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作 者 ：李林初 傅煜西

期 刊 ：云南植物研究 1995年 17卷 01期 页码：1-3

关键词：雪松属；核型；进化；细胞分类学；历史植物地理学；

Keywords:Cedrus,

摘 要 ：雪松属合雪松，北非雪松、黎巴嫩雪松和短叶雪松等4种，它们间断分布于西北喜马拉雅、西北非及西亚。本文分析了雪松的核型，K(2n)=24=18m＋6sm，该结果与Hizume(1988)的一致但不同于Mehra ＆ Khoshoo (1956)的。作者比较了雪松属3个代表种的核型并提出了它们的进化趋势可能是雪松→北非雪松→黎巴嫩雪松。从松科各属核型的比较分析，作者认为将雪松属由落叶松亚科分出置于冷杉亚科是合乎需要的。根据细胞学、化石、地理分布、古地理和古气候等资料，本文还讨论了雪松属的起源、迁移和进化。

Abstract:In the genus Cedrus Trew there are currently 4 species- C. deodara, C. atlantica, C. libani and C. brevifolia,, which disjunctly distribute in the north-western Himalayas (India and eastern Afghanistan), in the north-western Africa (eastern Morocco to Algeria) and in the western Asia (Lebanon, Syria, southern Turkey, the Island of Cyprus). The present paper deals with the karyotype analysis of Cedrus deodara. The karyotype formula of the species is K(2n)=24= 18m+6sm, which is the same as that of Hizume‘s (1988) and different from that of Mehra & Khoshoo‘s (1965). The karyotypes of three represent species of Cedrus are compared and there may be a trend from primitive to advanced as C. deodara -^ C. atlantica -* C. libani. Accord-ing to the comparison among the karyotypes of pinaceous genera, the author considers that it is desirable to separate Cedrus from Laricoideae and put it into Abietoideae. Based on the data of cytology, fossil, geographical distribution, palaeogeography and palaeoclimate, etc., the present paper discussed the origin, the migration and the evolution of Cedrus.

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