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川滇冷杉的核型分析兼论冷杉属的进化地位
李林初;   
复旦大学生物系 上海 200433
摘要:
本文分析了我国特产树种川滇冷杉Abies forrestii的核型,K(2n)=24=14 m+8 sin+2 st,属2B类型,染色体相对长度组成为2n=24=2 L+10 M2+10 M1+2 S。冷杉属植物(除川滇冷杉)的核型全由中部和近中着丝粒染色体组成,属2A类型(表2)。根据松科各属核型的比较,作者讨论了冷杉属的亲缘关系和进化地位,并得到形态学、解剖学、生化学、古植物学等的支持。
关键词:  冷杉属  川滇冷杉  松科  核型  进化  
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