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作 者 ：张长顺

期 刊 ：植物学通报 1999年 16卷 03期 页码：288-292

关键词：小孢子；染色体；核型；四分体微核；

摘 要 ：本文研究了昆明栽培的韭菜的小孢子染色体数目和核型，多数小孢子的染色体数目n=16，少数是非整倍体，核型公式为n=2x=16=14m+2st(SAT)。同时观察了韭菜的育性和小孢子四分体微核情况，育性和四分体微核率分别为48％、23.6％。上述结果说明韭菜的核型与前人曾报道过的韭菜的核型—样是同源四倍体。

Abstract:In this paper, the chromosome numbers and karyotypes of Allum tuberosum were observed. The chromosome numbers of the most microspores are n= 16, a few are aneuploid. According to these facts, karyotype formula n= 2x = 16= 14m + 2st(SAT) was obtained. The fertility and tetrasporic micronucleus of microspore were observed too. They are 48% and 23.6% respectively. These results confirmed that the karyotype of Allium tuberosum is the isotetraplont which had been reported by others.

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