砧用南瓜种质资源形态学性状与SSR标记分析

发布时间:2021-06-08

园 艺 学 报 2014,41(7):1379–1390 http: // www. ahs. ac. cn Acta Horticulturae Sinica E-mail: yuanyixuebao@ 砧用南瓜种质资源形态学性状与SSR标记分析

李 鹤1,郭世荣1,2,束 胜1,徐 扬1,孙 锦1,2,*

(1南京农业大学园艺学院,农业部南方蔬菜遗传改良重点开放实验室,江苏省现代设施农业技术与装备工程实验室, 南京 210095;2南京农业大学(宿迁)设施园艺研究院,江苏宿迁 223800)

摘 要:搜集了设施黄瓜嫁接栽培中常用的47份砧用南瓜种质资源,利用63个形态标记和40对南

瓜SSR标记,对其进行遗传多样性及亲缘关系鉴定。结果表明,砧用南瓜的8个质量性状(嫩瓜皮色、

瓜形、主蔓色、瓜面斑纹、叶面白斑、叶形、嫩瓜斑纹和嫩瓜斑纹色)和23个数量性状的多样性指数大

于1.00;SSR标记共检测到167个等位变异,平均每个SSR位点的等位基因数为4.18个,变幅2 ~ 8个,

平均多样性指数为0.62,变化范围0.16 ~ 1.18。非加权算术平均法(UPGMA)聚类分析表明,砧用南瓜

63个形态学性状将47份种质划分为4个类群,大部分品种集中于一个类群中;40对多态性SSR标记将

所有种质划分为3个类群,大部分品种的分子标记与形态学标记的聚类结果相似。已搜集的47份砧用南

瓜种质资源遗传多样性并不丰富,亲缘关系较近;SSR标记CMTm11具有极高的多态性,可用于砧用南

瓜种质分子标记辅助选择;嫩瓜皮色等8个质量性状和大部分数量性状都可以作为形态标记辅助种质资

源评价及新品种选育。

关键词:南瓜;砧木;形态学;SSR

中图分类号:S 642. 1 文献标志码:A 文章编号:0513-353X(2014)07-1379-12

Germplasm Resources Analysis of Rootstock-used Pumpkins by Phenotype

and SSR

LI He1,GUO Shi-rong1,2,SHU Sheng1,XU Yang1,and SUN Jin1,2,*

College of Horticulture (1 ,N anjing Agricultural University ,K ey Laboratory of Southern Vegetables Genetic Improvement of Ministry of Agriculture Nanjing China Facility Horticulture Institute Nanjing Agricultural University ,Suqian , , 210095, ;2 ,

Jiangsu 223800 ,C hina)

Abstract:Forty-seven accessions of rootstock-used pumpkin were collected in this research. Analyses

of genetic diversity and relationships were done with 63 phenotypes and 40 SSR markers. It was observed that H ’ > 1.00 with eight qualitative characters(tender gourd skin color,fruit shape,main vine color, skin speckle,foliage white spotting,leaf shape,tender gourd speckle and color)and 23 quantitative characters. One hundred and sixty-seven polymorphic bands were generated. An average of 4.18

ranged from polymorphic bands were detected from one pair SSR primers,and they ranged from 2 to 8. H ’

0.16 to 1.18,and its average was 0.62. Forty-seven germplasms were divided into four groups by 63

morphological traits,and most of the germplasms were clustered into one group. Three groups were

divided by 40 higher polymorphic SSR primers,similar to the result of our previous morphological study.

收稿日期:2014–02–26;修回日期:2014–06–13

基金项目:国家现代农业产业技术体系建设专项资金项目(CARS-25-C-03);江苏省农业三新工程项目(SXGC[2012]391)

* 通信作者 Author for correspondence(E-mail:jinsun@)

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