水稻条纹叶枯病研究

A study on rice stripe disease

本研究通过电镜观察发现 ,病毒粒体呈长丝状 ,由细丝缠合成束状 ,粒体直径约 8nm ,全长约 40 0nm ,通过在人工裁培苗上进行灰飞虱人工接种试验 ,表明灰飞虱高龄若虫的获毒率和传毒率在初期较高 ,然后降低 ,但随着获毒时间和接种时间的延长又呈增高趋势 ,高的分别可达 5 0 %和 40 %。而雌雄虫成对接种 ,其后代传毒率高于其亲代 ,为 75 % 。

The electron microscope observation showed that the particle of purified preparation was in a long silk form,with diameter of 8nm and the length of 400nm.The inoculation result of Laodelphax srriatellus on rice seeding showed that required insects and of laodelphax striatellus was more serious at the beginning than one of the later. As time goes on , it appears increasing tendency and reach to 50% and 40%. The inoculation of male with female together, Infective insects of the progeny is higher than the one of their parents, can reach to 75%.