【摘要】 对自河北省宁晋县获得的一个特殊毛白杨无性系的初步研究表明其为一嵌合体。该嵌合体苗木的主要性状与毛白杨相似，但叶片略小，叶尖较尖；皮色为灰绿色，表皮可纵向分为两部分，一部分平滑，另一部分有纵棱；皮孔分布均匀，菱形。该嵌合体扦插成活率远高于毛白杨（３８．２％），达９６．４％。扦插成苗后发生分离，其中８８％为类似毛白杨，２．６％为杂杨，９．４％仍为嵌合体。过氧化物酶同工酶分析表明，嵌合体及由此萌生的类似毛白杨的叶片和皮层，酶谱更接近于毛白杨；而由嵌合体分离出的杂杨酶谱与小叶杨类似。更多还原

【Abstract】 Analyses of the poplar clone from Ningjin county suggested that the clone be a chimera that is similar to Chinese white poplar( Populus tomentosa Carr.):The differences of the chimera from Chinese white poplar:l.Its leaves were similar.2. There were vertical arrises on the parts of its grey green epidermis as simon poplar ( Populus simonii Carr.)and the other parts were smooth as Chinese white poplar.3.Especially,the survival ratio of shoot cuttage(96.4%)was higher than the Chinese white poplar(38.2%).The seedlings arised from shoot crttage consisted of three types:Chinese white poplar similitudes (88%),simon poplar(2.6%)and chimera(9.4%).The peroxidase isozyme zymograph showed that the chimera was similar to Chinese white poplar while not to simon poplar,but the zymograph of simon poplar seedling arised from chimera was like simon poplar.更多还原