油菜角果是重要的"源"和"库"器官，对油菜籽粒生长起到重要作用。前期研究发现油菜A9连锁群上存在一个角果长度和千粒重主效QTL重叠的区间。本项目申请拟通过基因组重测序，利用QTL-seq的方法，精细定位该QTL并克隆角果长度基因，分析该基因是否同时也控制千粒重性状。该研究的开展不仅将在分子水平上阐明角果长度和千粒重的相互关系，而且为分子育种增加油菜产量提供基因资源。

Silique plays important roles in seed development in rapeseed as photosynthesis source and sink organ. A major QTL cluster for silique length and seed weight was detected in A9 chromosome of rapeseed in previous studies. In this proposal, the method of QTL-seq will be employed to fine map QTL for silique length in combination with genome resquencing, and the function of candidate gene will be identified. This study will be of interest for illuminating the relationship between silique length and seed weight, and for providing gene source for molecular breeding in rapeseed.