南方根结线虫侵染不同抗性烟草品种的组织病理学观察  

Histopathological Changes of Different Tobacco Varieties Infected by Meloidogyne incognita

作　　者：王刚[1] 沈永红[1] 王俊芳[1] 王汝贤[2] 

机构地区：[1]河南大学生命科学学院,河南开封475001 [2]西北农林科技大学植物保护学院,陕西杨凌712100

出　　处：《河南农业科学》2006年第2期61-63,共3页Journal of Henan Agricultural Sciences

基　　金：河南省教育厅自然科学基金项目(200510475036)

摘　　要：利用烟草抗病品种K326和感病品种红花大金元,研究了南方根结线虫侵染过程中的组织病理学变化。结果显示:接种后3 d,2个品种都能形成巨型细胞,且巨型细胞的数量和形态没有显著差异。接种后15 d,感病品种中巨型细胞正常发育,而抗病品种中巨型细胞出现空泡。接种25 d,抗病品种巨型细胞发生崩解。表明不同抗性品种巨型细胞的形态变化与品种的抗性有关。Histopathological changes of resistant variety K326 and susceptible variety HOND DA in fected by Meloidogyne incognita were studied. The results showed that giant Cells could be formed in both varieties 3 days after inoculation, and no quantitive and morphologic changes of giant cells were found. The giant cells in HONG DA after 15 days developed normally but became disintegrated in K326. After 25 days following inoculation, the cytoplasma of giant cells in K326 became collapsed but normally developed in HONG DA. It is suggested that morphologic changes of the giant cells be in connection with tobacco resistance against the nematode.

关 键 词：南方根结线虫 烟草 巨型细胞 组织病理学 

分 类 号：S435.72[农业科学—农业昆虫与害虫防治]