摘要
利用28对稳定的SSR引物分析了20份玉米地方品种的遗传多样性，共检测到124个等位基因，平均每个位点4．43个，每对引物可以稳定检测到2～9个多态性片断，遗传相似系数为0．56～0．85。聚类分析将此材料划分为3个大群，其中来自山西地方品种划分在一个类群内，而来自河南的地方种质分布在3个类群中，多样性较高。据此结果，可对这些地方品种进行针对性的保存和改良利用。
Genetic diversity of 20 maize landraces was analyzed with 28 SSR markers. 124 alleles in all were detected and the average number of alleles was 4.43.2 - 9 polymorphic fragments were amplified stably by each SSR marker. Genetic dissimilarity coefficients ranged from 0.56 to 0.85. These maize germplasms could be clustered into 3 groups. The 10 maize landraces from Shanxi Province were clustered into one group. However, the other 10 maize landraces from Henan province were detected in 3 groups, showing a high genetic diversity. The result indicated that these maize landraces could be conserved selectively and used in maize improvement.
出处
《华北农学报》
CSCD
北大核心
2009年第1期125-127,共3页
Acta Agriculturae Boreali-Sinica
基金
河南省重大科技专项(0620010200)
河南省农业科学院科研发展专项资金(200703)
关键词
玉米
地方品种
SSR
遗传多样性
Maize（ Zea mays L. ）
Landrace
SSR
Genetic diversity
