论文部分内容阅读
水稻准确地感知外部环境信号,通过内部复杂的基因网络做出反应,在一年中最适合的时候开花繁殖。与长日促进长日模式植物拟南芥开花相反,短日促进短日模式植物水稻开花。通过对水稻和拟南芥的开花期调控机理的对比分析,发现水稻和拟南芥有着一些相对保守的开花期控制基因,其调控机理也是相似的。另外,水稻也有一些独特的开花期控制基因和开花途径。本文着重从光周期对水稻开花期的调控途径和作用机理角度进行了阐述,并对水稻开花期的自然变异与其育种应用、生物钟关联基因、光中断现象和临界日长现象以及开花期与产量的关系进行了总结。
Rice accurately senses the signals of the external environment, reacts through an in-house complex network of genes, and blooms at the most suitable times of the year. In contrast to long days promoting flowering of Arabidopsis thaliana, a long day pattern, short days promote the flowering of plant rice in the short day pattern. Through the comparative analysis of the regulatory mechanisms at the flowering stage between rice and Arabidopsis thaliana, some relatively conservative flowering control genes were found in rice and Arabidopsis thaliana, and their regulatory mechanisms were also similar. In addition, rice also has some unique flowering-controlling genes and flowering pathways. In this paper, we focus on the photoperiod of regulating and controlling the flowering stage of rice and the mechanism of action. The natural variation of flowering stage and its breeding application, the gene of circadian clock, the phenomenon of light interruption and the phenomenon of critical day length, the flowering and yield The relationship is summarized.