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从浙江省金华市的罗埠、洋埠、孝顺、石桥区及萧山县的红山农场和钱江农场采得受根结线虫侵染的棉苗样本共80个。经形态鉴定和鉴别寄主试验参考国际根结线虫规划中心推荐的生理小种鉴定程序,改用单卵块接种法,最后确定为南方根结线虫(Meloidogyne incognita)的4号生理小种。 在供试验的四种寄主中,受4号小种危害最重的是协作—2号,其次是岱字—16和钱江9号,烟草Nc 95受害最轻。
A total of 80 samples of cotton seedlings infected with root knot nematodes were collected from Hongshan Farm and Qianjiang Farm in Luohu, Yangbu, Xiaonan, Shiqiao and Xiaoshan Counties in Jinhua City, Zhejiang Province. According to morphological identification and identification of host test reference to the international root-knot nematode planning center recommended physical races identification procedures, using single egg inoculation method, and finally identified as southern root-knot nematode (Meloidogyne incognita) No. 4 race. Among the four hosts tested, No. 4 was the hardest hit by race 4, followed by Dai-16 and Qianjiang 9, and tobacco Nc 95 was the hardest hit.