不同生态类群水稻MAGIC群体构建  

Construction of Rice MAGIC Population of Different Ecological Groups

作　　者：桂毅杰 陈建民[1] 杨绍华[1] 陈在杰[1] 王锋[1] GUI Yi-jie;CHEN Jian-min;YANG Shao-hua;CHEN Zai-jie;WANG Feng(Fujian Key Laboratory of Agricultural Genetic Engineering/Institute of Biotechnology,Fujian Academy of Agricultural Sciences,Fuzhou,Fujian 350003,China)

机构地区：[1]福建省农业遗传工程重点实验室/福建省农业科学院生物技术研究所,福建福州350003

出　　处：《福建农业科技》2021年第4期1-8,共8页Fujian Agricultural Science and Technology

基　　金：福建省科技计划项目——省属公益类科研院所基本科研专项(2017R1019-4);福建省农业科学院英才计划(YC2016-10);福建省农业科学院博士基金项目(2015BS-3)。

摘　　要：优异种质的创制是育种工作成败的关键。为扩大水稻亲本遗传多样性,提高重组频率,通过利用育种骨干亲本来构建水稻MAGIC群体。选择了3种典型的水稻生态类群(分别为华南地区早生快发类群Z;长江流域粗秆大穗类群D和太湖流域粳稻类群J)共48份育种骨干亲本,开展各个类群的MAGIC群体构建。结果表明:亲本在特定的环境下的产量相关性状存在显著差异,遗传多态性丰富。采用漏斗式杂交配组的方法开展亲本间和杂交种的半双列杂交,获得了138份两亲本杂交F 1组合和96份4亲本杂交F 1组合,为接下来的8亲本杂交配组奠定了材料基础,目标是构建3个不同生态类群的水稻MAGIC群体,以期聚合骨干亲本的优势基因来创制水稻优异种质。The creation of the excellent germplasm is the key to the success of breeding.In order to expand the genetic diversity of rice and improve the frequency of recombination,the rice MAGIC population was constructed by using the elite breeding lines.A total of 48 breeding backbone parents from 3 typical rice ecological groups were selected to carry out the MAGIC population construction of each group.The results showed that there were significant differences in the yield-related traits among the parents under the specific environment,and the genetic polymorphism was abundant.By using the method of funnel-shaped hybridization,the half diallel crosses between the parents and hybrids was carried out,and 138 two-parent F 1 hybridized combinations and 96 four-parent F 1 hybridized combinations were obtained,which laid the material foundation for the next eight-parent hybridized combinations.The goal was to construct the rice MAGIC population of 3 different ecological groups,in order to aggregate the superior alleles of the backbone parents to create the excellent rice germplasm.

关 键 词：水稻 MAGIC群体 生态群 

分 类 号：S511[农业科学—作物学]