文献类型： 外文期刊

作者： Huang, C. Q. ¹ ; Huang, D. Y. ² ; Zhang, Y. F. ³ ; Liu, G. D. ¹ ;

作者机构： 1.Chinese Acad Trop Agr Sci, Trop Crop Genet Resources Inst, Key Lab Trop Crops Germplasm Resources Utilizat, Minist Agr, Danzhou 571737, Hainan, Peoples R China

2.Hainan Univ, Haikou, Hainan, Peoples R China

3.Energy Stn Rural Environm Protect Hainan Prov, Haikou, Hainan, Peoples R China

期刊名称：TROPICAL GRASSLANDS （ 影响因子：0.224； 五年影响因子：0.409 ）

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收录情况： SCI

摘要： Sequence-related amplified polymorphism (SRAP) was used to distinguish between and explore the genetic relationships among 57 Cynodon dactylon accessions collected from 17 coimtries in 5 continents. Cluster analysis by the unweighted pair-group methodof arithmetic averages showed 7 groups. The Chinese accessions, that were genetically very different from the others, formed 5 groups and displayed greater genetic variation than accessions fi-om other geographic regions. The genetic similarity coefficients among the 57 accessions ranged from 0.53 to 0.97. Results obtained clearly indicated significant variation existed in wild C. dactylon genotypes, and the SRAP technique was a reliable tool for differentiating between C. dactylon genotypes and determining genetic relationships among them. To fully assess the available variation in C. dactylon, larger numbers of accessions should be collected from all major geographic regions, where the species occurs, especially fi-om China and Australia.