中国北方薯区甘薯育种核心亲本初步构建与利用  

Construction and Primary Utilization of Core Parents for Sweetpoato Breeding in Northern China

作　　者：李强[1] 马代夫[1] 刘庆昌[2] 李鹏[1] 王欣[1] 张允刚[1] 后猛[1] 唐维[1] 李秀英[1] 

机构地区：[1]中国农业科学院甘薯研究所,江苏徐州甘薯研究中心,江苏徐州221121 [2]中国农业大学植物遗传育种系,农业部作物基因组学与遗传改良重点开放实验室,北京100193

出　　处：《西北农业学报》2010年第12期48-52,共5页Acta Agriculturae Boreali-occidentalis Sinica

基　　金：江苏省“六大人才高峰”(2008201);公益性行业(农业)科研专项经费(nyhyzx3-56);Harvest Plus基金项目(HP8238);国家农业产业技术体系(nycytx-16);国家科技支撑计划(2009BADA7B03)

摘　　要：用ISSR和AFLP分子标记手段,分析中国北方薯区主要育种亲本的遗传差异,初步构建中国北方薯区甘薯育种核心亲本。根据育种亲本之间的遗传相似系数,结合综合农艺性状,分别构建以高淀粉、食用和综合性状为育种目标的核心亲本群,所构建的核心亲本群分别保持了供试品种多态性条带93.61%、94.12%和93.73%的遗传多样性。利用核心亲本群配制授粉组合,选择出后代入选率高的重点组合。Sixty-two parents of sweetpotato frequently used in northern China were analyzed using inter-simple sequence repeat（ISSR） and amplified fragment length polymorphism（AFLP） markers to understand their genetic differences for core parents construction in northern China preliminary.The core parent groups for high starch content,edible usage and multiple uses were constructed based on the genetic similarity coefficient among the tested cultivars and their integrated agricultural characteristics.The polymorphic bands of 93.61%,94.12%,and 93.73% were retained in the 3 core parent groups respectively.The controlled crossings were carried out among the core parents in the same group,and the fine combinations were selected with higher selecting rates.

关 键 词：甘薯 遗传差异 核心亲本 育种利用 

分 类 号：S531[农业科学—作物学]