Cuibi 1,Xiaohuangjin 1025 and Huangmiaoyu,landrace varieties,formed independent groups and they could be exploited as the breeding parents to widen the genetic basis of domestic flue-cured varieties of China.

• 通过聚类分析可将参试品种分为14个类群,国内大多数推广品种、育成品种被聚在类群,说明其遗传基础比较狭窄; 地方品种翠碧1号、小黄金1025、黄苗榆和净叶黄等各自聚为独立的类群,可利用它们作为杂交亲本来拓宽烤烟品种的遗传基础。