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Synthetic hexaploid wheat enhances variation and adaptive evolution of bread wheat in breeding processes

文献类型： 外文期刊

作者： Li, Jun 2 ; Wan, Hong-Shen 1 ; Yang, Wu-Yun 1 ;

作者机构： 1.Sichuan Acad Agr Sci, Crop Res Inst, Chengdu 610066, Peoples R China

2.Minist Agr, Key Lab Wheat Biol & Genet Improvement Southweste, Chengdu 610066, Peoples R China

关键词： adaptive evolution;Aegilops tauschii;introgression;synthetic hexaploid wheat;wheat breeding

期刊名称：JOURNAL OF SYSTEMATICS AND EVOLUTION （ 影响因子：4.098； 五年影响因子：4.735 ）

ISSN： 1674-4918

年卷期： 2014 年 52 卷 6 期

页码：

收录情况： SCI

摘要： Synthetic hexaploid wheat (SHW) that combines novel and elite genes from the tetraploid wheat Triticum turgidum L. and wild ancestor Aegilops tauschii Coss., has been used to genetically improve hexaploid common wheat. The abundant genetic diversity in SHW can effectively make breakthroughs in wheat genetic improvement through the inclusion of increased variation. In this paper, we reviewed the current advances in research and utilization of the primary SHW lines and SHW-derived wheat varieties that have enhanced evolution of modern wheat under conditions of natural and artificial selection in southwestern China. Using primary SHW lines, four high-yielding wheat varieties have been developed. In addition, using the SHW-derived varieties as breeding parents, 12 new wheat varieties were also developed. Results of genotype-phenotype and fingerprint analysis showed that the introgressed alleles from SHW lines have contributed a great number of elite characters to the new wheat varieties, and these elite characters include disease resistance, more spikes per plant, more grains per spike, larger grains, and higher grainyield potential. We found that the primary SHW lines and SHW-derived varieties have identifiable effects to enhance genetic variation and adaptive evolution of modern hexaploid wheat, which significantly increased the grain yields of hexaploid wheat in recent years. These findings have significant implications in the breeding of high-yielding wheat varieties resistant to biotic and abiotic stresses using SHW as genetic resources.

  • 相关文献

[1]Synthetic hexaploid wheat and its utilization for wheat genetic improvement in China. Li, Jun,Wei, Huiting,Hu, Xiaorong,Zou, Yuchun,Liu, Dengcai,Zhang, Lianquan,Zheng, Youliang,He, Zhouhu,He, Zhouhu,Liu, Dengcai. 2009

[2]Identification of SNPs and development of allelic specific PCR markers for high molecular weight glutenin subunit D(t)x1.5 from Aegilops tauschii through sequence characterization. Yang, WY,Zhang, WJ,Lu, BR. 2005

[3]Identification of QTLs for Yield-Related Traits in the Recombinant Inbred Line Population Derived from the Cross Between a Synthetic Hexaploid Wheat-Derived Variety Chuanmai 42 and a Chinese Elite Variety Chuannong 16. Li Jun,Wei Hui-ting,Li Chao-su,Yang Wu-yun,Chen Fang,Wu Yuan-qi. 2011

[4]Effect of high-molecular-weight glutenin allele, Glu-B1d, from synthetic hexaploid wheat on wheat quality parameters and dry, white Chinese noodle-making quality. Chen, Fang,Tang, Yonglu,Yang, Wuyun,Wu, Yuanqi,Li, Chaosu,Li, Jun,Zou, Yuchun,Mares, Daryl. 2010

[5]Inheritance in hexaploid wheat of genes for hairy auricles and hairy leaf sheath derived from Aegilops tauschii Coss.. Wu, BH,Hu, XR,Ye, Y,Zhang, Y. 1999

[6]Differentiation of the high molecular weight glutenin subunit D-t x2.1 of Aegilops tauschii indicated by partial sequences of its encoding gene and SSR markers. Yang, WY,Lu, BR. 2005

[7]Relationships of Aegilops tauschii revealed by DNA fingerprints: The evidence for agriculture exchange between China and the West. Wei, Huiting,Li, Jun,Yang, Wuyun,Peng, Zhengsong,Zhao, Zhijun. 2008

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