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作者对 1998～ 2 0 0 0年间采自云南省 13个县、2 3个地点的马铃薯晚疫病菌的交配型、菌落形态、燕麦培养基上生长情况、生长速度和产孢量进行了测定。结果显示 ,采自云南 13个县、 2 3个地点的共 15 7个菌株全部为 A1交配型 ,表明云南马铃薯主产区的晚疫病菌以 A1交配型为主 ,同时 ,被测的代表菌株在生长速度和产孢量上存在显著差异 ,表明这一地区的晚疫病菌种群内存在丰富的遗传多样性。此外 ,结果还显示 ,晚疫病菌菌株在燕麦培养基上的生长情况与其菌落形态和交配型不相关。
The author studied the mating type, the colony morphology, the growth, the growth rate and the sporulation of P. infestans collected from 13 counties and 23 locations in Yunnan Province from 1998 to 2000. The results showed that a total of 157 strains collected from 23 sites in 13 counties in Yunnan Province were A1 mating type, indicating that the main pathogen of late blight in Yunnan potato was the A1 mating type. At the same time, the representative strains tested There was a significant difference in growth rate and sporulation rate, indicating a rich genetic diversity within P. infestans populations in this area. In addition, the results also showed that the growth of Phytophthora infestans strains on oat medium was not related to their colony morphology and mating pattern.