【摘要】 植物病毒间普遍存在干扰现象。目前已能从自然感染的植物中分离选择和通过人工诱变或组建弱病毒。把弱毒株对强毒株的干扰作用应用于数种作物病毒病害的防治实践,获得了明显的增产效果。尽管还有许多问题尚待明确,但研究表明今后可能会制造出更有效的弱病毒,或将其干扰基因赋予植物而成为病毒抗性植物,显示了弱病毒研制上和利用上的广阔前景。更多还原

【Abstract】 The cross—inteferernce is present between the majority of plant virus es Mild strains of viruses have been obtained,by means of isolating from naturally-infected plants,or reconstructed through artificial induction artificial inducing and building.The cross-interference has been applied in controlling several plant virus diseases,which resultedin increasing yield. Although many problems remained,it is possible that more effective mild strains of viruses are produced and the mechanismof the cross-int erference may be introduced into plants and viruses resistant cultiv ars may be breeded.Studying on mild strains ofviruses has its bright prospects更多还原