马铃薯又叫土豆、洋芋,667平方米产量 1000～3000 公斤,每公斤 1.0元左右;因其植株矮小,适于间作套种,经济效益较高,深受农民的欢迎,在河南省发展很快。 引起马铃薯退化的内因是病毒。马铃薯感染病毒后,表现有花叶类型、卷叶类型和束顶类型,有的表现为植株矮小、叶片失绿,有的表现为叶片卷曲坏死,有的表现为植株顶部叶片变色、卷缩,块茎变小、龟裂、变尖,内部网状坏死,严重者失去发芽能力,不能作种,一般减产 20％～30％,严重者减产80％以上,病情逐年加重,最后失去种用价值。马铃薯是性喜冷凉的作物,河南、安徽及山东等省一般夏季酷热、冬天寒冷,在马铃薯生态区划上属于中原春、秋二作区,是历史上马铃薯退化最严重和就地留种最困难的地区。 马铃薯脱毒去除了主要病毒,恢复了原品种的特性,达到了复壮的目的;同时在脱毒过程中也将其所感染的真菌 Potato, also known as potatoes, potato, 667 square meters production of 1000 to 3000 kg, 1.0 yuan per kilogram; because of their short plants, suitable for intercropping, high economic efficiency, welcomed by farmers, the rapid development in Henan Province. The internal cause of potato degradation is the virus. Potato virus, the performance of the mosaic type, curl type and bundle top type, and some showed short plants, green leaves, some of the performance of curly leaf necrosis, and some showed the top of the leaves discoloration, crimping, tubers Small, cracked, pointed, internal reticular necrosis, severe loss of germination ability, can not be used as species, the general reduction of 20% to 30%, severe reduction of more than 80%, the disease increased year by year, the last loss of species value. Potato is a sexually cool crop. The provinces of Henan, Anhui and Shandong are generally hot in summer and cold in winter. They belong to Zhongyuan Spring and Autumn II in the ecological zoning of potatoes. They are the most degenerative potato in history and the most inhabited in situ Difficult area. Virus detoxification removes the main virus and restores the characteristics of the original breed to achieve the goal of rejuvenation. At the same time, it also infect the infected fungi