Abstract
The genetic diversity and similarities among 40 accessions of Leymus Hochst., distributed in 19 species and 1 subspecies, were analyzed by using random amplified microsatellite polymorphism (RAMP) markers. Of the 120 RAMP primer combinations tested, 24 (20%) produced polymorphic and clear bands. A total of 192 bands were amplified by 24 primer combinations, among which 179 (93.23%) bands were found to be polymorphic. Three to thirteen polymorphic bands were amplified by each primer combination, with an average of 7.64 bands. The data of 192 RAMP bands were used to generate Jaccard's similarity coefficients and to construct a dendrogram by means of UPGMA in the NTSYS-pc computer program. The genetic similarity coefficients ranged from 0.10 to 0.73 with the mean of 0.34. The results showed as follows: (1) Distinct genetic differences were present among the different species; (2) The different accessions in a species were clustered together, respectively, which had larger genetic similarities and closer relations; (3) The species with similar morphological characters and the species from the same areas or neighboring geographical regions were clustered together; (4) RAMP results are basically comparable with those obtained from studies on morphology. It is a useful method for analysis of the genetic diversity and similarities in Leymus.
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Yang, RW., Zhou, YH., Zhang, Y. et al. The Genetic Diversity Among Leymus Species Based on Random Amplified Microsatellite Polymorphism (RAMP). Genet Resour Crop Evol 53, 139–144 (2006). https://doi.org/10.1007/s10722-004-1933-6
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DOI: https://doi.org/10.1007/s10722-004-1933-6