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| Analysis of Relativity between Phytophthora infestans Strains Collected in Different Years and from Different Geographical Sources in Heilongjiang Province |
| WANG Jia-nan1, LV Wen-he1*, JIN Guang-hui2, BAI Ya-mei3, LI Wen-xia1 |
| 1College of Agronomy，Northeast Agricultural University, Harbin 150030, Heilongjiang, China; 2College of Agronomy, Heilongjiang Bayi Agricultural University, Daqing 163319, Heilongjiang, China; 3College of Resource and Environment, Northeast Agricultural University, Harbin 150030, Heilongjiang, China |
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Abstract In this research，17 Phytophthora infestans isolates collected in Harbin in 2005, 2006 and 2008, and 46 isolates（all A1 mating type）collected from 8 sites of Heilongjiang Province in 2006 were used as experimental material. Clustering analyses were conducted on the relativity between P. infestans strains isolated in different years and from different geographical sources by 21 EST-SSR primer pairs, respectively. The results indicated that there was certain relativity between P. infestans strains collected in the same locality with the collecting year, and also there was certain relativity between P. infestans strains collected in the same year with geographical sources.
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Received: 12 June 2010
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