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Keywords = DFOT

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15 pages, 3090 KB  
Review
Advances on the Study of Diurnal Flower-Opening Times of Rice
by Mumei Wang, Minghao Chen, Zhen Huang, Hai Zhou and Zhenlan Liu
Int. J. Mol. Sci. 2023, 24(13), 10654; https://doi.org/10.3390/ijms241310654 - 26 Jun 2023
Cited by 11 | Viewed by 6312
Abstract
The principal goal of rice (Oryza sativa L.) breeding is to increase the yield. In the past, hybrid rice was mainly indica intra-subspecies hybrids, but its yield has been difficult to improve. The hybridization between the indica and japonica subspecies has stronger [...] Read more.
The principal goal of rice (Oryza sativa L.) breeding is to increase the yield. In the past, hybrid rice was mainly indica intra-subspecies hybrids, but its yield has been difficult to improve. The hybridization between the indica and japonica subspecies has stronger heterosis; the utilization of inter-subspecies heterosis is important for long-term improvement of rice yields. However, the different diurnal flower-opening times (DFOTs) between the indica and japonica subspecies seriously reduce the efficiency of cross-pollination and yield and increase the cost of indicajaponica hybrid rice seeds, which has become one of the main constraints for the development of indicajaponica hybrid rice breeding. The DFOT of plants is adapted to their growing environment and is also closely related to species stability and evolution. Herein, we review the structure and physiological basis of rice flower opening, the factors that affect DFOT, and the progress of cloning and characterization of DFOT genes in rice. We also analyze the problems in the study of DFOT and provide corresponding suggestions. Full article
(This article belongs to the Section Molecular Plant Sciences)
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