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对来自我国北方１１个省（区）、直辖市的６５个市、县，小麦近缘野生植物８属４２种３９３份，用小麦白粉病菌１１个小种的混合菌种进行接种，除２１份免疫外，均接种成功。用接种成功的７属４０种共２８６份小麦近缘植物产生的白粉病菌，分别对小麦回接，亦全部回接成功。用６个小麦白粉病菌小种，对７属１５种共２９份小麦近缘植物进行分小种接种，发现它们与在小麦上一样有很强的寄生专化现象。在１～６叶期，８４．４％的小麦近缘植物对小麦白粉病菌的感病性随生育期的推移而下降，其中４７．４％病情降为０，３７．０％部分病情下降，１５．６％病情变化不大。
A total of 393 species from 42 genera and 8 genera of 65 cities, counties and wheat from 11 provinces (autonomous regions and municipalities) in the north of China were inoculated with 11 race species of powdery mildew and divided into 21 immunizations In addition, all were vaccinated successfully. With the successful inoculation of 40 species of a total of 286 wheat germplasm generated powdery mildew, wheat, respectively, after the connection, but also all back to success. Six wheat outbreaks of wheat powdery mildew were used to inoculate 29 wheat relatives of 15 genera in 7 genera and were found to have the same strong parasitization as in wheat. In the 1 ~ 6 leaf stage, the susceptibility of 84.4% of the wheat-related plants to powdery mildew was declining with the growth period, of which 47.4% was reduced to 0 and 37.0% 15.6% did not change much.