【摘要】 柑桔衰退病毒(CTV)存在着许多生物学特性不同的株系。通过铲除感染强毒株植株或利用弱毒株交叉保护的方式来防治柑桔衰退病都需要对CTV株系进行准确、可靠的鉴定。本文根据对CTV衣壳蛋白基因(CPG)的限制性片段长度多态性(RFLP)分析,发现在重庆主栽柑桔品种的衰退病毒主要以CP/Hinf I RFLP第1、3和6组群为主,并且在田间以多株系混合感染为主。更多还原

【Abstract】 Citrus tristeza virus (CTV) has a number of distinct strains differing in biological characteristics in citrus fields. Strategies such as eradication of severe strains-infected trees or using mild strains cross protection require accurate identification on virus strains. In the study, restriction fragment length polymorphism (RFLP) was used to examine the coat protein gene of CTV, and it was found that CP/Hinf I RFLP group 1, 3 and 6 were dominant in Chongqing. The results obtained by RFLP analysis revealed that mixture of CTV strains often occurred in field trees.更多还原