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分子植物育种
(
网络版
), 2011
,
9
,
1556
-
1564
Fenzi Zhiwu Yuzhong (Online), 2011, Vol.9, 1556
-
1564
http://mpb.
5th
.sophiapublisher.com
1556
研究论文
Research Article
SRAP
技术在桃
(
Prunus persica
L.)
遗传多样性研究上的应用
刘硕
1,3
,
刘冬成
2
,
刘威生
3
,
章秋平
3
,
刘有春
1
,
赵剑波
4
,
李绍华
5
,
张爱民
2
,
李宝江
1
1.
沈阳农业大学园艺学院
,
沈阳
, 110161
2.
中国科学院遗传与发育生物学研究所
,
北京
, 100101
3.
辽宁省果树科学研究所
,
营口
, 115009
4.
北京市农林科学院林业果树研究所
,
北京
, 100093
5.
中国科学院武汉植物园
,
武汉
, 430074
通讯作者
: amzhang@genetics.ac.cn, libaojiang@hotmail.com;
作者
分子植物育种
, 2011
,
9
,
76
doi: 10.5376/mpb.cn.2011.09.0076
收稿日期:
2011
03
12
接受日期:
2011
05
16
发表日期:
2011
06
16
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:
刘硕等
, 2011, SRAP
技术在桃
(
Prunus persica
L.)
遗传多样性研究上的应用
,
分子植物育种
Vol.9 No.76 (doi: 10.5376/mpb.cn.2011.09.0076)
序列相关扩增多态性标记
(SRAP)
是一种基于
PCR
技术的新型分子标记,具有多态性高、重复性好、操作技术简单、
成本低等优点,被广泛用于遗传图谱构建、比较基因组学、基因定位和遗传多样性分析等领域。本研究以
48
个桃品种为试
材,采用
SRAP
技术对桃品种的遗传多样性进行分析,筛选出
28
对多态性丰富的引物组合,共产生
864
条扩增带,其中有
379
条多态性条带;每对引物平均产生
31
条扩增带,其中有
14
条多态性带,平均多态性比例为
44.1%
,平均
PIC
指数为
0.28
对不同类群和来源的遗传距离分析发现,黄肉桃的平均遗传距离最大而硬肉普通桃最小,中国地方品种平均遗传距离最大而
中国选育品种的遗传距离只有
0.28
,说明我国选育品种的遗传基础比较狭窄,需要在育种过程中广泛地使用各种类型的桃种
质材料,丰富培育品种的遗传基础。经
NT-sys
聚类,将
48
个桃品种材料划分为
9
个层次,
14
个类群,平均相似系数为
0.57
分析结果较好地反应了参试桃资源间的遗传、地理起源及果型、果肉颜色等生物学性状的遗传多样性,表明
SRAP
标记可以
用于桃品种的鉴定、遗传多样性及遗传图谱构建的研究中。
关键词
; SRAP;
多态性
;
相关性
;
遗传多样性
Application of SRAP Marker on Genetic Diversity of Peach Cultivars (
Prunus
persica
L.)
Liu Shuo
1,3
, Liu Dongcheng
2
, Liu Weisheng
3
, Zhang Qiuping
3
, Liu Youchun
1
, Zhao Jianbo
4
, Li
Shaohua
5
, Zhang Aimin
2
, Li Baojiang
1
1.College of Horticulture, Shenyang Agricultural University, Shenyang, 110161, P.R. China
2.Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100101, P.R. China
3.Liaoning Institute of Pomology, Yingkou, 115009, P.R. China
4.Research Institute of Forestry and Pomology, Beijing Academy of Agricultural and Forestry Sciences, Beijing, 100093, , P.R. China
5.Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, 430074, P.R. China
Corresponding author, amzhang@genetics.ac.cn, libaojiang@hotmail.com;
Authors
Abstract
Sequence-related amplified polymorphism (SRAP) is a new marker technique, which has the advantages of high
polymorphism, simplicity, reliability and low cost, and has been widely exploited in construction of genetic map, comparative
genomics, gene tagging and genetic diversity analysis. In this study, SRAP markers were used to evaluate the genetic diversity in 48
peach cultivars, originated from different countries. 28 SRAP primer combinations produced a total of 864 fragments with an average
of 14 polymorphic fragments per primer combination and an average of polymorphism information content (PIC) of 0.28. The
averaged genetic distance of different groups and origins shows that the yellow fleshed peach cultivars have the biggest averaged
genetic distance, while the crisp cultivars have the lowest one. The averaged genetic distance in Chinese improved cultivars is only
0.28, much lower than that in Chinese local cultivars, which shows the narrow genetic diversity in improved cultivars, indicating that
all kinds of peach germplasm should be incorporated in Chinese peach breeding program. Cluster analysis by the unweighted pair
group method with arithmetic averaging (UPGMA) with NT-sys2.10e placed 48 peach cultivars into 9 levels, including 14 groups,
with an average similarity coefficient of 0.57. The result reveals that the SRAP marker could be used to study the descendiblity,