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Genetic Diversity of High Quality Winter Wheat Varieties (Lines) Based on SSR Markers

CHEN Xin Min 1 HE Zhong Hu 1 SHI Jan Rong 2 XIA Lan Qin 1 Rick Ward 2 ZHOU Yang 1 JIANG Guo Liang 2( 1 Institute of Crop Breeding and Cultivation, CAAS, Beijing 100081; 2Wheat Laboratory, Michigan State University, East Lansing 48824 MI, USA)  
A set of 59 wheat SSR primers located on 21 wheat chromosomes were used to investigate the genetic diversity of 48 winter wheat cultivars and lines conferring good quality in winter and facultative region. A total of 209 allelic loci were detected, the number of alleles per primer pair ranged from 2 to 9, with average 3.5. The value of allelic polymorphism information content (PIC) ranged from 0.16 to 0.87, on an average, 0.56 per primer. The 48 wheat cultivars could be identified with combined 8 primers. Cluster analysis showed that all cultivars could be clustered into five groups, which is generally agree with pedigree analysis. The results indicated that SSR markers play an important role in variety identification and study of genetic diversity.
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