Abstract:

The present paper deals with the karyotypes of Chlorophytum malayense Ridley and Diuranthera major Hemsl. It is found that both of these 2 species are diploids with chromosome number 2n=56. The karyotype formula of Chlorophytum malayense Ridley is K(2n)=56=20m(2SAT)+23sm+13st, belonging to " 3C" of Stebbins' karyotypic symmetry, and that of Diuranthera major Hemsl. is K(2n)=56=20m+22sm+14st, belonging to "3C". It seems that Diuranthera Hemsl. is more advanced than Chlorophytum Ker-Gawl.

Key words: Chlorophyrum malayense, Diuranthera major, Karyotype

摘要：

本文报道大叶吊兰和鹭鸶兰的核型。大叶吊兰的核型公式为2n=56=20m（2SAT)＋23sm＋13st核型类型为3B。鹭鸶兰的核型公式为2n＝56＝20m＋22sm十14st，核型类型为3C。鹭鸶兰属比吊兰属进化。

关键词: 大叶吊兰, 鹭鸶兰, 核型