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利用 RAPD标记和 UPGMA聚类分析 ,对我国 2 3个省市的 172份白菜型油菜资源进行了遗传多样性分析。 4 3个随机引物扩增出 2 4 8条多态性带。聚类分析表明 ,我国白菜型油菜分为 15个类群 ,其中 ,6个类群为北方小油菜 ,8个类群为南方油白菜 ,及 1个混合类群。我国白菜型油菜的遗传多样性是非常丰富的 ;北方小油菜品种之间的遗传差异很大 ,春油菜的遗传多样性水平明显高于冬油菜 ;南方油白菜的遗传变异类型很多 ,而南方小白菜与其它类型的白菜型油菜关系密切。北方小油菜的遗传多样性与地理分布密切相关 ,而南方油白菜与地理分布具有一定的相关。在北方小油菜中 ,来自青海、甘肃和新疆的地方品种的遗传变异较大 ,比其它地方品种表现出更高的遗传多样性水平 ;而在南方油白菜中 ,来自云南、贵州和湖北省的地方品种的变异类型较多 ,比其它地方品种表现出更丰富的遗传多样性
Using RAPD markers and UPGMA cluster analysis, genetic diversity of 172 Chinese cabbage rape resources in 23 provinces in China was analyzed. Four 3 random primers amplified 2488 polymorphic bands. Cluster analysis showed that the Chinese cabbage rape is divided into 15 groups, of which 6 are North Rape, 8 are Southern Chinese cabbage, and 1 is mixed. The genetic diversity of Brassica campestris is very rich in China. The genetic differences among RAPD cultivars are very large. The genetic diversity of Rapeseed rapeseed is higher than that of winter rapeseed. There are many types of genetic variation in Brassica napus, Cabbage and other types of cabbage rape are closely related. The genetic diversity of N. canola is closely related to its geographical distribution, while P. soja has a certain correlation with its geographical distribution. In the genus Pekinensis, the genetic variation among the local cultivars from Qinghai, Gansu and Xinjiang was greater than that of other local cultivars, whereas in southern Chinese cabbage cultivars from Yunnan, Guizhou and Hubei provinces Varieties of landraces have more types of variation than those of other landraces, showing more abundant genetic diversity