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马铃薯是仅次于水稻、小麦、玉米的第四大粮食作物,又是粮菜兼用作物及重要工业原料。中国种植面积4000万亩以上,居世界第一位。马铃薯产量高,营养丰富,其蛋白质含量超过玉米、小麦、豌豆等。但因病毒侵染引起马铃薯严重减产与种质退化,薯块逐年变小、产量逐年降低,使我国马铃薯单产远远落后于国际先进水平。在农业生产上马铃薯Y病毒(PVY)、马铃薯X病毒(PVX)、马铃薯卷叶病毒(PLRV)等的侵染造成极大危害,它们的复合侵染后果更加严重,可导致减产80％以上。 病毒是引起马铃薯退化的主要原因,高温等不良条件使退化加速,而病毒危害程度又与栽培条件和管理技术密切相关。解决退化最根
Potato is second only to rice, wheat, corn, the fourth largest food crops, crops and food is also important industrial raw materials. China has planted more than 40 million mu and ranks the first in the world. High potato yield, nutrient-rich, its protein content than corn, wheat, peas and so on. However, due to virus infection caused by serious potato yield reduction and germplasm degradation, tuber size becomes smaller and output decreases year by year, so that China’s potato yield lags far behind the international advanced level. In agricultural production, the infection of potato virus Y (PVY), potato virus X (PVX), potato leafroll virus (PLRV) and so on is extremely harmful. The combined effect of their infection is more serious, which can lead to a decrease of more than 80%. Virus is the main cause of potato degeneration, high temperature and other adverse conditions to accelerate the degeneration, and the extent of virus damage and cultivation conditions and management techniques are closely related. Resolve the most degradation