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早在1892年就认识到病毒是植物病害的病源之一,但长期没有得到重视。1930年左右,北美发现5种桃树病毒。自此以后,对病毒病的研究进展很快。到五十年代,在核果类上已发现40——50种病毒病。无性繁殖果树的病毒病与其它由昆虫、真菌和细菌引起的病害的区别在于:1.喷药是无法防治的;2.被病毒侵染的树不能恢复:3.用带病毒树的任何部位作繁殖材料,其后代均带病毒:4.病毒自身不会传播。
As early as 1892, the virus was recognized as one of the causes of plant diseases, but it has not been given long-term attention. Around 1930, five peach viruses were found in North America. Since then, research on viral diseases has progressed rapidly. By the 1950s, 40 to 50 viral diseases were found on stone fruits. Virus diseases of vegetatively propagated fruit trees differ from other diseases caused by insects, fungi and bacteria in that: 1. Spraying is beyond control; 2. The virus-infested tree can not be restored: 3. Any part of the tree carrying the virus Breeding materials, their offspring are with the virus: 4. The virus itself will not spread.