1971年,美国科学家迪纳发现了一种新的具侵染力的致病微生物,叫做类病毒。这种植物新病原能够为害一些有重要经济价值的植物,造成重大损失,已报导了七种植物类病毒病害。例如:在菲律宾,由类病毒引起的椰子树死亡病,曾使1,500万棵椰子树死亡。 大约在六十年前,就知道有一种马铃薯病害,会使马铃薯植株矮化,叶片卷曲、皱 In 1971, American scientist Dina discovered a new infectious pathogenic microorganism called a virus. The new plant pathogen, which can cause serious damage to plants of significant economic importance, has reported seven plant-based virus diseases. For example: In the Philippines, the death of a coconut tree caused by a virus-like virus killed 15 million coconut trees. About sixty years ago, we knew that there was a potato disease that dwarfed potato plants, curled leaves and wrinkled leaves