes related to plant height is necessary for breeding high-yield rice. In this study, C33084, a backcross introgression line derived from a japonica cultivar (Balilla) as the recurrent parent and an indica cultivar (Dular) as the donor parent, was employed to characterize...
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