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随着分子生物学的发展,已有多个水稻(Oryza sativa)产量相关基因被相继克隆,其中直立穗型基因DEP1在我国粳稻育种得到了广泛应用,本文总结了前人关于DEP1的研究结果,展望了未来的发展前景.DEP1编码的G蛋白γ亚基的富含半胱氨酸区域缺失突变增强了G蛋白信号的传递,提高了分生组织活性,增加枝梗数和每穗粒数,提高氮素利用效率,从而提高水稻的单株产量潜力.同时,穗型直立使水稻具有良好的群体结构和抗倒伏能力,从而具有较高的群体物质生产能力.因此,继矮化育种和杂种优势利用后,以直立穗型基因DEP1为基础的株型改良将可能实现水稻产量的第三次飞跃.
With the development of molecular biology, several genes related to the yield of Oryza sativa have been successively cloned. Among them, the erect panicle gene DEP1 has been widely used in japonica rice breeding in China. This paper summarizes the previous results of DEP1, The prospects for the future are also prospected.The deletion mutation of cysteine rich domain of G protein gamma subunit of DEP1 enhances the transfer of G protein signal and improves the meristem activity and the number of branches and grains per spike Nitrogen utilization efficiency, so as to improve the yield per plant of rice.At the same time, the erect panicle made rice have a good population structure and lodging resistance, which has a higher population material production capacity.Therefore, following the dwarf breeding and heterosis After utilization, the plant type improvement based on the erect panicle gene DEP1 will likely achieve a third leap in rice yield.