Production of hexaploid triticale by a synthetic hexaploid wheat-rye hybrid method

	Production of hexaploid triticale by a synthetic hexaploid wheat-rye hybrid method
	Hao, Ming ; Luo, Jiangtao ; Zhang, Lianquan ; Yuan, Zhongwei ; Yang, Youwei ; Wu, Meng ; Chen, Wenjie ; Zheng, Youliang ; Zhang, Huaigang ; Liu, Dengcai ; Liu, DC (reprint author), Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Adaptat & Evolut Plateau Biota, Xining 810001, Peoples R China.
刊名	EUPHYTICA ; Hao, M; Luo, JT; Zhang, LQ; Yuan, ZW; Yang, YW; Wu, M; Chen, WJ; Zheng, YL; Zhang, HG; Liu, DC.Production of hexaploid triticale by a synthetic hexaploid wheat-rye hybrid method,EUPHYTICA,2013,193(3):347-357
	2013-10-01
英文摘要	Hexaploid triticale, including its primary and secondary forms, is an important forage crop and a promising energy plant. Primary forms are usually developed by crossing Triticum turgidum L. with rye, with secondary forms obtained by crossing primary hexaploid triticale and/or hexaploid wheat with octoploid triticale. In this study, we developed an effective method for production of hexaploid triticale via hybridization of synthetic hexaploid wheat (SHW) with rye. The three employed SHW lines were derived from hybridization of T. turgidum with Aegilops tauschii Cosson, and inherited meiotic restitution genes, which can promote the formation of functional gametes in haploid status, from their T. turgidum parents. Although the resulting tetraploid F-1 hybrids with rye (genome ABDR) produced amphiploids (octoploid triticale) and partial amphiploids, the final hybrid products obtained through fertility selection over several generations were hexaploids. These hexaploids were the result of preferential elimination of D-genome chromosomes. In addition to complete hexaploid triticale with 28 intact A/B and 14 intact R chromosomes, we obtained hexaploid triticales with other chromosome constitutions, including monosomic, substitution, and translocation lines. Chromosomes 2D and 5D from the wild species A. tauschii were incorporated into the hexaploid triticales. Out of eight analyzed stable lines derived from three different SHW-L1/rye F-1 plants, we observed four lines with small-fragment translocations between wheat and rye chromosomes. Rapid production of hexaploid triticales using this method involves two factors: (1) hybridization between hexaploid wheat with a meiotic restitution gene(s) and rye and (2) selection for good fertility during F-3 and subsequent generations.; Hexaploid triticale, including its primary and secondary forms, is an important forage crop and a promising energy plant. Primary forms are usually developed by crossing Triticum turgidum L. with rye, with secondary forms obtained by crossing primary hexaploid triticale and/or hexaploid wheat with octoploid triticale. In this study, we developed an effective method for production of hexaploid triticale via hybridization of synthetic hexaploid wheat (SHW) with rye. The three employed SHW lines were derived from hybridization of T. turgidum with Aegilops tauschii Cosson, and inherited meiotic restitution genes, which can promote the formation of functional gametes in haploid status, from their T. turgidum parents. Although the resulting tetraploid F-1 hybrids with rye (genome ABDR) produced amphiploids (octoploid triticale) and partial amphiploids, the final hybrid products obtained through fertility selection over several generations were hexaploids. These hexaploids were the result of preferential elimination of D-genome chromosomes. In addition to complete hexaploid triticale with 28 intact A/B and 14 intact R chromosomes, we obtained hexaploid triticales with other chromosome constitutions, including monosomic, substitution, and translocation lines. Chromosomes 2D and 5D from the wild species A. tauschii were incorporated into the hexaploid triticales. Out of eight analyzed stable lines derived from three different SHW-L1/rye F-1 plants, we observed four lines with small-fragment translocations between wheat and rye chromosomes. Rapid production of hexaploid triticales using this method involves two factors: (1) hybridization between hexaploid wheat with a meiotic restitution gene(s) and rye and (2) selection for good fertility during F-3 and subsequent generations.
内容类型	期刊论文
源URL	[http://ir.nwipb.ac.cn/handle/363003/3921]
专题	西北高原生物研究所_中国科学院西北高原生物研究所
推荐引用方式 GB/T 7714	Hao, Ming,Luo, Jiangtao,Zhang, Lianquan,et al. Production of hexaploid triticale by a synthetic hexaploid wheat-rye hybrid method[J]. EUPHYTICA, Hao, M; Luo, JT; Zhang, LQ; Yuan, ZW; Yang, YW; Wu, M; Chen, WJ; Zheng, YL; Zhang, HG; Liu, DC.Production of hexaploid triticale by a synthetic hexaploid wheat-rye hybrid method,EUPHYTICA,2013,193(3):347-357,2013.
APA	Hao, Ming.,Luo, Jiangtao.,Zhang, Lianquan.,Yuan, Zhongwei.,Yang, Youwei.,...&Liu, DC .(2013).Production of hexaploid triticale by a synthetic hexaploid wheat-rye hybrid method.EUPHYTICA.
MLA	Hao, Ming,et al."Production of hexaploid triticale by a synthetic hexaploid wheat-rye hybrid method".EUPHYTICA (2013).