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首页> 外文会议>3rd China-Japan-Korea Workshop on Sweetpotato(第三届中日韩甘薯学术研讨会)论文集 >Genetic difference of sweetpotato cultivars in East Asia as revealed by AFLP marker
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Genetic difference of sweetpotato cultivars in East Asia as revealed by AFLP marker

机译：AFLP标记揭示东亚甘薯品种的遗传差异

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摘要

As an important material of industry,new energy resource,food and forage crop,sweetpotato,(Ipomoee batatas(L.)Lam.),is desired to increase production,but it is often limited by a lacking knowledge in conventional hybridization.Therefore,it is necessary to assess genetic diversity of sweetpotato.In this study,43 sweetpotato cultivars of East Asia were assessed by using amplified fragment length polymorphism(AFLP)marker to understand their genetic difference for sweetpotato improvement and germplasm exchange.Ten AFLP primer pairs generated 307 bands,in which 71.7% bands were polymorphic with an average of 22.0 polymorphic bands per primer,indicating that AFLP marker was one of higher efficient methods to analyze the genetic diversity of sweetpotato.Wide genetic distances were found among the tested cultivars,ranged from 0.0938 to 0.3359 with an average of 0.2302.The UPGMA cluster analysis classified these cultivars into 5 groups.Cultivars from different countries Or regions of East Asia had obvious differences in terms of genetic distance.And the genetic distances between cultivars of different countries or region were larger than those within cultivars of same countries or region.The cultivars from Korea were far from other regions of East Asia,and the cultivars from Chinese mainland had the lowest mean genetic distance.These results suggest that crosses between different regional cultivars should be emphasized in sweetpotato breeding in East Asia,and germplasm exchange with Korea should be strengthened in the future in China.
机译：作为一种重要的工业原料，新能源，粮食和饲料作物，甜薯（Ipomoee batatas（L.）Lam。），希望增加产量，但由于缺乏常规杂交知识而常常受到限制。因此，本研究利用扩增片段长度多态性（AFLP）标记对东亚地区43个甘薯品种进行了评估，以了解其遗传差异对甘薯改良和种质交换的影响。十对AFLP引物共产生307对条带，其中71.7％的条带是多态性的，每个引物平均有22.0条多态性条带，表明AFLP标记是分析甘薯遗传多样性的更有效方法之一。被测品种之间的遗传距离较广，范围为0.0938到0.3359，平均为0.2302.UPGMA聚类分析将这些品种分为5类。来自东亚不同国家或地区的品种a在遗传距离上有明显差异。不同国家或地区的品种之间的遗传距离要比同一国家或地区的品种之间的遗传距离大。中国大陆的平均遗传距离最低。这些结果表明，在东亚甜薯育种中应强调不同区域品种之间的杂交，并在中国将来应加强与韩国的种质交流。

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