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用烟草花叶病毒诱发接种4种枯斑寄主:心叶烟、三生NN烟、珊西NC烟和蔓陀罗,可使接种植物对烟草花叶病毒、烟草蚀纹病毒及马铃薯X病毒的侵染表现很强的诱发抗性。这种抗性主要表现为处理的枯斑直径及枯斑数目比对照减少50%~75%。诱发抗性具有非特异性和广谱性。抗性在诱发接种后2~4天开始出现,7~8天达到最高抗性水平,且至少保持25天以上。
Inoculation of four kinds of dead spot host plants, tobacco leaf mosaic virus, nicotiana tobaccos, Sanxi NC tobacco and datura, was induced by tobacco mosaic virus to inoculate the host plants against tobacco mosaic virus, tobacco etch virus and potato X virus Infectious performance is very strong induced resistance. This resistance is mainly manifested as a reduction in the number of dead spots and the number of dead spots by 50% to 75% compared with the control. Induced resistance is non-specific and broad-spectrum. Resistance begins 2 to 4 days after inoculation inoculation, reaches the highest resistance level in 7 to 8 days, and remains for at least 25 days.