Abstract
Key message
A novel QTL qGLF5 from Oryza rufipogon Griff. improves yield per plant and plant architecture in rice.
Abstract
Kernel size and plant architecture are critical agronomic traits that are key targets for improving crop yield. From the single-segment substitution lines of Oryza rufipogon Griff. in the indica cultivar Huajingxian74 (HJX74) background, we identified a novel quantitative trait locus (QTL), named qGLF5, which improves kernel shape, plant architecture, and yield per plant in rice. Compared with the control HJX74, the plant height, panicles per plant, panicle length, primary branches per panicle, secondary branches per panicle, and kernels per plant of the near-isogenic line-qGLF5 (NIL-qGLF5) are significantly increased. NIL-qGLF5 has long and narrow kernels by regulating cell number, cell length and width in the spikelet hulls. Yield per plant of NIL-qGLF5 is increased by 35.02% compared with that of HJX74. In addition, qGLF5 significantly improves yield per plant and plant architecture of NIL-gw5 and NIL-GW7. These results indicate that qGLF5 might be beneficial for improving plant architecture and kernel yield in rice breeding by molecular design.
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Funding
This research was supported by the Natural Science Foundation of Guangdong Province (2023A1515012083), the National Natural Science Foundation of China (32201742), the Science and Technology Planning Project of Guangzhou (2023A04J1962), the double first-class discipline promotion project (2021B10564001).
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YJ Wang and XY Liang conducted most of the experiments. GY Gong, HY Zhao, ZW Zheng, CH Wang, HT Zhu, and JY Huang took part in the experiments. Z Li, SH Bu, and GF Liu: Data analysis, review, and editing. GQ Zhang: Conceptualization, resources, review, and editing; ZP Liu and SK Wang: Conceptualization, project administration, data analysis, resources, supervision, writing, review, and editing.
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Wang, Y., Liang, X., Gong, G. et al. qGLF5 from Oryza rufipogon Griff. improves kernel shape, plant architecture, and yield in rice. Theor Appl Genet 136, 225 (2023). https://doi.org/10.1007/s00122-023-04478-9
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DOI: https://doi.org/10.1007/s00122-023-04478-9