Broadening the genetic base of Brassica juncea by introducing genomic components from *** and *** via digenomic allohexaploid bridging

作     者：Jiaqin Mei Jin Liu Fang Yue Yangui Chen Jiayi Ming Zhiyong Xiong Fengqun Yu Jiana Li Wei Qian Jiaqin Mei;Jin Liu;Fang Yue;Yangui Chen;Jiayi Ming;Zhiyong Xiong;Fengqun Yu;Jiana Li;Wei Qian

作者机构：College of Agronomy and BiotechnologySouthwest UniversityChongqing 400716China Academy of Agricultural SciencesSouthwest UniversityChongqing 400716China State Cultivation Base of Crop Stress Biology for Southern Mountainous Land of Southwest UniversityChongqing 400715China Key Laboratory of Herbage and Endemic Crop BiotechnologySchool of Life SciencesInner Mongolia UniversityHohhot 010070Inner Mongoli1China Agriculture and Agri-Food Canad1Saskatoon Research and Development Center107 Science PlaceSaskatoonSK S7N 0X2Canada 

出 版 物：《The Crop Journal》 (作物学报（英文版）)

年 卷 期：2022年第10卷第3期

页      面：672-679页

核心收录：

学科分类：09[农学] 0902[农学-园艺学] 090202[农学-蔬菜学] 

基　　金：financially the National Key Research and Development Program of China(2018YFE0108000) the Natural Science Foundation of Chongqing(cstc2019jcyj-zdxm X0012) the Fundamental Research Funds for the Central Universities(XDJK2018B022,XDJK2018AA004) 

主　　题：Brassica juncea Diploid progenitor species Exotic introgression Genetic diversity Digenomic hexaploid 

摘      要：A narrow genetic base has hindered improvement of Brassica juncea(A^(j)A^(j)B^(j)B^(j)).In this study,large-scale genomic components were introduced from diploid ancestor species into modern *** using a digenomic hexaploid *** hexaploids A^(j)A^(j)A^(r)A^(r)B^(j)B^(j) and A^(j)A^(j)B^(j)B^(j)B^(n)B^(n) were first developed from ***×***(A^(r)A^(r))and ***×***(B^(n)B^(n)),and then crossed with dozens of *** and ***,*** types of hexaploid showed high pollen fertility and moderate seed set throughout the S_(1) to S_(3) generations,and could be crossed with diploid progenitor species under field conditions,in particular for the combination of A^(j)A^(j)B^(j)B^(j)B^(n)B^(n)×*** A^(j)A^(r)B^(n)B^(j)-type and 31 A^(j)A^(r)B^(n)B^(j)-type *** resources were generated,of which the A^(j)A^(r)B^(n)B^(j) type showed higher *** these new-type *** resources,97 individual plants were genotyped with 42 simple sequence repeat markers,together with 16 current *** accessions and 30 hexaploid *** on 180 polymorphic loci,the new-type *** resources and current *** were separated clearly into distinct groups,with large genetic distance between the new-type *** resources and current *** study provides a novel approach to introducing large-scale genomic components from diploid ancestor species into ***.