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分子植物育种
(
网络版
), 2011
,
9
,
1297
-
1304
Fenzi Zhiwu Yuzhong (Online), 2011, Vol.9, 1297
-
1304
http://mpb.
5th
.sophiapublisher.com
1297
研究报告
A Letter
23
份烟草品种遗传关系的
SSR
分析
肖炳光
1
,
高玉龙
1
,
吴为人
2,3
1.
云南省烟草农业科学研究院
,
玉溪
, 653100
2.
浙江大学农业与生物技术学院
,
杭州
, 310029
3.
福建农林大学生命科学学院
,
福州
, 350002
通讯作者
:
xiaobg@263.net;
作者
分子植物育种
, 2011
,
9
,
39
doi: 10.5376/mpb.cn.2011.09.0039
收稿日期:
2010
10
08
接受日期:
2011
03
28
发表日期:
2011
04
08
这是一篇采用
Creative Commons Attribution License
进行授权的开放取阅论文。只要对本原作有恰当的引用
,
版权所有人允许并同意第三方无条
件的使用与传播。
引用格式:
肖炳光等
, 2011, 23
份烟草品种遗传关系的
SSR
分析
,
分子植物育种
Vol.9 No.39 (doi: 10.5376/mpb.cn.2011.09.0039)
本研究利用
SSR
标记分析了
23
份烟草品种的遗传关系。以
8
个烟草品种为材料从
1 998
SSR
引物中筛选出
700
对有稳定多态的引物,在
23
个烟草品种中检测出
1 600
个等位基因,平均每对引物检测的等位基因数为
2.29
个。
23
个烟草
品种间遗传相似系数
(GS)
的变化范围为
0.65~0.98
、平均为
0.79
,其中烤烟品种间遗传相似系数在
0.77~0.98
之间、平均为
0.86
我国烤烟主栽品种遗传基础非常狭窄,应充分利用净叶黄等地方品种作为亲本来拓宽育成品种的遗传基础。由于我国烤烟品
种大多以美国引进品种为直接或间接亲本选育而成,故在聚类分析时与从美国引进的烤烟品种并未聚为各自类别。津巴布韦
烤烟主栽品种或后备品种与我国烤烟主栽品种之间的遗传关系相对较远,我国可适当引进种植一定面积的津巴布韦烤烟品
种,以在一定程度上缓解生产上种植品种单一化的矛盾。
关键词
烟草
; SSR
标记
;
遗传关系
Analysis of Genetic Relationships Among Twenty-three Tobacco Varieties Based
on Simple Sequence Repeat (SSR) Marker
Xiao Bingguang
1
, Gao Yulong
1
, Wu Weiren
2,3
1. Yunnan Acedemy of Tobacco Agricultural Sciences, Yuxi, 653100, P.R. China
2. College of Agriculture & Biotechnology, Zhejiang University, Hangzhou, 310029, P.R. China
3. School of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, 350002, P.R. China
Corresponding author, xiaobg@263.net;
Authors
Abstract
Genetic relationships among 23 tobacco varieties were analyzed using simple sequence sepeat (SSR) markers. 700
polymorphic primer pairs were selected from 1998 tobacco SSR primer pairs based on 8 varieties, and 1600 alleles were amplified in
23 cultivars using the 700 SSR primer pairs, with 2.29 alleles per marker on average. Genetic similarity coefficients (GS) between
the 23 varieties ranged from 0.65 to 0.98, with an average of 0.79, and GS between the flue-cured tobacco varieties ranged from 0.77
to 0.98, with an average of 0.86. The genetic base of the flue-cured tobacco cultivars grown over China is extremely narrow,
suggesting that the local varieties, such as Jingyehuang, should be used as parents to widen the genetic base. Because most of the
flue-cured tobacco varieties in China were developed directly or indirectly using the varieties introduced from USA as parents, they
were not clustered into a different class from the varieties introduced from USA in the clustering analysis. There are relatively distant
genetic relationships between the flue-cured tobacco varieties from Zimbabwe and those from China, suggesting that the flue-cured
tobacco cultivars introduced from Zimbabwe can be grown in China to reduce the possible risk caused by planting the varieties with
similar genetic background.
Keywords
Tobacco; SSR marker; Genetic Relationship
研究背景
我国是世界上最大的烟草生产国和消费国,但
在烟草育种上却面临着过度依赖主体亲本、育成品
种遗传基础狭窄等问题
(
王元英等
, 1995)
。多样化的
种质资源及合理的亲本选配是育种计划成功的关
(Renganayaki et al., 2001)
,从分子水平上研究种
质资源的遗传多样性及其亲缘关系,有助于客观了
解种质资源的丰富程度及现有品种的遗传背景。
近年来,国内外利用分子标记技术对烟草种质
资源进行了大量研究
(
何川生等
, 2000;
杨本超等
,