Page 6 - 2010no4

Basic HTML Version

分子植物育种
(
网络版
), 2010
,
8
,
4
Fenzi Zhiwu Yuzhong (Online), 2010, Vol.8, No.4
http://mpb.
5th
.sophiapublisher.com
6
页,第
1
研究论文
Research Article
小麦抗白粉病基因
Pm21
EST-SSR
STS
标记
亓晓蕾
1
,
崔法
,
余利
1
,
丁安明
1
,
李君
1
,
陈桂玲
1
,
王洪刚
1,2
1.
作物生物学国家重点实验室
,
山东农业大学
,
泰安
, 271018
2.
国家小麦改良中心泰安分中心
,
山东农业大学
,
泰安
, 271018
通讯作者
:
hgwang@sdau.edu.cn;
作者
分子植物育种
, 2010
,
8
,
4
doi: 10.5376/mpb.cn.2010.08.0004
收稿日期:
2010
5
6
接受日期:
2010
6
10
发表日期:
2010
9
28
这是一篇开放阅取的论文,其论文发布和传播接受
所有条款。只要对本原作有恰当的引用,版权所有
人允许和同意第三方无条件的使用、传播以及任何媒介的复制或再制作。
本文首次发表在《
Molecular Plant Breeding
Online
期刊上。本文是依据
协议,用中文再次发表与传播,
如果读者对中文含义有歧义的话,请以英文原文为准。如果任何人要引用本研究内容,建议的引用格式如下:
Qi et al 2010, Molecular Tagging Wheat Powdery Mildew Resistance Gene
Pm21
by EST-SSR and STS Markers, Molecular Plant Breeding Vol.1 No.4
(doi: 10.5376/mpb.2010.01.0004)
摘要
为丰富抗白粉病基因
Pm21
的分子标记类型,方便分子标记辅助育种,本研究利用含有抗白粉病基因
Pm21
的小麦种
质系
CB033
和感染小麦白粉病的普通小麦品种辉县红杂交构建
F
2
分离群体,采用优选小群体分析法进行了分子标记筛选。
结果表明,在定位于小麦第六部分同源群的
258
SSR
EST-SSR
STS
标记中,
102
个标记能在亲本间揭示出多态性差
异,
2
EST-SSR
标记
(
Xcfe164
,
Xedm129
)
1
STS
标记
(
Xcinau188
)
可在优选小群体中能扩增出特异性谱带;利用
F
2
群体
进行标记连锁分析,获得
EST-SSR
标记
Xcfe164
Xedm129
STS
标记
Xcinau188
它们与抗白粉病基因
Pm21
的连锁距离
分别是
3.75 cM
1.26 cM
0.98 cM
。利用
F
2:3
家系对
3
个标记进行验证,结果证明:它们是
Pm21
基因可靠的分子标记,
适合用于
Pm21
基因的分子标记辅助选择。
关键词
Pm21
;
优选小群体
;
分子标记
; EST-SSR; STS
Molecular Tagging Wheat Powdery Mildew Resistance Gene
Pm21
by EST-SSR
and STS Markers
Xiaolei Qi
1
, Fa Cui
1
, Li Yu
1
, Anming Ding
1
, Jun Li
1
, Guiling Chen
1
, Honggang Wang
1,2
1. State Key Laboratory of Crop Biology, Shand
ong Agricultural University, Tai’an, 271018
2. Tai’an Subcenter of National Wheat Improvement Center, Agronomy College of Shandong Agricultural University, Tai’an, 27101
8
Corresponding author, hgwang@sdau.edu.cn;
Authors
This article was first published in Molecular Plant Breeding, and was distributed in Chinese under the terms of th
Abstract
In order to enrich the molecular markers linked to wheat powdery mildew resistance gene
Pm21
and facilitate the
molecular marker-assisted selection in multi-background breeding procedure, preferred small groups (PSG) analysis was conducted
using
F
2
segregating population cross between the wheat germplasm line CB033 with
Pm21
and a common wheat variety
Huixianhong (susceptible to wheat powdery mildew). One hundred and two markers revealed polymorphism between the parents
when screening with 258 SSR or STS markers located on wheat homoeologous group VI, and two EST-SSR markers (
Xcfe164
and
Xedm129
) and one STS marker (
Xcinau188
) showed good consistency between the genotype and the phenotype to mildew in PSG.
Linkage relationship between
Pm21
and molecular markers of
Xcfe164
,
Xedm129
and
Xcinau188
were then established, with the
distance 3.75 cM, 1.26 cM and 0.98 cM respectively. Authenticity verification of the linkage between
Pm21
and molecular markers
were tested via F
2: 3
families and results showed that the three markers were reliable new markers linked to
Pm21
. The results above
would facilitate molecular marker-assisted selection in breeding program.
Keywords
Rice
Pm21
; Preferred small group (PSG); Molecular marker-assisted selection (MAS)