摘要
用8个随机引物(10bp)对2个紫菜薹自交系的3个单株和4个大白菜自交系的4个单株的染色体组DNA进行PCR扩增,共有40条带分离清晰、明亮,其中引条带在7个单株中表现出差异,可作为遗传标记(RAPD标记)。4个大白菜自交系之间的平均差异条带数为12.3,2个紫菜薹自交系之间为9.5,大白菜与紫菜薹之间平均有15.5条带的差异。用7个引物在93W05-7(紫菜薹)和93W58-5(大白菜)之间检测出对个RAPD标记。从同一自交系的不同单株抽提的染色体组DNA扩增出较一致的DNA谱带,而不同自交系间扩增出的DNA谱带差异很大,这表明此方法也可以象RFLP一样,用于大白菜和紫菜薹的分子标记。
The genomic DNA isolated from four inbred lines of Chinese cabbage (Brassica campestris L. ssp. pekinenese) and two inbred lines of purple cai-tai(B.campestris L. var. purpurea) was used in this study to generate the RAPD markers by eight arbitrary 10-mer primers. The amplified fragment size ranged from 300 to 2500 bp. Fourty fragments showed clear and robust bands on the gel. Among them, 31 bands amplified by 7 primers provided polymorphism between 6 inbred lines, and could be used as molecular markers. By using 7 primers, it assayed 21 RAPD markers between 93W05-7 (purple cai-tai) and 94W58-5 (Chinese cabbage). The average number of polymorphic markers between Chinese cabbage and purple cai-tat was 15.5, but among them was 12.3 and 9.5respectively. The RAPDs of two individual plants from one inbred lines were very similiar.RAPD markers like RFLP markers could also be used as molecular markers in Brassica.
出处
《园艺学报》
CAS
CSCD
北大核心
1995年第3期256-262,共7页
Acta Horticulturae Sinica
基金
国家自然科学基金农业部
"蔬菜生物学重点开放实验室"资助