Dominant early heading without yield drag in a sister-line BC breeding progeny DEH_229 is controlled by multiple genetic factors with maineffect loci

作     者：Muhiuddin Faruquee Qiang Zhang Lubiao Zhang Linyun Xu Wensheng Wang Jiansan Chen Jianlong Xu Zhikang Li Binying Fu Tianqing Zheng Muhiuddin Faruquee;Qiang Zhang;Lubiao Zhang;Linyun Xu;Wensheng Wang;Jiansan Chen;Jianlong Xu;Zhikang Li;Binying Fu;Tianqing Zheng

作者机构：Institute of Crop Sciences/National Key Facility for Crop Gene Resources and Genetic ImprovementChinese Academy of Agricultural SciencesBeijing 100081China Shenzhen Institute of Breeding&InnovationChinese Academy of Agricultural SciencesShenzhen 518120GuangdongChina Institute of Rice ResearchGuangdong Academy of Agricultural SciencesGuangzhou 510640GuangdongChina 

出 版 物：《The Crop Journal》 (作物学报（英文版）)

年 卷 期：2021年第9卷第2期

页      面：400-411页

核心收录：

学科分类：0710[理学-生物学] 09[农学] 0901[农学-作物学] 0902[农学-园艺学] 

基　　金：We appreciate supports from the National Key Research and Development Program of China(2016YFD0101801) the National Natural Science Foundation of China(31871715) the Agricultural Science and Technology Innovation Program of Chinese Academy of Agricultural Sciences(ICS2020YJ07BX,1610092015003-10,and Y2020PT24) the Open Program from the Guangxi Key Laboratory of Rice Genetics and Breeding(2018-05-Z06-KF01) the“Green Super Rice”Project from Bill&Melinda Gates’Foundation(OPP1130530) 

主　　题：Dominant early heading Yield drag Sister-line BC breeding Multiple genetic factors Cryptic genetic variation(CGV) Rice(Oryza sativa L.) 

摘      要：Dominant early heading(DEH)in rice(Oryza sativa L.)is of interest in both breeding and *** genetic mechanisms underlying DEH have remained largely *** have developed a near-isogenic DEH line without yield drag named DEH_229 by sister-line backcross(BC)breeding with MH63,a restorer,as the genetic *** conducted a pilot genetic investigation under both short-day(SD)and long-day(LD)*** DEH line harbored only 1.06%variation in the genome sequence relative to *** variants were distributed throughout the *** QTL mapping by sequencing(QTL-seq)on an F_(2) population derived from a cross of MH63×DEH_229,57 loci were detected under the SD *** mapping employing a genome-wide association study with accessions from the 3000 rice genome sequencing project(3K-RG),reduced the number of QTL by 43.9%.Using Rice Functional Genomics&Breeding(RFGB)database,the number of SNP cluster regions within the QTL regions reduced by 27.3%.Further comparison of the genome variation between DEH_229 and MH63 in addition to gene annotation information revealed a new DEH allele of DTH3 with multiple variable sites as a possible major factor underlying the early-heading phenotype of DEH_*** InDel marker,ZMEH_1,was designed based on the variation between DEH_229 and MH63 within this *** accounted for 86.0%of heading date variation under both SD and LD conditions in 109 randomly chosen progeny derived from extreme lines of the MH63×DEH_229 *** study reveals the genetic complexity of DEH in the near-isogenic line and may provide useful material and marker information for plant molecular breeding.