A breeding strategy targeting the secondary gene pool of bread wheat: introgression from a synthetic hexaploid wheat
文献类型: 外文期刊
作者: Hao, Ming 1 ; Zhang, Lianquan 1 ; Zhao, Laibin 1 ; Dai, Shoufen 1 ; Li, Aili 2 ; Yang, Wuyun 3 ; Xie, Die 1 ; Li, Qingche 1 ;
作者机构: 1.Sichuan Agr Univ, Triticeae Res Inst, 211 Huiming Rd, Chengdu 611130, Sichuan, Peoples R China
2.Chinese Acad Agr Sci, Inst Crop Sci, Beijing 100081, Peoples R China
3.Sichuan Acad Agr Sci, Crop Res Inst, Chengdu 610066, Sichuan, Peoples R China
4.Chinese Acad Sci, Northwest Inst Plateau Biol, Xining 810008, Qinghai, Peoples R China
5.Int Maize & Wheat Improvement Ctr, Texcoco 56237, Mexico
6.Rothamsted Res, Harpenden AL5 2JQ, Herts, England
期刊名称:THEORETICAL AND APPLIED GENETICS ( 影响因子:5.699; 五年影响因子:5.565 )
ISSN: 0040-5752
年卷期: 2019 年 132 卷 8 期
页码:
收录情况: SCI
摘要: Key messageIntrogressing one-eighth of synthetic hexaploid wheat genome through a double top-cross plus a two-phase selection is an effective strategy to develop high-yielding wheat varieties.AbstractThe continued expansion of the world population and the likely onset of climate change combine to form a major crop breeding challenge. Genetic advances in most crop species to date have largely relied on recombination and reassortment within a relatively narrow gene pool. Here, we demonstrate an efficient wheat breeding strategy for improving yield potentials by introgression of multiple genomic regions of de novo synthesized wheat. The method relies on an initial double top-cross (DTC), in which one parent is synthetic hexaploid wheat (SHW), followed by a two-phase selection procedure. A genotypic analysis of three varieties (Shumai 580, Shumai 969 and Shumai 830) released from this program showed that each harbors a unique set of genomic regions inherited from the SHW parent. The first two varieties were generated from very small populations, whereas the third used a more conventional scale of selection since one of bread wheat parents was a pre-breeding material. The three varieties had remarkably enhanced yield potential compared to those developed by conventional breeding. A widely accepted consensus among crop breeders holds that introducing unadapted germplasm, such as landraces, as parents into a breeding program is a risky proposition, since the size of the breeding population required to overcome linkage drag becomes too daunting. However, the success of the proposed DTC strategy has demonstrated that novel variation harbored by SHWs can be accessed in a straightforward, effective manner. The strategy is in principle generalizable to any allopolyploid crop species where the identity of the progenitor species is known.
- 相关文献
作者其他论文 更多>>
-
Haplotype Analysis Sheds Light on the Genetic Evolution of the Powdery Mildew Resistance Locus Pm60 in Triticum Species
作者:Huang, Xuhui;Jin, Xueli;Ren, Xiaojie;Wu, Wenxuan;Ji, Wenjun;Jiang, Bo;Hao, Ming;Ning, Shunzong;Yuan, Zhongwei;Wu, Bihua;Liu, Dengcai;Huang, Lin;Ren, Xiaojie;Wei, Zhen-Zhen;Feng, Lihua;Zhang, Lianquan;Wei, Zhen-Zhen
关键词:wheat powdery mildew; Pm60; allelic variants; domesticated wheat
-
The KL system in wheat permits homoeologous crossing over between closely related chromosomes
作者:Fan, Chaolan;Li, Yazhou;Liu, Dengcai;Hao, Ming;Fan, Chaolan;Lukaszewski, Adam J.;Fan, Chaolan;Sun, Jiaojiao;Chen, Hong;Li, Liqiong;Zhang, Lanyue;Chen, Xue;Ning, Shunzong;Yuan, Zhongwei;Jiang, Bo;Chen, Xuejiao;Liu, Dengcai;Luo, Jiangtao
关键词:ph-like gene; phKL; Homoeologous recombination; Homoeology
-
Genetic Improvement and Application Practices of Synthetic Hexaploid Wheat
作者:Wan, Hongshen;Li, Jun;Wang, Qin;Liu, Zehou;Tang, Yonglu;Yang, Wuyun;Wan, Hongshen;Yang, Fan;Li, Jun;Wang, Qin;Liu, Zehou;Tang, Yonglu;Yang, Wuyun;Wan, Hongshen;Li, Jun;Wang, Qin;Liu, Zehou;Tang, Yonglu;Yang, Wuyun;Yang, Fan
关键词:synthetic hexaploid wheat; genetic improvement; application practices
-
Identification of the Solid Stem Suppressor Gene Su-TdDof in Synthetic Hexaploid Wheat Syn-SAU-117
作者:Li, Hui;Huang, Lin;Liu, Dengcai;Zhang, Lianquan;Li, Hui;Liu, Xin;Zhang, Junqing;Chen, Longyu;Zhang, Minghu;Miao, Yongping;Ma, Pan;Hao, Ming;Jiang, Bo;Ning, Shunzong;Huang, Lin;Yuan, Zhongwei;Chen, Xuejiao;Chen, Xue;Liu, Dengcai;Zhang, Lianquan;Wan, Hongshen;Wan, Hongshen
关键词:semisolid; gene mapping; Aegilops tauschii; synthetic hexaploid wheat; lodging resistance
-
New insights on the evolution of nucleolar dominance in newly resynthesized hexaploid wheat Triticum zhukovskyi
作者:Huang, Yuhong;Liu, Yang;Guo, Xianrui;Fan, Chaolan;Yi, Congyang;Shi, Qinghua;Liu, Chang;Yuan, Jing;Han, Fangpu;Huang, Yuhong;Yi, Congyang;Han, Fangpu;Su, Handong;Liu, Dengcai;Yang, Wuyun
关键词:nucleolus organizer region; ribosomal DNA genes; nucleolar dominance; epigenetics; Triticum zhukovskyi
-
Development and cytological characterization of wheat-Thinopyrum intermedium translocation lines with novel stripe rust resistance gene
作者:Guo, Xianrui;Hu, Xiaojun;Guo, Xianrui;Huang, Yuhong;Wang, Jing;Fu, Shulan;Wang, Chunhui;Wang, Mian;Zhou, Chen;Han, Fangpu;Wang, Tao;Yang, Wuyun
关键词:wheat; Thinopyrum intermedium; translocation line; stripe rust; gene mapping
-
Development and Characterization of Near-Isogenic Lines Derived from Synthetic Wheat Revealing the 2 kb Insertion in the PPD-D1 Gene Responsible for Heading Delay and Grain Number Improvement
作者:Ning, Shunzong;Li, Shengke;Zhang, Lianquan;Liu, Dengcai;Ning, Shunzong;Li, Shengke;Xu, Kai;Liu, Dongmei;Ma, Li;Ma, Chunfang;Hao, Ming;Zhang, Lianquan;Huang, Lin;Chen, Xuejiao;Jiang, Bo;Yuan, Zhongwei;Liu, Dengcai;Chen, Wenjie;Zhang, Bo;Jiang, Yun
关键词:synthetic wheat; photoperiod-1; number of days to heading; grain number per spike; spike length; spikelet number per spike