【摘 要】
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Oxytropis ochrocephala is one of the most hazardous poisonous grass species extensively distributed on the grasslands of western China.It causes livestock p
【机 构】
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DepartmentofBiology,NorthwestUniversity,229NorthTaibaiRoad,Xian,710069,China
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Oxytropis ochrocephala is one of the most hazardous poisonous grass species extensively distributed on the grasslands of western China.It causes livestock poisoning and even death and results in great economic losses.Furthermore,it becomes invasive by replacing local forage grass species in natural grassland plant communities.In order to study the genetic background of O.ochrocephala,we employed EST-SSR markers to evaluate the genetic diversity and structure of 33 O.ochrocephala accessions (368 samples in total from Ningxia,Gansu,Qinghai,Sichuan Provinces and Tibet) across western China.Fourteen SSR primers were used for amplification,and showed an average PIC value of 0.7317;the expected heterozygosity,Neis gene diversity,and Shannon information index were 0.7622,0.7612 and 1.7973,respectively.
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