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甘薯(Ipomoea batatas(L)Lam.)是我国重要的粮食作物之一,也是重要的工业原料和饲料作物。然而由于受到病毒的感染,造成了生产上多年使用的品种发生了大幅度的退化减产,品质下降。我国现在已发现的主要的病毒有甘薯羽状斑驳病毒(SPFMV),甘薯潜隐病毒(SPLV)和甘薯褪绿斑病毒(SPCFV),病株症状表现为皱缩花叶型,并为高温隐症现象。调查表明,大多数甘薯田块植株的病毒感染率达到60%～70%,有的甚至达到90%,感病的品种减产幅度达30%～50%,甘薯病毒病已成为提高甘薯产量和品质的主要制约因素。在目前植物病毒病仍无特效药防治的情况下,通过茎尖分生组织培养脱毒苗是防治甘薯病
Ipomoea batatas (L.) Lam. Is one of the most important food crops in China and is also an important industrial raw material and feed crop. However, due to the virus infection, resulting in the production of varieties used for many years there has been a substantial reduction in yield, quality decline. The major viruses found in our country now include sweet potato feather mottle virus (SPFMV), sweet potato latent virus (SPLV) and sweet potato chlorotic spot virus (SPCFV) Symptoms. Survey shows that most of the sweet potato field plant virus infection rate of 60% to 70%, and some even up to 90%, the susceptible varieties yield reduction of 30% to 50%, sweet potato virus disease has become to improve sweet potato yield and quality The main constraints. In the current plant virus disease is still no cure for the case, through the shoot tip meristem culture virus-free vaccine is to prevent sweet potato disease