最新大豆胞囊线虫病【精品-】PPT课件.ppt

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1、大豆胞囊线虫病【精品-】病原：大豆胞囊线虫Heteroderaglycines，属异皮科，胞囊线虫属。线虫的卵初为蚕茧形，一侧微弯。形成于雌虫体内，贮存于胞囊中。幼虫分4龄，脱皮3次后变成成虫。成虫雄虫线状，雌虫梨形。胞囊线虫除危害大豆外，还可危害小豆、绿豆、白羽扁豆.。大豆胞囊线虫有生理分化现象，我国黑龙江及吉林为3号、辽宁兼有1号和3号小种，山东、山西、安徽、江苏为4号小种，此外安徽还发现5号小种，山东、河南发现7号小种。大豆胞囊线虫1.二龄幼虫2.三龄幼虫(雌)3.四龄幼虫4.雌虫5.胞囊6.三龄幼虫(雄)7.四龄幼虫(雄)8.成熟前的雄虫9.

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