| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an effective control method against necrosis mosaic disease of yam (Dioscorea japonica) thereby reducing the cost of agrochemicals, materials, fertilizer, seeds and seedlings and saving the labor for the crop management. <P>SOLUTION: The attenuated virus of yam necrosis mosaic disease (ChYNMV) that causes no symptom of necrosis mosaic disease or only a slight level of the symptom on yam leaves. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
