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分子植物育种
(
网络版
), 2011
,
9
,
1209
-
1216
Fenzi Zhiwu Yuzhong (Online), 2011, Vol.9, 1209
-
1216
http://mpb.
5th
.sophiapublisher.com
1209
研究报告
A Letter
辣椒属栽培种、野生种和种间杂交后代的
SRAP
分析
周坤华
1,2
,
方荣
1
,
陈学军
1
1.
江西省农业科学院蔬菜花卉研究所
,
南昌
, 330200
2.
江西省农科院油料作物重点实验室
,
南昌
, 330200
通讯作者
:
19889766@163.com;
作者
分子植物育种
, 2011
,
9
,
29
doi: 10.5376/mpb.cn.2011.09.0029
收稿日期:
2010
12
09
接受日期:
2011
03
10
发表日期:
2011
03
15
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:
周坤华等
, 2011,
辣椒属栽培种、野生种和种间杂交后代的
SRAP
分析
,
分子植物育种
Vol.9 No.29 (doi: 10.5376/mpb.cn.2011.09.0029)
以辣椒栽培种、野生种和种间杂交后代为试材,采用
SRAP
方法探讨其亲缘关系。用筛选的
20
SRAP
引物组合
41
份辣椒材料进行扩增,共产生
902
个位点,多态性位点比例
46.24
%,平均每对引物组合扩增位点
45.1
个。
41
份材料
两两不同种质间
Jaccard
相似系数在
0.709~0.982
之间,平均为
0.889
。通过
UPGMA
聚类分析,以相似系数
0.831
为阀值,
41
份试材归为
C. annuum
+
种间杂交后代、
C. chinense
C. frutescens
C. baccatum
4
类。种间杂交后代
(
C. annuum
×
C.
chinense
)
与母本的遗传相似系数随自交世代的增加而加大
(0.896~0.956)
,与父本的相似系数则维持在
0.767~0.824
之间。海
南野生
C. frutescens
种质与
C. annuum
及美洲
C. annuum
种质存在较大的扩增片段差异,并在用引物组合
Me18
-
Em21
Me9
-
Em17
扩增时,分别产生
385 bp
50 bp
的特异条带,可作为海南野生灌木辣椒特征性指纹图谱,为其保护利用提供分
子证据。
关键词
辣椒
;
野生灌木辣椒
; SRAP;
聚类分析
SRAP Analysis of Cultivated Species, Wild Species and Progeny from
Interspecific Hybridization in Pepper
Zhou Kunhua
1,2
, Fang Rong
1
, Chen Xuejun
1
1. Vegetable and Flower Institute, Jiangxi Academy of Agricultural Sciences, Nanchang, 330200, P.R. China
2. Key Laboratory of Oil Crops, Jiangxi Academy of Agricultural Sciences, Nanchang, 330200, P.R. China
Corresponding author, 19889766@163.com;
Authors
Abstract
Cultivated species, wild species and progeny from interspecific hybridization were used to assess the genetic relationships
in peper by SRAP markers. Twenty primers combinations that could be stably amplified were used to amplifly the DNA of 41 pepper
accessions. Of the 902 sites produced, 46.24% were polymorphic. Each primer combination amplified an average of 45.1 fragments.
Jaccard’S similarity between pairs of accessions ranged from 0.709 to 0.982 with a mean of 0.889. The results from UPGMA cluster
analysis suggested that 41 accessions could be classified into four groups at similarity coefficient 0.831, they are:
C. annuum
and
progeny from interspecific hybridization,
C. chinense
,
C. frutescens
and
C. baccatum
. The similarity coefficient between the progeny
from interspecific hybridization (
C. annuum
×
C. chinense
) and the female parent increased with the inbred generations (0.896~0.956),
while that between the progeny and the male parent kept among 0.767~0.824. Great diversity of amplification bands was observed
among wild
C. frutescens
accession from Hainan, China,
C. annuum
and
C. frutescens
accession from America. The 385 bp band and
the 50 bp band generated with Me18
-
Em21 primer combination and Me9
-
Em17 primer combination respectively in wild
C. frutescens
from Hainan in China, could be used as fingerprint for the protection and utilization.
Keywords
Pepper; Wild
C. frutescens
; SRAP; Cluster analysis
研究背景
辣椒
(
Capsicum
spp.)
是我国的主要果菜之一,
据考证,我国现有栽培辣椒是明朝末年开始从国外
引入,在分类上一般属于一年生辣椒
(
Capsicum
annuum
) (
李曙轩
, 1986)
C. annuum
也是世界上栽培
最广泛、类型最丰富的种
(Pickersgill, 1997)
,根据
果实生长习性可以进一步分为长椒、圆锥椒、灯笼
椒、簇生椒和樱桃椒等
5
个变种,但现代分子生物
学技术研究表明,
C. annuum
遗传基础狭窄,种内遗
传差异小
(Paran, et al., 1998; Rodriguez, et al., 1999;