摘要
用烟草花叶病毒（ＴＭＶ）接种过敏性寄主枯斑三生烟或心叶烟的半叶或下部两叶，可诱导出未接种的另半叶或上部叶对ＴＭＶ再次感染的抗性，诱发接种后７ｄ用ＴＭＶ进行攻击接种，所产生的枯斑直径明显小于对照。诱发抗性最早在诱发接种后３～４ｄ被检测到，第７ｄ左右达到高峰，温度对诱发抗性的产生有很大影响。诱发接种叶上部的未接种叶因叶位不同，其抗性强弱也不同。经ＴＭＶ诱发后的心叶烟可表现出对ＴＭＶ和ＣＭＶ两者的抗性，在攻击接种ＣＭＶ后，潜育期比对照延长１～２ｄ．
Inoculation of half一leaves of lower 2 leaves of hypersensitive tobaccoNicotiana tabacum var Samsun NN or Nicotiana glutinosa,with tobacco mosaic virus(TMV)induce a high level of resistance to TMV in the opposite half一leaves or upperleaves. Challenge inoculation with TMV of the resistant half一leaves of upper leaves 7davs after the first inoculation resulted in limited lesion formation,the lesions were con-stantly smaller than those on the control plants.Temperature has a great effect uponthe induced resistances. The strong and weak resistance of the uninoculated leaves inthe upper of the induced inoculated leaves is different because of different leaf positions.The leaves of N. glutinosa with TMV induced resistance were resistant not only toTMV but also to cucumber mosaic virus(CMV).The latent period of CMV in resistantleaves was 1一2 days longer than that on the control plants.
出处
《西北农业大学学报》
CSCD
1994年第3期36-40,共5页
Journal of Northwest Sci-Tech University of Agriculture and Forestry（Natural Science Edition)
基金
国家自然科学基金
关键词
烟草
花叶病毒
心叶烟
诱发抗性
TMV,Nicotiana glutinosa,Nicotiana tobacum var.Samsun NN,in-duced resistance
