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１９９２ ～１９９６ 年，从辽宁省不同生态地区共采集番茄叶霉病菌标样６７ 份，采用国际通用的鉴别寄主进行生理小种鉴定，结果表明，该省番茄叶霉病菌以生理小种１．２ ．３ 为主，是当前生产上流行的优势小种，而１ ．２ ．３ ．４ 为稀有小种。
From 1992 to 1996, a total of 67 samples of tomato leaf mold were collected from different ecological regions of Liaoning Province. The identification of the physical races with internationally recognized host was carried out. The results showed that the leaf mold of tomato leafhopper . 3-based, is the prevalence of the current production of races, and 1. 2. 3. 4 for the rarest races.