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首页> 外文期刊>African Journal of Agricultural Research >Different expression of S-locus cysteine-rich protein (SCR) alleles in self-incompatible and self-compatible Brassica napus breeding lines and cultivars: Can be SCR/SP11 used as a selectable marker in breeding?
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Different expression of S-locus cysteine-rich protein (SCR) alleles in self-incompatible and self-compatible Brassica napus breeding lines and cultivars: Can be SCR/SP11 used as a selectable marker in breeding?

机译：自交不亲和的甘蓝型油菜育种系和品种中S-基因座富半胱氨酸蛋白（SCR）等位基因的不同表达：SCR / SP11可以用作育种的选择标记吗？

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摘要

There are several approaches available for hybrid breeding in oil seed rape, Brassica napus, as cytoplasmic male sterility (CMS), genic male sterility (GMS), self-incompatibility (SI), and chemical hybridizing agens (CHA). In comparison with others, SI is regarded as one of the most valuable strategies in hybrid breeding. Unlike self-incompatible (SI) B. rapa and B. oleracea, two ancestor species, B. napus is naturally self-compatible (SC). However, occasionally SI also occurs in rapeseed cultivars. SI in Brassicaceae plants is sporophytically controlled by a single multi-allelic locus (S-locus), which contains at least three highly polymorphic genes expressed in the stigma (S locus glycoprotein, SLG and S receptor kinase, SRK) and in the pollen (SCR/SP11). In segregating population derived from crosses between DH SI lines and 00-quality donors we found two recessive alleles of a SCR class?II gene. We developed new primers for detection of unique cv. Tandem derived allele and this allele was successfully amplified in SI donor plants and SI plants after first cycle of crossing. Analyses of other accessions (SI donor different from cv. Tandem) and varieties did not show so clear pattern of segregation and different expression of both alleles does not correspond to phenotypic manifestation of self-incompatibility and we can assume that it is caused by the presence of repressor gene that does not lie on the S-locus.
机译：有几种方法可用于油菜，甘蓝型油菜的杂交育种，例如细胞质雄性不育（CMS），基因雄性不育（GMS），自交不亲和（CHA）和化学杂交。与其他相比，SI被认为是杂交育种中最有价值的策略之一。与自我不相容（SI）的油菜双歧杆菌和油菜双歧杆菌（B. oleracea）这两个祖先物种不同，油菜（B. napus）自然是自相容（SC）。但是，有时在油菜品种中也会出现SI。十字花科植物中的SI受到单个多等位基因座（S-locus）的分布控制，该基因座包含至少三个在柱头（S基因座糖蛋白，SLG和S受体激酶，SRK）和花粉中表达的高度多态性基因（ SCR / SP11）。在隔离源自DH SI系和00质量供体之间的杂交的种群中，我们发现了SCR II类基因的两个隐性等位基因。我们开发了用于检测独特简历的新引物。串联衍生的等位基因，并且该等位基因在第一个杂交周期后在SI供体植物和SI植物中成功扩增。对其他种质（SI供体不同于cv。Tandem）和变种的分析未显示出清晰的分离模式，并且两个等位基因的不同表达并不对应于自我不相容性的表型表现，我们可以假定这是由于存在不在S基因座上的阻遏基因的表达。

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