18个早熟禾品种SSR指纹图谱的构建  

Fingerprint establishment of 18 Poa pratensis cultivars with SSR markers

作　　者：赵闫闫[1] 喻凤[1] 李媛[1] 窦全文[1] 

机构地区：[1]中国科学院西北高原生物研究所,青海西宁810000

出　　处：《草原与草坪》2016年第1期31-34,42,共5页Grassland and Turf

基　　金：青海省科技厅科技促进新农村建设计划项目(2013-N-515)资助

摘　　要：利用从草地早熟禾（Poa pratensis）基因组中开发出来的3对多态性SSR引物,对18个早熟禾品种进行分子指纹图谱鉴别研究。结果表明：3对引物在18个品种中共检测出16个多态性片段,每对引物可以检测到4至6个数目不等的片段,平均为5.33个,片段大小介于152至227bp。利用单一引物可将18个品种区分为5-11种类型,平均为8.33个类型。利用这3对SSR多态性引物指纹图谱可以将18个品种完全区分开。研究构建的指纹图谱可作为对文中18个早熟禾品种进行区分的重要参考依据,同时筛选出的对核心引物也可以用来构建其他早熟禾品种的指纹图谱。The fingerprint of 18 Poa pratensis cultivars was established by using 3polymorphic simple sequences repeat（SSR）markers developed from genomic DNA of P.pratensis.Totally 16 polymorphic SSR fragments were detected in all tested cultivars,and 4to 6alleles were detected by each pair of SSR primer with an average of 5.33.The band size varied from 152 bp to 227 bp.18cultivars could be divided into 5to 11 groups by single polymorphism primer,with an average of 8.33.18 cultivars could be distinguished thoroughly by the fingerprinting maps constructed by the 3pairs of SSR primers.The constructed fingerprinting maps are important references to discriminate the 18 tested cultivars.Furthermore,the screened 3polymorphic SSR markers can be useful to establish fingerprint for other cultivars.

关 键 词：早熟禾 SSR标记 指纹图谱 品种鉴别 

分 类 号：Q789[生物学—分子生物学]