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作 者 ：黄瑞复 党承林 虞泓

期 刊 ：云南植物研究 1996年 18卷 S8期 页码：1-3

关键词：大花韭；多星韭；柳叶韭；倍性；染色体基数；

Keywords:Allium macranthum,

摘 要 ：大花韭Allium mactanthum Baker和多星韭(Allium wallichii Kunth及其变种柳叶韭(Allium walichii Kunth var．platyphyllum J.M．Xu)的核型，它们的染色体基数都是人大花韭有倍性变化，出现二倍体和四倍体，核型公式分别为2n=2x=14=10m+4st和2n=4x=28=20m＋8st；最长染色体和最短染色体的长度比分别为3.03和3.00；着丝点端化值分别为60.67％和59.70％；均为2B核型。多星韭也有倍性变化，出现二倍体和四倍体，核型公式分别为2n=2x=14=4m（2SAT）＋10sm和2n=4x=28=12m（2SAT）＋16sm；最长染色体和最短染色体的长度比均为1.60；着丝点端化值分别为62.76％和62.50％；均为2A核型。柳叶韭为二倍体，核型公式为2n=2x=14=4m（2SAT）十10sm；最长染色体和最短染色体的长度比为168；着丝点端化值为63.81％；也是2A核型。

Abstract:The karyotypes of Allium macranthum Baker, Allium wallichi Kunth and its variety Allium wallichi Kunth var. platyphyllum J. M. Xu were investigated. They had the same basic chromosome numbers of x= 7. There were diploid and tetraploid observed in the species Allium macranthum. Their karyotypes could be formulated as 2n=2x= 14= 10m+4st and 2n = 4x = 28 = 20m+8st respectively, belonging to Stebbins/ 2B type. The ratios between longest to shortest chromosome were 3.03 and 3.00 respectively. The centromeric terminalization values were 60.67 and 59.70 respectively. There were also diploid and tetraploid observed in the species Allium wallichii. Their karyotypes could be formulated as 2n= 2x= 14=4m(2SAT)+10sm and 2n=4x=28= 12m(2SAT)-H6sm respectively, belonging to Stebbins/ 2A type.

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