The cytological instability of neoallopolyploids suggesting a potent way for DNA introgression: The case of synthetic hexaploid wheat x Aegilops peregrina

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	The cytological instability of neoallopolyploids suggesting a potent way for DNA introgression: The case of synthetic hexaploid wheat x Aegilops peregrina
	Yang, Youwei ; Zhang, Lianquan ; Yan, Zehong ; Zheng, Youliang ; Liu, Dengcai
	2011-04-04
发表期刊	AFRICAN JOURNAL OF AGRICULTURAL RESEARCH ; Yang, YW; Zhang, LQ; Yan, ZH; Zheng, YL; Liu, DC.The cytological instability of neoallopolyploids suggesting a potent way for DNA introgression: The case of synthetic hexaploid wheat x Aegilops peregrina,AFRICAN JOURNAL OF AGRICULTURAL RESEARCH,2011,6(7):1692-1697
摘要	SHW-L1 is a newly synthetic hexaploid wheat, which has a genomic combination analogous to that of natural common wheat. In the present study, intergeneric F(1) hybrids of SHW-L1 - Aegilops peregrina AS24 were produced without embryo rescue. Among the 31 F(1) hybrid plants observed, 20 had the expected chromosome number 2n = 35 and were euploids (genome ABDUS(I)). The remainder 11 plants were aneuploids with 33, 34, 36 and 37 chromosomes, indicating that the neoallohexaploid SHW-L1 was cytologically instable and produced aneuhaploid gametes with 19, 20, 22 and 23 chromosomes, respectively. The hybrid plant lacking chromosome 5B carrying Ph1 showed a very high level of homoeologous chromosome pairing. The absence of Ph gene provides a potent cytological mechanism for DNA introgression among homoeologous chromosomes between newly synthetic wheat and wild species.; SHW-L1 is a newly synthetic hexaploid wheat, which has a genomic combination analogous to that of natural common wheat. In the present study, intergeneric F-1 hybrids of SHW-L1 - Aegilops peregrina AS24 were produced without embryo rescue. Among the 31 F-1 hybrid plants observed, 20 had the expected chromosome number 2n = 35 and were euploids (genome ABDUS(I)). The remainder 11 plants were aneuploids with 33, 34, 36 and 37 chromosomes, indicating that the neoallohexaploid SHW-L1 was cytologically instable and produced aneuhaploid gametes with 19, 20, 22 and 23 chromosomes, respectively. The hybrid plant lacking chromosome 5B carrying Ph1 showed a very high level of homoeologous chromosome pairing. The absence of Ph gene provides a potent cytological mechanism for DNA introgression among homoeologous chromosomes between newly synthetic wheat and wild species.
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/20456
专题	中国科学院西北高原生物研究所
推荐引用方式 GB/T 7714	Yang, Youwei,Zhang, Lianquan,Yan, Zehong,et al. The cytological instability of neoallopolyploids suggesting a potent way for DNA introgression: The case of synthetic hexaploid wheat x Aegilops peregrina[J]. AFRICAN JOURNAL OF AGRICULTURAL RESEARCH, Yang, YW; Zhang, LQ; Yan, ZH; Zheng, YL; Liu, DC.The cytological instability of neoallopolyploids suggesting a potent way for DNA introgression: The case of synthetic hexaploid wheat x Aegilops peregrina,AFRICAN JOURNAL OF AGRICULTURAL RESEARCH,2011,6(7):1692-1697,2011.
APA	Yang, Youwei,Zhang, Lianquan,Yan, Zehong,Zheng, Youliang,&Liu, Dengcai.(2011).The cytological instability of neoallopolyploids suggesting a potent way for DNA introgression: The case of synthetic hexaploid wheat x Aegilops peregrina.AFRICAN JOURNAL OF AGRICULTURAL RESEARCH.
MLA	Yang, Youwei,et al."The cytological instability of neoallopolyploids suggesting a potent way for DNA introgression: The case of synthetic hexaploid wheat x Aegilops peregrina".AFRICAN JOURNAL OF AGRICULTURAL RESEARCH (2011).