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作 者 ：张赞平 侯小改 孟丽

期 刊 ：植物学通报 1997年 14卷 增刊期 页码：49-54

关键词：烟草属；粘烟草；内索菲拉烟草；斯托克通氏烟草；核型；

摘 要 ：本文对三种烟草属植物进行了核型分析。粘烟草Nicotiana glutinosa为二倍体，其核型可简式为：2n=24=10M+10m+4sm(2SAT); 内索菲拉烟草N. nesophila和斯托克通氏烟草N. stocktonii可能均为双二倍体，其核型简式，前者为2n=48=6M+20m(2SAT)+18sm+4st，后者为2n=48=14M+12m+18sm+4st。此外，作者对供试材料的染色体基数、倍性及随体等问题进行了初步讨论。

Abstract:The karyotypes of 3 species in Nicotiana ( N. glutionsa , N. nesophila and N. stocktonii ) were studied. The results show that N. glutinosa is a diploid, with a karyotype formula of 2n=24=10M+10m+4sm(2SAT), while N. nesophila is a probable amphidiploid, with 2n=48=6M+20m(2SAT)+18sm+4st, and N. stocktonii is also a probable amphidiploid,with 2n=48=14M+12m+18sm+4st. In addition,the chromosomal basic numbers and multiple and SAT-chromosomes in the experimental materials are discussed briefly.

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