https://www.ahs.ac.cn/images/0513-353X/images/top-banner1.jpg|#|苹果
https://www.ahs.ac.cn/images/0513-353X/images/top-banner2.jpg|#|甘蓝
https://www.ahs.ac.cn/images/0513-353X/images/top-banner3.jpg|#|菊花
https://www.ahs.ac.cn/images/0513-353X/images/top-banner4.jpg|#|灵芝
https://www.ahs.ac.cn/images/0513-353X/images/top-banner5.jpg|#|桃
https://www.ahs.ac.cn/images/0513-353X/images/top-banner6.jpg|#|黄瓜
https://www.ahs.ac.cn/images/0513-353X/images/top-banner7.jpg|#|蝴蝶兰
https://www.ahs.ac.cn/images/0513-353X/images/top-banner8.jpg|#|樱桃
https://www.ahs.ac.cn/images/0513-353X/images/top-banner9.jpg|#|观赏荷花
https://www.ahs.ac.cn/images/0513-353X/images/top-banner10.jpg|#|菊花
https://www.ahs.ac.cn/images/0513-353X/images/top-banner11.jpg|#|月季
https://www.ahs.ac.cn/images/0513-353X/images/top-banner12.jpg|#|菊花

园艺学报 ›› 2003, Vol. 30 ›› Issue (4): 463-464.

• 研究报告 • 上一篇    下一篇

洋葱染色体核型的FISH分析

赵泓 Schrader R.Ahne
  

  1. ( 北京市农林科学院蔬菜研究中心,北京100089; 德国栽培植物育种研究所,106484)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2003-08-25 发布日期:2003-08-25

Zhao Hong, Sehrader,and R.Ahne   

  1. ( Research Center,Bijing100089,China; Federal Centrefor Breeding Research on Plants,01484,Germany)
  • Received:1900-01-01 Revised:1900-01-01 Online:2003-08-25 Published:2003-08-25

摘要: 挑选洋葱(Allium cepa L.) (2n=2x=16,CC)有丝分裂中期细胞,以洋葱卫星DNA序列
(AC—SAT-DNA)为探针,DIG-1 1-dUTP为标记物,用荧光原位杂交(FISH)方法观察其在染色体上的定位,并进行洋葱的核型分析。6号染色体为近端部着丝点染色体,在其长臂末端有一个卫星DNA序列的主要位点。其余每条染色体在其长、短臂的末端都各具有一个主要位点。差异表现在各染色体上卫星DNA序列的次要位点分布不同。根据洋葱8对染色体各自具有的独特的卫星DNA分布位点,可将洋葱8对染色体全部分开。以此为基础,构建了洋葱卫星DNA在染色体上分布的模式图。

关键词: 洋葱, 染色体, 卫星DNA, FISH, 核型

Abstract: In order to identify each pair chromosomes of Allium cepa L.,We used a simplified fluorescence in situ hybridization technique to localize the satellite DNA loci in metaphase cells of Allium cepa L.The resulting hybridization patterns enabled all onion chromosome pairs to be identified.Chromosome 6-C is all acroeentric chro.mosome. Unlike the others,it has only one main locus at the end of its long arf1.Every pair of the whole chromosome8 has its own special spotting pattem,by which the 8 pairs of onion chromosomes earl be evidently identified.Thus,we made karyotype analysis ofthe genome.AC—SAT-DNA is a good probe for A.cepa L.ehro ana1.ysis.

Key words: Allium cepa L., Chromosome, Satellite DNA, FISH, type

中图分类号: