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白楠和闽楠染色体核型分析(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2013年05期
Page:
157-160
Column:
研究简报
publishdate:
2013-09-30

Article Info:/Info

Title:
Analysis of chromosome karyotypes in Phoebe neurantha and P. bournei
Article ID:
1000-2006(2013)05-0157-04
Author(s):
LIU Yuxiang1SONG Xiaochen2JIANG Xiangmei12*
1.College of Landscape and Art of Jiangxi Agricultural University, Nanchang 330045, China;
2.Camphor Engineering and Technology Research Center for State Forestry Bureau, Jiangxi Forestry Academy, Nanchang 330032, China
Keywords:
Phoebe neurantha P. bournei chromosome karyotype analysis
Classification number :
Q949.747.5; S722
DOI:
10.3969/j.issn.1000-2006.2013.05.030
Document Code:
A
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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Last Update: 2013-09-30