分子植物育种
(
网络版
), 2012
年
,
第
10
卷
,
第
1199
-
1205
页
Fenzi Zhiwu Yuzhong (Online), 2012, Vol.10, 1199
-
1205
http://mpb.5th.sophiapublisher.com
1199
研究报告
A Letter
云南省
222
个玉米新品种
DNA
指纹图谱构建和遗传多样性分析
吴毅歆
1*
,
刘春明
2*
,
毛自朝
1
,
李学进
3
,
何月秋
1,2
1.
云南农业大学农学与生物技术学院
,
昆明
, 650201
2.
云南农业大学农业生物多样性应用技术国家工程研究中心
,
昆明
, 650201
3.
云南省农业厅种子管理站
,
昆明
, 650031
*
共同第一作者
通讯作者
:
ynfh2007@163.com
作者
分子植物育种
, 2012
年
,
第
10
卷
,
第
28
篇
doi: 10.5376/mpb.cn.2012.10.0028
收稿日期:
2012
年
05
月
08
日
接受日期:
2012
年
05
月
15
日
发表日期:
2012
年
06
月
13
日
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
)
:
吴毅歆等
, 2012,
云南省
222
个玉米新品种
DNA
指纹图谱构建和遗传多样性分析
,
分子植物育种
(online) Vol.10 No.28 pp.1199-1205 (doi:10.5376/
mpb.cn.2012.10.0028)
引用格式
(
英文
)
:
Wu et al., 2012, Establishment of DNA Fingerprinting Map and Genetic Analysis of 222 New Maize Cultivars in Yunnan Province, Fenzi Zhiwu Yuzhong
(online) (Molecular Plant Breeding) Vol.10 No.28 pp.1199-1205 (doi: 10.5376/mpb.cn.2012.10.0028)
摘
要
利用
SSR
标记研究
222
个云南省玉米新品种的种子纯度、遗传多样性,并构建了
DNA
指纹图谱。结果表明,
92.79%
品种纯度达
90%
以上,
7.21%
品种纯度低于
90%
。
20
对引物共检测出
115
个等位基因数,平均每个标记
5.75
个,变幅
3~9
个;平均有效等位基因总数为
4.256 6
个,变幅
1.964 8~7.333 5
个;多样性指数
(I)
平均值
1.508 7
,变化幅度
0.851 5~2.042 1
;
多态性信息含量
(PIC)
平均值为
0.729 0
,变动范围
0.491 1~0.863 6
;标记索引指数
(MI)
平均值为
4.317 5
,变幅
1.473 3~7.707 0
。
222
个品种之间的遗传相似性系数变异范围为
0.482 1~0.982 1
,平均遗传相似性系数为
0.655 6
,其中遗传相似性系数大于
0.600 0
的品种对占供试品种对的
86.68%
,表明供试品种之间的亲缘关系较近,遗传基础狭窄。
UPGMA
聚类分析果表明,
在遗传相似系数为
0.648 5
处,
222
个供试品种划分为
5
个类群,其中类群Ⅰ、类群Ⅱ包括
189
品种,占测试品种总数的
85.14%
,
表明供试品种遗传遗传背景比较单一。
关键词
玉米
;
简单重复序列
; DNA
指纹
;
遗传分析
Establishment of DNA Fingerprinting Map and Genetic Analysis of 222 New
Maize Cultivars in Yunnan Province
Wu Yixin
1*
, Liu Chunming
2*
, Mao Zichao
1
, Li Xuejing
3
, He Yueqiu
1,2
1. School of Agriculture and Biological technology, Yunnan Agricultural University (YAU), Kunming, 650201
2. National Engineering Center for Agricultural Biodiversity, YAU, Kunming, 650201
3. Seed Management Station, Agriculture Department of Yunnan Province, Kunming, 650031
*These authors contributed equally to this paper
Corresponding author, ynfh2007@163.com;
Authors
Abstract
The purities, genetic diversities of 222 new maize cultivars in Yunnan Province were researched with Simple sequence
repeats (SSR) markers and DNA fingerprinting map was established. The results show that 92.79% of cultivars have purities higher
than 90% and 7.21% of them have purities lower than 90%. 20 pairs of primers produced 115 amplified polymorphic fragments. The
average number of alleles per SSR locus is 5.75 with a range from 3 to 9. The average number of effective alleles per SSR locus is
4.256 6 with a range from 1.964 8 to 7.333 5. The Shannon's information index (I) for the SSR loci varied from 0.851 5 to 2.042 1
with an average of 1.508 7. The polymorphism information content (PIC) for the SSR loci varied from 0.491 1 to 0.863 6 with an
average of 0.729 0. The marker index (MI) for the SSR loci varied from 1.473 3 to 7.707 0 with an average of 4.317 5. Genetic
similarity coefficient (GSC) among the 222 new maize cultivars ranged from 0.482 1 to 0.982 1 with an average of 0.655 6, and
those cultivars whose GSC is above 0.600 0 accounted for 86.68%. This indicates that there is a closerelationship among different
cultivars and the genetic base is narrow for detected cultivars. The cluster analysis shows that the cultivars could be classified into 5
distinct clusters when GSC is 0.648 5. Moreover, group
Ⅰ
and group
Ⅱ
include 189 cultivars, accounting for 85.14% of all cultivars,
and that indicates the genetic base of all cultivars is uniform.
Keywords
Maize; Simple sequence repeat (SSR); DNA fingerprinting; Genetic analysis