| 黄枝油杉和矩鳞油杉的核型研究 |
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| 引用本文： | 陈维新,叶志云,蔡玲.黄枝油杉和矩鳞油杉的核型研究[J].中国科学院研究生院学报,1989,27(1):49-52. |
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| 作者姓名： | 陈维新 叶志云 蔡玲 |
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| 作者单位： | (广西林业科学研究所，南宁) |
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| 摘 要： | 本文研究了黄枝油杉Keteleeria calcarea Cheng et L．K．Fu．和矩鳞油杉Keteleeria
oblonga Cheng et L. K. Fu. 的核型。 并与江南油杉 K．cyclolepis Flous．和台湾油杉 K.
formosana Mast. 的核型比较，讨论四种油杉核型进化趋势。 黄枝油杉核型公式K(2n)=
24＝16m+8sm;矩鳞油杉核型公式K(2n)=24＝18m+6sm。 黄枝油杉在第1、3、6号
染色体短臂上具次缢痕;而矩鳞油杉在第2、4、6号染色体短臂上具次缢痕。二者均属较对称 的“2A“核型。 四种油杉核型进化趋势是江南油杉→矩鳞油杉→黄枝油杉→台湾油杉。
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| 关 键 词： | 黄枝油杉 矩鳞油杉 核型 |
A Study on the Karyotype in Keteleeria calcarea and K. oblonga |
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| Chen Wei-Sin,Ye Zhi-Yun,Cai Ling.A Study on the Karyotype in Keteleeria calcarea and K. oblonga[J].Journal of the Graduate School of the Chinese Academy of Sciences,1989,27(1):49-52. |
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| Authors: | Chen Wei-Sin Ye Zhi-Yun Cai Ling |
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| Institution: | (Guangxi lnstitute of Forestry Science. Nanning) |
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| Abstract: | In the present paper the karyotypes of Keteleeria calcarea Cheng et L. K. Fu and
K. oblonga Cheng et L. K. Fu are reported, and they are compared with those of K. cyclolepis
Flous and K. formosana Mast. The karyotype formula of K. calcarea Cheng et L. K. Fu is
K(2n)=24=16m+8sm, and K. oblonga Cheng et L. K. Fu is K(2n)=24=18m+6sm. They
both belong to “2A” type of karyotype symmetry. There are secondary constrictions on the
short arms of 1th, 3th, 6th chromosome pairs in K. calcarea Cheng et L. K. Fu and 2th, 4th,
6th in K. oblonga Cheng et L. K. Fu. K. oblonga Cheng et L. K. Fu is more advanced than K.
cyclolepis Flous, but more primitive than K. calcarea Cheng et L. K. Fu, and K. formosana
Mast is the most advanced among the four species in karyotype. |
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| Keywords: | Keteleeria calcarea Cheng et L K Fu K oblonga Cheng et L K Fu Karyotype |
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