| 摘要: |
| 用40μg/L的CT,EK,EH,PAP和MAP在体外钝化CMV 1 h后接种,枯斑数依次降低达15. 2%, 88. 5%, 64%, 28. 1%和61. 6%.在接种CMV前24 h喷施80μg/L的CT,EK和EH,预防效果依次为92. 4%, 90%和82%,将浓度提高到100μg/L时3种药剂能完全抵抗TMV的摩擦接种和CMV的3头蚜虫接种。接种CMV 24 h后分别喷施80μg/L的CT, EK和EH,病情指数依次为0. 09, 0. 29和0. 11;若间隔喷施2次则能使93. 2%,89. 6%和74. 1%的病株恢复正常。 |
| 关键词: 抗病毒药剂，TMV，CMV，烟草，病毒病防治 |
| DOI： |
| 分类号:S432.41 |
| 基金项目:国家攀登计划资助项目(85-31-02-03),国家863青年基金(97-137),植物病虫害国家重点实验室开放基金(97-1) |
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| Effect of Antiviral Substances on Virus Infection and Plant Resistances |
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| Abstract: |
| When mixed at 40μg/L CT,EK,EH,PAP and MAP with the same volume of 2% infected leaf sap of cucumbermosaic virus (CMV) for 1 h separately, and then applied to Chenopodium amaranticolor, they redused necrotic local lesion numbers
by as much as 15. 2%, 88. 5%, 64%, 28. 1% and 61. 6% respectively.At a concentration
of 80μg/L appilication of CT,EK and EH 24 h before CMV inoculation, protein effects
of 92. 4%, 90% and 82% were obtained;at 40μg/L, they completely inhibit TMT and
CMV infection by sap or aphid-transmissible inoculation, disease severity was 0. 09, 0. 29
and 0. 11 respectively.Furthermore,with two times applications of 80μg/L,CT,EK and
EH can restore the infected seedlings as much as 93. 2%, 89. 6% and 74. 1%. |
| Key words: antiviral substance,TMV,CMV,contral of tobacco virus disease |
