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苹果锈果类病毒在八棱海棠种子中的分布及氢氧化钠脱毒效果分析

, PP. 342-345

Keywords: 苹果锈果类病毒,八棱海棠,种子,分布,脱毒

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Abstract:

为明确苹果锈果类病毒在八棱海棠果实和种子中的分布特征、种传率以及药剂脱除效果,以带毒母株上的八棱海棠果实和种子为试材,运用RT-PCR技术分析了八棱海棠果实不同部位锈果类病毒的带毒率、实生后代的带毒情况以及氢氧化钠脱除病毒的效果。结果表明,八棱海棠果皮、果肉、种子以及种胚均不同程度携带苹果锈果类病毒,其带毒率分别为96.0%、96.0%、52.0%和4.0%;该病毒可经种子传递给后代,种传率为12.1%;经2%氢氧化钠溶液浸种10、15、20min,种子的病毒检出率均为0,但后代实生苗的带毒率分别为2.5%、1.3%和0。表明苹果锈果类病毒可侵染种子不同部位并经种子传递给后代,氢氧化钠浸种是脱除该病毒的有效方法。

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