基于EST-SSR标记的平欧杂种榛品种鉴定  

Cultivar Identification of Ping'ou Hybrid Hazelnut Based on EST-SSR Markers

作　　者：马庆华[1] 李京璟 赵天田[1] 梁丽松[1] 王贵禧[1] MA Qing-hua LI Jing-jing ZHAO Tian-tian LIANG Li-song WANG Gui-xi(Research Institute of Forestry, Chinese Academy of Forestry/Key Laboratory of Forestry Silviculture of State Forestry Administration/Key Laboratory of Tree Genetics and Breeding, Beijing 100091)

机构地区：[1]中国林业科学研究院林业研究所/国家林业局林木培育实验室/林木遗传育种国家重点实验室,北京100091

出　　处：《植物遗传资源学报》2017年第5期952-959,共8页Journal of Plant Genetic Resources

基　　金：中国林科院2017年基本科研业务费重点项目子任务"榛子提质增效关键技术研究"(CAFYBB2017ZA004-9)

摘　　要：为建立准确、高效的平欧杂种榛品种鉴定方法,本研究收集目前国内普遍引种的平欧杂种榛品种(品系)43个,选用课题组已开发的12对EST-SSR引物进行品种鉴定方法研究。结果表明:不同引物在供试样品中的PIC值为0.3800~0.7839,平均为0.5113,各引物组合经毛细管电泳均显示出了良好的扩增效果;平欧杂种榛品种(品系)间的亲缘关系较为复杂,其中薄壳红和平欧62、平欧3和平欧7、平欧30和平欧48的遗传距离最近;引物CAF-2、CAF-3、CAF-12和CAF-13组合使用,可完全区分43个平欧杂种榛品种(品系),其中引物CAF-2与CAF-13组合使用,可鉴定16个主栽品种(品系)。上述研究结果为平欧杂种榛的品种鉴定提供了便捷、有效的方法,也可为其他榛属植物研究提供参考。Hazelnut（ Corylus L.） is one of the most important nut crops and woody oil plants in the world. It is commonly thought there are eight hazelnut species and two varieties distributed in China. Ping＇ ou hybrid hazelnut（ C. heterophylla Fisch. × C. avellana L.）,which is hybrid of Ping hazelnut（ C. heterophylla Fisch.） from northeast China and the seedlings of European hazelnut（ C. avellana L.） introduced from Italy in 1980＇s,shows characters of big nut,high yield,high kernel percentage and well-adapted in most area in China. Dozens of cultivars and varieties of Ping＇ou hybrid hazelnuts are selected based on the comparative trials and regional trials,among which sixteen are the main cultivars. Until now,Ping＇ ou hybrid hazelnuts have been widely cultivated in twenty provinces of China since 2000 with the cultivated area more than 60000 hectare. As for breeding and resources assessment,the genetic background of those cultivars and varieties is very complicated due to the mixed pollen of the male parent. As for the production,the mix of the cultivars/varieties is one of the primary problems in China,which leads to a lot of economic losses to the orchards. While,the identification of the hazelnut cultivars now is still depending on the botanical characters,that is low efficiency and inaccurate. Thus,it is important to establish an efficient cultivar identification method for Ping＇ ou hybrid hazelnuts. Microsatellites or simple sequence repeats（ SSRs） are tandem repeats of short DNA sequences extensively distributed throughout the whole genome in both coding and non-coding regions and are considered ideal molecular markers. Compared with genomic SSRs,EST-SSRs have several special advantages due to either a relatively higher transferability or a potential gene function,which have been evaluated in many studies. The objective of this study is to establish an accurate and high efficiency method for Ping＇ou hybrid hazelnutcultivar identification. 43 cultivars/varieties of Ping＇ ou hybrid ha

关 键 词：平欧杂种榛 EST-SSR标记 亲缘关系 品种鉴定 

分 类 号：S664.4[农业科学—果树学]