甘蓝细胞质雄性不育材料的分子鉴定

Molecular Identification of Cytoplasmic Male Sterile Lines in Cabbage

根据Genebank中orf224和orf138基因序列的保守区设计特异引物,对2个甘蓝不育材料PM、QM的mt DNA进行PCR扩增。试验结果表明,orf138特异引物对2个不育材料的mt DNA扩增出350 bp大小的清晰条带;不育材料的特异片段与萝卜Ogu CMS所具有的Ogu orf138基因同源度达92.55%,长度均为297 bp,因此,初步推断2个不育材料是Ogura胞质雄性不育类型。

We used the two male sterile lines PM and QM of cabbage as materials, and designed specific primers according to the conserved regions of orf224 and orf138 gene sequence in Genebank, then amplified their mtDNA by PCR. The results showed that, the specific primers of orf138 had amplified a distinct band with the size about 350 bp on both two materials, and the homologous degree was 92.55% between the two specific fragments and the Ogu orf138 gene of radish Ogu CMS, and the size of homologous fragments were both 297 bp. Therefore, we concluded that these two sterile materials were Ogura cytoplasmic male sterility type.