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Rice ripening rate is one of important yield component. The contribution to ripening rate was tested by removing the leaves after heading time. In addition, the ripening characteristics under high temperature condition were investigated in temperature gradient field chamber (TGFC). The ripening rate was dropped from 95.3% to 16.9% by removing leaves after heading. It means that the photosynthesis of leaves after heading is most great contributor on rice ripening. However, under high temperature, rice ripening rate was increased by infertility, but the contribution of leaves photosynthesis after heading was decreased. This information will be helpful to understand rice yield in future climate condition.
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Hyundong et al. (2019) studied this question.
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