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分子植物育种
(
网络版
), 2011
,
9
,
1642
-
1646
Fenzi Zhiwu Yuzhong (Online), 2011, Vol.9, 1642
-
1646
http://mpb.
5th
.sophiapublisher.com
1642
研究报告
Research Report
烤烟净叶黄的赤星病抗性遗传分析及
SSR
标记
蒋彩虹
,
王元英
,
罗成刚
,
杨爱国
,
任民
,
王静
,
王绍美
中国农业科学院烟草研究所
,
青岛
, 266101
通讯作者
:
ctsqz@163.net
作者
分子植物育种
, 2011
,
9
,
90
doi: 10.5376/mpb.cn.2011.09.0090
收稿日期:
2011
05
12
接受日期:
2011
06
29
发表日期:
2011
07
06
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
(
中文
)
蒋彩虹等
, 2011,
烤烟净叶黄的赤星病抗性遗传分析及
SSR
标记
,
分子植物育种
(online) Vol.9 No.90 pp.1642-1646 (doi: 10.5376/mpb.
cn.2011.09.0090)
引用格式
(
英文
)
Jiang et al., 2011, Genetic Analysis of Cured Tobacco Jing-yehuang on Tobacco Brown Spot and Resistant Locus Mapping with SSR Markers, Fenzi
Zhiwu Yuzhong (online) (Molecular Plant Breeding) Vol.9 No.90 pp.1642-1646 (doi: 10.5376/mpb.cn.2011.09.0090)
本研究的目的有两个:一是研究净叶黄对赤星病抗性的遗传规律,二是筛选出与此抗病基因连锁的
SSR
标记。试
验以抗赤星病品种净叶黄和感赤星病品种
NC82
为亲本,构建
F
1
F
2
BC
1
代群体,并进行赤星病接种鉴定和抗性遗传分析,
结果表明净叶黄对赤星病的抗性由显性加性基因控制。依据混合群体分组分析法
(BSA
)
,从
F
2
代群体植株中选取单株建
立赤星病抗感基因池,利用
280
SSR
引物进行分子标记分析,得到标记
SR1160
与来源于净叶黄的赤星病抗性基因有连锁
关系,遗传距离为
9.37 cM
,该标记可用于抗赤星病育种的辅助选择。
关键词
烟草
;
赤星病
; SSR;
抗性遗传分析
Genetic Analysis of Cured Tobacco Jing-yehuang on Tobacco Brown Spot and
Resistant Locus Mapping with SSR Markers
Jiang Caihong , Wang Yuanying , Luo Chenggang , Yang Aiguo , Ren Min , Wang Jing , Wang
Shaomei
Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao, 266101, P.R. China
Corresponding author, ctsqz@163.net;
Authors
Abstract
The study was mainly aiming to two parts: (1) Testing the hereditary pattern of the Brown Spot resistant genes from
Jing-yehuang; (2) Establishing F
2
population and using bulked segregant analysis to screen SSR markers linked to the resistant genes.
It was carried out using F
1
, F
2
, BC
1
populations from a cross between Tobacco Brown Spot resistant variety Jing-yehuang and
susceptible variety NC82. They were identified by artificial inoculation and the inheritance of resistance were analyzed. Results
showed that the resistant character of Jing-yehuang is not controlled by single gene. DNAs of F
2
population were extracted to
develop into a resistant pool and a sensitive pool based on the BSA. 280 pairs SSR primers were used for molecular marker analysis.
The results show that the genetic distance between SR1160 and resistant gene from Jing-yehuang is 9.37 cM. This characteristic SSR
marker can be used in marker assisted selection.
Keywords
Tobacco; Tobacco Brown Spot; SSR; Genetic analysis of resistance
研究背景
烟草
(
Nicotiana tabaccum
)
不仅是一种模式植物,
更是一种重要的叶用经济作物,在我国国民经济中
占有重要地位。烟草叶部病害,尤其是烟草赤星病
(
Alternaria alternata
)
直接危害成熟叶片,不仅造成烟
叶产量的重大损失,而且造成烟叶质量下降,如烟
叶化学成分失调、口感变差等,降低了烟叶使用价
值,若遇上适宜赤星病发病的气候,极易造成大面
积流行,使烟草生产遭受重大的损失。近年来生产
上已有一些抗赤星病品种使用,但由于该抗性与不
利的品质性状连锁,目前抗病品种的数量和抗性水
平还不能满足烟叶生产的要求,仍然需要大量使用