Seed number per pod (SNPP) and seed weight (SW) are two components of seed yield in rapeseed (Brassica napus). Here, a natural population of rapeseed was employed for genome-wide association analysis for SNPP and SW across multi-years. A total of 101 and 77 SNPs significantly associated with SNPP and SW with the phenotypic variances (R²) ranging from 1.35 to 29.47% and from 0.78 to 34.58%, respectively. And 43 and 33 homologs of known genes from model plants were located in the 65 and 49 haplotype blocks (HBs) for SNPP and SW, respectively. Notably, we found 5 overlapping loci and 3 sets of loci with collinearity for both SNPP and SW, of which 4 overlapping loci harbored the haplotypes with the same direction of genetic effects on SNPP and SW, indicating high possibility to simultaneously improve SNPP and SW in rapeseed. Our findings revealed both overlapping and independent loci controlling seed number per pod and seed weight in rapeseed.

每荚种子数 (SNPP) 和种子重量 (SW) 是油菜籽（甘蓝型油菜）种子产量的两个组成部分。在这里，利用油菜籽的自然群体对 SNPP 和 SW 进行了多年的全基因组关联分析。共有101个和77个SNP与SNPP和SW显着相关，表型方差(R ² )分别为1.35%至29.47%和0.78%至34.58%。SNPP 和 SW 的 65 个和 49 个单倍型块 (HB) 中分别有 43 个和 33 个来自模式植物的已知基因的同源物。值得注意的是，我们发现SNPP和SW有5个重叠位点和3组共线性位点，其中4个重叠位点含有对SNPP和SW具有相同遗传效应方向的单倍型，表明在SNPP和SW中同时改善SNPP和SW的可能性很大。油菜籽。我们的研究结果揭示了油菜籽中控制每个豆荚种子数量和种子重量的重叠和独立基因座。