Abstract
Sequence-related amplified polymorphism (SRAP) molecular marker was used to detect the genetic diversity of 25 accessions of Phalaris arundinacea Linn that collected from the USA, Russia, Kazakhstan, Canada, LanZhou and HuBei. The following results were obtained: 1) Sixteen primer pairs produced 131 polymorphic bands, with an average of 8.19 bands per primer pair. The percentage of polymorphic bands on average was 89.25%. The polymorphism information content (PIC) ranged from 0.784 to 0.9069, with an average of 0.8696. 2) The Neis genetic similarity coefficient of the tested accessions ranged from 0.5959 to 0.8425, and the average of Neis coefficient was 0.7422. These results suggested that there was rich genetic diversity among the resources of Phalaris arundinacea Linn. 3) Twenty-five accessions were clustered into five groups. Moreover, the accessions from the same or similar origin frequently clustered into one group. The findings implied that the correlation among the resources, geographical and ecological environment.
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