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作 者 ：李林初；姜家华；王玉勤；王刚

期 刊 ：云南植物研究 1997年 19卷 04期 页码：1-3

关键词：核型；台湾翠柏；厚皮桧；红桧；柏科；

Keywords:Karyotype,

摘 要 ：分析了柏科台湾翠柏 Calocedrus macrolepis var．formosana、厚皮松 juniperus deppeana和红桧Chamaecyparis formosensis的核型。它们的根类体细胞染色体都为2n=22，核型公式分别是K（2n）=22m（2SAT），22m（2SAT）和 20m（2SAT）＋2sm，染色体相对长度组成分别为2n=22=6M2＋16M1，2L＋6M2＋14M1和4L＋6M2＋10M1＋2S，均属 1A类型。前2种植物的核型为首次报道。论文还讨论了有关细胞分类学问题。

Abstract:The present paper deals with the karyotype analysis of three species in Cupressaceae in-cluding Calocedrus macrolepis var.formosana, Juniperus deppeana and Chamaecyperis formosensis.Their morphology of somatic chromosomes in root tip cells, chromosome parameters and dia-grams are shown is Plate 1, Table 1 and Figure 1, respectively. The karyotype fomulas of the spe-cies are K(2n)= 22= 22m(2SAT), 22m(2SAT) and 20m(2SAT)= 2sm, respectively. Their chromosome complements are 2n = 22 = 6M2+16Ml, 2L+6M2+14Ml and 4L+6M2+10Ml+2S ac-cording to the standard defined by Kuo et al. (1972) based on relative length. They belong to 1A and 2A type of Stebbins‘ karyotypic asymmetry. The karyotypes of the two former species are re-ported for the first time. Some related cytotaxonomic problems are also discussed in the paper.

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