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| Physiological Race Identification of Powdery Mildew for Edible Seed
Watermelon and Melon in Some Regions of Xinjiang |
| SU Rui1，WANG Hui-lin1，2*，GAO Qiang1，JIA Song-nan1，ZHENG Jian2 |
1 Forestry and Horticulture College， Xinjiang Agricultural University， Urumqi 830052， Xinjiang， China； 2 National
Center for Melon Engineering Research, Changji 831100， Xinjiang， China |
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Abstract Ten pathogen collections of powdery mildew，which came from different grown
regions of Southern and Northern Xinjiang，were detected by standard system for identification of
powdery mildew. According to the internationally recognized melon differential standards for identifying
physiological races of powdery mildew，we confirmed that the disease was caused by Sphaerotheca fuliginea．
There were two races, race 1 and race 5．Race 1 was the dominant one in Northern Xinjiang，
and race 5 was in 2 regions of Southern Xinjiang.
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Received: 02 January 2013
Published: 22 March 2013
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