山东省玉米病毒病病原鉴定与防治研究

Study on Pathogens and Control of Maize Virus Diseases in Shandong Province

利用基因组核苷酸全序列测定、电镜观察、血清学测定、传播介体传毒试验等方法对山东省田间发生的玉米病毒病进行了病原鉴定。结果表明,山东省玉米病毒病病原主要是甘蔗花叶病毒山东株系(SCMV-SD)和玉米粗缩病毒(MDMV)。田间试验5种防治植物病毒病专用药剂对玉米病毒病均有一定的防病效果,最高防效在60%左右。采用种植抗病品种、苗期拔除病苗、药剂拌种防虫和适期施用农药等综合防治措施,防病效果达61.35%～85.75%,增产率6.25%～13.99%。

Identification on pathogens of maize viral diseases in Shandong province was conducted by whole genomic sequencing, electron microscope observation, serological analysis and vector transmitting test. The result showed that the main pathogens were Shandong strain of sugarcane mosaic virus（SCMV-SD） and maize rough dwarf virus（MRVD）. SCMV-SD was mainly transmitted by aphids, and MRDV was transmitted by laodelphax striatellus. The diseases control had some effect in trial by 5 chemicals for plant viral disease, the higher was about 60%. The integrate control method included of using varieties that resistant to maize viral diseases, eradicating disease seedlings during seedling stage, maize seed dressing with pesticide before sowing seeds for pest control and spraying chemicals for plant viral disease in good time etc. The effects of diseases control were 61.35% - 85.75% and the amount of increase in production was 6.25% - 13.99%.