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1987—1989年从绥化地区9个市县采集10个病菌标样,在隔离温室和田间隔离区里人工接种于12个大豆鉴别寄主品种上,鉴定出3个生理小种,与美国已报道的32个小种明显不同,暂命名为中1号、中2号和中3号小种。中1号小种在Pridesoy,Norchief,Mukden,Richland,Roanoke,Illini,Dorman,Kabott,Ogden,Woods-yellow10个鉴别寄主品种上表现感病,反应型为“S”型。在S-100,Palmetto上则表现免疫抗病,属“R”型。是一个毒力较强的优势小种,分布于绥化、绥稜、海伦、安达、青冈、明水等地。中2号小种在pridesoy,Norchief,Mukden,Richland,Illini,Dormah,Kabott,O-gden,Woods-yellow9个鉴别寄主品种上,均表现为“S”型,而在S-100,Roanoke,Pa-lmetto上则表现为“R”型。仅分布于兰西和肇州两地。中3号小种在Pridesoy,Norchief,Mukden,Richland,Illini,Palmetto,Dorma-n,Kabott,Ogden,Woods-yellow10个鉴别寄主品种上均表现为“S”型,而在Roanoke和S-100上则表现为“R”型。仅分布于庆安。
From 1987 to 1989, 10 germplasm samples were collected from 9 cities and counties in Suihua area, and inoculated into 12 soybean identification host cultivars in isolation greenhouse and field isolation area, 3 physiological races were identified, 32 races were significantly different, tentatively named as No. 1, No. 2 and No. 3 races. The minor races of No. 1 showed susceptibility to 10 differential host cultivars in Pridesoy, Norchief, Mukden, Richland, Roanoke, Illini, Dorman, Kabott, Ogden and Woods-yellow. The reaction type was “S”. In the S-100, Palmetto on the performance of immune disease, is “R” type. Is a virulent superior species, located in Suihua, Suiling, Helen, Anda, Cyclobalanopsis, Ming water and other places. Race 2 showed the “S” type in nine identified host breeds of pridesoy, Norchief, Mukden, Richland, Illini, Dormah, Kabott, O-gden and Woods- -lmetto on the performance of “R” type. Only distributed in Lanxi and Zhaozhou two places. The race 3 in No. 3 showed “S” type on 10 differential host cultivars in Pridesoy, Norchief, Mukden, Richland, Illini, Palmetto, Dorma-n, Kabott, Ogden and Woods-yellow, whereas on Roanoke and S-100 It appears as “R” type. Only distributed in Qing’an.