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马铃薯病毒病所致的种薯严重退化,产量锐减,我国大部分马铃薯产区都可严重发生,一般减产20%~50%,严重的可减产80%以上,给生产带来严重威胁,目前已成为发展马铃薯生产的最大障碍和主要病害之一。发病原因:引起马铃薯病毒病的病原目前可查的有20多种病毒,其中线形病毒粒体的马铃薯X病毒(图1)在马铃薯上引起轻花叶症;马铃薯Y病毒(图2)可引起严重花叶或坏死斑和坏死条斑,病毒粒体线形;Y病毒与X病毒混合侵染时呈现严重的皱缩花叶及矮化症。我国发生的
Potato disease caused by potato virus has seriously degenerated and its output has dropped sharply. Most of the potato producing areas in our country can be seriously affected, with a general decrease of 20% ~ 50% and a severe yield reduction of over 80%, posing a serious threat to production. Currently, It has become one of the major obstacles and major diseases in the development of potato production. The cause of the disease: The causative agent of potato virus disease There are currently more than 20 kinds of viruses that can be investigated, of which the linear virion virus of potato virus X (Figure 1) causes light mosaic disease on the potato; the potato virus Y (Figure 2) Severe mosaic or necrotic spots and necrotic streaks, virus mitochondria linear; Y virus and X virus mixed infection showed serious folds of mosaic and dwarfism. What happened in my country