白楠和闽楠染色体核型分析

刘玉香; 宋晓琛; 江香梅

doi:10.3969/j.issn.1000-2006.2013.05.030

白楠和闽楠染色体核型分析

刘玉香,宋晓琛,江香梅,*

南京林业大学学报（自然科学版） ›› 2013, Vol. 37 ›› Issue (05) : 157-160.

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南京林业大学学报（自然科学版） ›› 2013, Vol. 37 ›› Issue (05) : 157-160. DOI: 10.3969/j.issn.1000-2006.2013.05.030

研究简报

白楠和闽楠染色体核型分析

刘玉香¹, 宋晓琛², 江香梅¹,²*

作者信息 +

Analysis of chromosome karyotypes in Phoebe neurantha and P. bournei

LIU Yuxiang¹,SONG Xiaochen²,JIANG Xiangmei¹,²*

Author information +

文章历史 +

摘要

采用染色体常规压片法, 对白楠(Phoebe neurantha)和闽楠(P. bournei)的染色体进行了观察分析，结果表明：白楠的染色体数目为2n=24, 其核型公式为K(2n)=2x=24=20m+4sm, 染色体相对长度组成为6L+4M2+10M1+4S, 核不对称系数为57.58%；闽楠染色体数目为2n=24, 核型公式为K(2n)=2x=24=24m, 染色体相对长度组成为6L+4M2+12M1+2S, 核不对称系数为54.96%。两者均为二倍体, 染色体主要由中部和近中部着丝点染色体组成。白楠属于Stebbins核型分类中的“2B”型, 闽楠为“2A”型。

Abstract

The chromosomes in Phoebe neurantha and P. bournei were detected and analyzed by common squash and microphotography methods. The results indicated that the number of the somatic chromosome in P. neurantha was 2n=24, and its karyotype formula was K(2n)=2x=24=20m+4sm, the constitution of relative length of chromosome was 6L+4M2+10M1+4S, and the asymmetry index was 5758%. The number of the somatic chromosome in P. bournei was 2n=24, and its karyotype formula was K(2n) =2x= 24=24m; the constitution of relative length of chromosome was 6L+4M2+12M1+2S; the asymmetry index was 54.96%. The chromosomes of the two species were diploid, and were mainly metacentric and submetacentric. Based on the Stebbins classic method, the karyotype of P. neurantha belongs to “2B” type, and the P. bourneiis belongs to “2A” type.

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刘玉香,宋晓琛,江香梅,*. 白楠和闽楠染色体核型分析[J]. 南京林业大学学报（自然科学版）. 2013, 37(05): 157-160 https://doi.org/10.3969/j.issn.1000-2006.2013.05.030

LIU Yuxiang,SONG Xiaochen,JIANG Xiangmei,*. Analysis of chromosome karyotypes in Phoebe neurantha and P. bournei[J]. JOURNAL OF NANJING FORESTRY UNIVERSITY. 2013, 37(05): 157-160 https://doi.org/10.3969/j.issn.1000-2006.2013.05.030

中图分类号： Q949.747.5 S722

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基金

收稿日期：2012-08-01修回日期：2012-12-28 基金项目：国家林业公益性行业科研专项项目(201004073);江西省财政重大科研专项项目(2011510101) 第一作者：刘玉香,硕士生。 *通信作者：江香梅,研究员。 Email： xiangmeijiang@yahoo.com.cn。引文格式：刘玉香, 宋晓琛, 江香梅. 白楠和闽楠染色体核型分析[J]. 南京林业大学学报：自然科学版，2013，37（5）：157-160.