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首页> 外文期刊>Plant Pathology >The importance of the infected seed tuber and soil inoculum in transmitting Potato mop-fop virus to potato plants
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The importance of the infected seed tuber and soil inoculum in transmitting Potato mop-fop virus to potato plants

机译：感染的块茎和土壤接种物在将马铃薯拖把病毒传播到马铃薯植物中的重要性

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Potato mop-top virus (PMTV), the cause of spraing in potato tubers, is transmitted by Spongospora subterranea, the cause of powdery scab, and by planting infected seed tubers. This study was undertaken to determine the relative importance of these sources of infection in seed potato production in Scotland. The transmission of PMTV from tested seed tubers to daughter plants was examined over 2 years and six cultivars. The development of foliar symptoms varied with year and cultivar. Infection of daughter tubers derived from PMTV-infected seed tubers was more prevalent on plants affected by foliar symptoms than those without symptoms. The rate of transmission of PMTV from infected seed tubers to daughter tubers ranged from 18 to 54%. Transmission was affected by cultivar and by origin of seed tubers used for a cultivar, but not by a cultivar's sensitivity to PMTV infection. The incidence of PMTV in daughter tubers of cv. Cara grown from seed potatoes from one source (common origin) by more than 25 seed producers was examined over two successive generations. The incidence of PMTV in daughter tubers was not correlated with that in the seed tubers but appeared to be strongly associated with soil inoculum. The incidence of PMTV was correlated with powdery scab in those crops in which both were present. There was some evidence from soil tests conducted in 2006 using a tomato bait plant and real-time RT-PCR that planting PMTV-infected seed potatoes could increase the risk of introducing the virus into land not infested by PMTV.
机译：马铃薯块茎产生病的原因是马铃薯拖布顶病毒（PMTV），它是由海绵状结，的原因，粉状结ab的病菌传播以及通过种植受感染的种子块茎而传播的。进行这项研究是为了确定这些感染源在苏格兰种薯生产中的相对重要性。在2年中和6个品种中，研究了PMTV从受试种子块茎向子代植物的传播。叶症状的发展随年份和品种而变化。与没有症状的植物相比，受PMTV感染的种子块茎的子块茎的感染在受叶面症状影响的植物上更为普遍。 PMTV从受感染的种子块茎到子块茎的传播率在18％至54％之间。传播受品种和用于该品种的种子块茎起源的影响，但不受品种对PMTV感染的敏感性的影响。 PMTV在简历子代块茎中的发生率。在超过两个连续的世代中，检查了超过25个种子生产者从一种来源（共同来源）的种薯中生长的卡拉。子块茎中PMTV的发生与种子块茎中的发生无关，但与土壤接种物密切相关。在同时存在两种作物的那些作物中，PMTV的发生率与粉状结ab有关。 2006年使用番茄诱饵植物和实时RT-PCR进行的土壤测试表明，种植受PMTV感染的种薯可能会增加将病毒引入不受PMTV感染的土地的风险。

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