Homoeologous loci control the accumulation of seed glucosinolates in oilseed rape (Brassica napus)
Homoeologous loci control the accumulation of seed glucosinolates in oilseed rape (Brassica napus)
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DOI：
10.1139/g03-028
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发表时间：
2003-06-01
期刊：
影响因子：
3.1
通讯作者：
Lydiate, DJ
中科院分区：
文献类型：
--
作者：
Howell, PM;Sharpe, AG;Lydiate, DJ
使用两个品种间回交群体研究了油菜种子芥子油苷含量的遗传控制。绘制了来自甘蓝型油菜“Victor”x 甘蓝型油菜“Tapidor”杂交群体中分离的四个 QTL，合计占表型变异的 76%。其中三个基因座似乎也控制甘蓝型油菜'Bienvenu' x 'Tapidor'杂交中种子芥子油苷的积累，并占表型变异的86%。两个种群共有的三个 QTL 映射到欧洲油菜基因组的同源区域，表明种子芥子油苷的积累是由重复基因控制的。通过对齐几个研究小组生成的已发表的遗传图谱，可以扩展控制种子芥子油苷积累的 QTL 的比较分析。这一比较图谱表明，高芥子油苷品种通常在控制种子芥子油苷积累的一个或多个基因座处携带低芥子油苷等位基因。
The genetic control of seed glucosinolate content in oilseed rape was investigated using two intervarietal backcross populations. Four QTLs segregating in the population derived from a Brassica napus L. 'Victor' x Brassica napus L. 'Tapidor' cross, together accounting for 76% of the phenotypic variation, were mapped. Three of these loci also appeared to control the accumulation of seed glucosinolates in a Brassica napus L. 'Bienvenu' x 'Tapidor' cross, and accounted for 86% of the phenotypic variation. The three QTLs common to both populations mapped to homoeologous regions of the B. napus genome, suggesting that seed glucosinolate accumulation is controlled by duplicate genes. It was possible to extend the comparative analysis of QTLs controlling seed glucosinolate accumulation by aligning the published genetic maps generated by several research groups. This comparative mapping demonstrated that high-glucosinolate varieties often carry low-glucosinolate alleles at one or more of the loci controlling seed glucosinolate accumulation.