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分子植物育种
(
网络版
), 2012
,
10
,
1323
-
1330
Fenzi Zhiwu Yuzhong (Online), 2012, Vol.10, 1323
-
1330
http://mpb.5th.sophiapublisher.com
1323
研究报告
Research Report
亲本未知的棉花
F
1
杂种及其
F
2
单株的
SSR
分子鉴定
付小琼
,
叶武威
中国农业科学院棉花研究所
,
棉花生物学国家重点实验室
,
安阳
, 455000
通讯作者
:
fuxq@cricaas.com.cn
作者
分子植物育种
, 2012
,
10
,
44
doi: 10.5376/mpb.cn.2012.10.0044
收稿日期:
2012
05
26
接受日期:
2012
06
13
发表日期:
2012
09
27
本文首次发表在《分子植物育种》
(2012
年第
10
卷第
5
600-606
)
上。现依据版权所有人授权的许可协议,采用
Creative Commons Attribution
License
协议对其进行授权,再次发表与传播。只要对原作有恰当的引用
,
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
)
付小琼等
, 2012,
亲本未知的棉花
F
1
杂种及其
F
2
单株的
SSR
分子鉴定
,
分子植物育种
(online) Vol.10 No.44 pp.1323-1330 (doi:
10.5376/mpb.cn.2012.10.0044)
引用格式
(
英文
)
Fu et al., 2012, Identification of F
1
Hybrid and F
2
Individual in Cotton with Unknown Parents, Fenzi Zhiwu Yuzhong (online) (Molecular Plant Breeding)
Vol.10 No.44 pp. 1323-1330 (doi: 10.5376/mpb.cn.2012.10.0044)
在棉花品种区域试验中,杂交种纯度的分子检测一直是比较困难的课题,尤其是在亲本未知的情况下,杂交种的
纯度的分子检测研究尚未见报导。本研究利用
17
SSR
核心引物对参试品种邯
6402
F
1
进行纯度检测,
SSR
标记纯度达
100%
17
对引物中有
12
对呈现共显性,
5
对引物为非共显性。同时,构建了
F
1
SSR
指纹图谱,以此可以鉴定邯
6402
真实性。继续用这些引物对
F
2
44
株棉苗进行检测,
F
2
群体棉苗均有不同程度的分离,绝大部分基因型为杂合体,许多位
点显示共显性,且共显性位点互不相同,在分子水平上验证了
F
2
群体的杂合状态。应用这一套
SSR
核心引物,能够在室内
鉴定棉花杂交种的真实性和纯度,还能够鉴别是
F
1
杂交种还是
F
2
分离群体,比对杂交种的指纹图谱能检测出
F
1
中掺杂成分。
关键词
棉花
; SSR
核心引物
; SSR
标记纯度
;
指纹图谱
;
分子鉴定
Identification of F
1
Hybrid and F
2
Individual in Cotton with Unknown Parents
Fu Xiaoqiong , Ye Wuwei
State Key Laboratory of Cotton Biology, Cotton Research Institute, Chinese Academy of Agricultural Sciences, Anyang, 455000
Corresponding author, fuxq@cricaas.com.cn;
Authors
Abstract
Molecular identification for the hybrid purity is very crucial task in regional trial of cotton varieties, particularly it was
not yet to be reported in the case of unknown parents for the hybrid purity by molecular detection. In this study, 17 pairs of SSR core
primers were employed to identify the F
1
purity of Han6402, the purity based on SSR marker reached 100%. 12 of the 17 pair
primers exhibited co-dominant banding pattern, while 5 of them were non-dominant banding pattern. Moreover, we built an F
1
SSR
fingerprinting profile that can identify the authenticity of Han6402 in this research. By using these primers to detect 44 F
2
individual
seedlings, the results exhibited the separation at different extent, in which the majority of genotypes were heterozygous wit h
co-dominant in most of the loci that were different from each other. The results validated the F
2
population underlying the
heterozygous status at the molecular level. We may have conclusion that the set of SSR core primers should apply to in-house
identification for the authenticity and purity of cotton hybrids, which not only can be able to distinguish the F
1
hybrid or F
2
segregating individual, but also to detect volunteer seeds as fake F
1
hybrid seed in cotton hybrid industry based on the hybrid
fingerprinting.
Keywords
Cotton; SSR core primer; SSR marker based purity; DNA fingerprinting; Molecular identification
研究背景
杂交棉比常规棉品种增产幅度大,纤维品质较
优,抗逆性强,特别是前期长势旺,抗苗病能力强,
因此杂交棉品种在棉花生产中得到迅速的推广利
用,深受棉农的认可。但是,近几年来棉种市场
F
2
代冒充
F
1
代杂种,或者在
F
1
代杂种中掺有大
量亲本种子的事实不断出现,使棉农蒙受损失。因
此,如何鉴别棉种的真伪、品种纯度是一个亟待解
决的问题
(
付小琼等
, 2009)
通常,棉种的真实性和纯度鉴定是常规的田间
DUS
特异性
(Distinctness)
、一致性
(Uniformity)
和稳
定性
(Stability)
测试检测,这种方法周期长,且易受
环境条件的影响。
20
世纪
90
年代,随着分子生物
学技术的快速发展,利用分子标记使室内鉴定品种