Abstract
AbstractPreharvest sprouting (PHS) remains a severe agricultural problem in rice and other crops. This study investigated the exact effect of Rc gene on PHS resistance along with seed and milled rice quality using two sets of near‐isogenic line‐derived populations, and showed the advantages of the Rc gene over other dormancy‐associated genes in protecting against PHS. Rc gene has a significant effect on PHS resistance, and Rc‐controlled dormancy does not negatively affect next agricultural production cycle. Importantly, Rc has a completely dominant maternal effect on PHS resistance, which confers an advantage to hybrid rice over inbred rice, and the effect fails to be counteracted by GA application in hybrid seed production. Moreover, Rc gene retains the same milled rice qualities of brown‐pericarp rice as that of white‐pericarp rice, and the brown‐pericarp rice possesses a higher antioxidative capacity than the white‐pericarp rice. Thus, wide application of the Rc gene would not only protect against PHS, but would also enhance the production of naturally occurring antioxidants that could make a significant contribution to human health.
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