摘要
首次报道了急尖长苞冷杉ＡｂｉｅｓｇｅｏｒｇｅｉＯｒｖａｒ．ｓｍｉｔｈｉ（ＶｉｇｕｉｅｅｔＧａｕｓｓｅｎ）ＣｈｅｎｇｅｔＬ．Ｋ．Ｆｕ，臭冷杉Ａ．ｎｅｐｈｒｏｌｅｐｉｓ（Ｔｒａｕｒｖ．）Ｍａｘｉｍ．和杉松Ａ．ｈｏｌｏｐｈｙｌａＭａｘｉｍ．等３种东亚冷杉植物的核型。它们的核型公式分别是Ｋ（２ｎ）＝２４＝１８ｍ（２ＳＣ）＋６ｓｍ，１８ｍ（６ＳＣ）＋６ｓｍ和１４ｍ（６ＳＣ）＋１０ｓｍ，染色体相对长度组成为２ｎ＝４Ｌ＋８Ｍ２＋１０Ｍ１＋２Ｓ，４Ｌ＋８Ｍ２＋８Ｍ１＋４Ｓ和２Ｌ＋１２Ｍ２＋８Ｍ１＋２Ｓ。均为２Ａ核型类型。臭冷杉的核型比急尖长苞冷杉和杉松的对称和原始。
The present paper deals with the karyotype analysis of three species in the Abies (Pinaceae) from East Asia including A. georgei Orr var. smithii (Viguie et Gaussen) Cheng et L. K. Fu, A. nephrolepis (Trautv.) Maxim. and A. holophylla Maxim. The karyotype fmulas of the species are K(2n)=24=18m(2SC)+6sm, 18m(6SC)+6sm and 14m(6SC)+10sm respectively. Their chromosome complements are 2n=24=4L+8M2+10M1+2S, 4L+8M2+8M1+4S and 2L+12M2+8M1+2S according to the standard defined by Kuo et al (1972) based on relative length. They belong to 2A type of Stebbins' karyotypic asymmetry. The karyotypes of the species are reported for the first time. The karyotype of A. nephrolepis is more symmetry and more primitive than that of A. georgei var. smithii and A. holophylla.
出处
《云南植物研究》
CSCD
1997年第3期289-291,共3页
Acta Botanica Yunnanica
基金
高等学校博士学科点专项科研基金
国家自然科学基金
关键词
冷杉属
急尖长苞冷杉
臭冷杉
杉松
染色体组型
Karyotype, Abies, A. georgei var. smithii, A. nephrolepis, A. holophylla
