大豆产量是最复杂的数量性状，受多个微效基因控制，研究进展缓慢。目前定位的很多产量性状QTL是生育期性状，特别是大豆生育期基因E1位点，因此阐明调控大豆生育期的分子机理，排除大豆生育期基因的干扰，是研究大豆产量性状的关键科学问题。因此，本研究将在申请者前期生育期基因功能基因组方面的良好研究基础上，结合新一代全基因组测序技术，进一步克隆2个新的控制大豆生育期的QTL位点的编码基因FL1和FL2并鉴定基因功能，解析FL1和FL2基因与已克隆的生育期基因E1、E2、E3、E4、CO和FT之间的调控作用关系，阐明调控大豆生育期的分子机理，为在国际上率先开展在生育期基因型精细鉴定基础上，研究产量相关基因功能基因组学奠定理论基础；同时通过对已有大豆品种资源生育期基因型鉴定，筛选出适宜的大豆资源，为大豆分子育种提供新材料和新途径。

Soybean yield is a complicated quantitative trait and is controlled by many genes. Many genetically mapped yield QTLs were QTLs of maturity, especially in maturity E1 locus. Understanding the molecular mechanism underlying maturity regulation and excluding the disturbance of maturity are very critical to study the true yield components. Therefore, in this study, we will identify and characterize two novel maturity genes which controlled two flowering QTLs FL1 and FL2 by combining map-based cloning and next generation resequencing. The genetically regulative relationship of FL1 and FL2 with known maturity genes, E1, E2, E3, E4, CO and FT will be determined using these maturity gene isolines and transgenic lines. After this study, we will be able to understand more deeply of the molecular mechanism of photoperiod regulated flowering and maturity and facilitate the study of soybean yield more accurately. The gene-specific markers of mutation allele for maturity genes will add the value for molecular breeding.