Cassava mosaic disease (CMD) threatens cassava (Manihot esculenta) production in Africa. A total of 24 selected cultivars were screened against CMD using combined molecular and greenhouse grafting tools. Disease severity was recorded for 10 weeks after inoculation and the molecular markers associated with CMD2 were detected by PCR. CMD severity significantly differed (P < 0.0001) among cultivars. Twelve cultivars were morphologically resistant and eight of these possessed CMD2 and four did not. These results suggest that there are several CMD-resistant cassava cultivars that could be recommended for on-farm production and for conservation and breeding programs.

中文翻译：

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使用组合分子和温室嫁接工具评估选定的非洲木薯品种对木薯花叶病的抗性

木薯花叶病 (CMD) 威胁着非洲的木薯 (Manihot esculenta) 生产。使用组合的分子和温室嫁接工具针对 CMD 筛选了总共 24 个选定的栽培品种。接种后 10 周记录疾病严重程度，并通过 PCR 检测与 CMD2 相关的分子标记。CMD 严重程度在栽培品种之间存在显着差异（P < 0.0001）。12 个品种具有形态抗性，其中 8 个具有 CMD2，4 个没有。这些结果表明，有几种抗 CMD 的木薯品种可以推荐用于农场生产以及保护和育种计划。