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夏蜡梅属的细胞地理学研究
李林初;   
复旦大学生物系 上海
摘要:
本文首次报道西美蜡梅(Calycanthus occidentalis)的核型为K(2n)=22=20m(2SAT)+2sm,与美国蜡梅的变种光叶红(C.floridus var.oblongifolius)同属“2A”类型但较为原始,它们都比“1A”的夏蜡梅(C.chinensis)进化,三者由原始到进步的顺序可能为夏蜡梅—→西美蜡梅—→美国蜡梅(光叶红)。夏蜡梅属可能以较原始的夏蜡梅起源于东亚(中国),再东向迁移到北美洲(美国)形成西美蜡梅和美国蜡梅(光叶红)。
关键词:  夏蜡梅属  夏蜡梅  西美蜡梅  光叶红  染色体数目  核型  细胞地理  
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