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中文摘要：
为了解贵州西南蔗区甘蔗宿根矮化病发病情况，应用PCR技术对该蔗区的甘蔗样品进行宿根矮化病检测。结果表明：贵州西南蔗区的13个甘蔗主要栽培品种和主推品种，共118个样品中有98个样品检出RSD，阳性检出率为83．05％；其中粤糖00—236，巴西45，罗汉蔗，拔地拉，黔糖3，ROC21等6个品种发病较严重，阳性检出率高达100％；其余7个品种也均发病，阳性检出率在42．86％～90．00％之间。
英文摘要：
The aim of this work was to investigate of sugarcane ratoon stunting disease （RSD）. Sugarcane samples from different cane areas in southwest Guizhou were detected by PCR technology. The results showed that among 13 sugarcane varieties including major plant varieties and main recommended varieties, 98 samples （83.05%） of 118 samples were RSD positive. The six varieties of Yuetang 00-236, Brazil 45, Luohan cane, Badila, Qiantang 3 and ROC21 were seriously infected, positive detection rates were as high as 100%. The rest of the 7 varieties were also infected, positive detection rates between 42.86%-90.00%.
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