Frequent occurrence of unreduced gametes in Triticum turgidum-Aegilops tauschii hybrids

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	Frequent occurrence of unreduced gametes in Triticum turgidum-Aegilops tauschii hybrids
	Zhang, Lian-Quan 3,4; Liu, Deng-Cai 1,3,4; Zheng, You-Liang 3,4; Yan, Ze-Hong 3,4; Dai, Shou-Fen 3,4; Li, Yun-Fang 3,4; Jiang, Qi 3,4; Ye, Ya-Qing 3,4; Yen, Yang 2
	2010-03-01
发表期刊	EUPHYTICA
ISSN	0014-2336
卷号	172 期号:2 页码:285-294
文章类型	Article
摘要	Spontaneous chromosome doubling via union of unreduced (2n) gametes has been thought to be the way that common wheat (Triticum aestivum L.) was originated from the hybridization of T. turgidum L. with Ae. tauschii Cosson. Previous works have observed unreduced gametes in F(1) hybrids of Ae. tauschii with six of the eight T. turgidum subspecies. It is not clear, however, whether the formation of these unreduced gametes is a norm in the F(1) hybrids. In the present study, we tried to answer this question by assessing the occurrence frequency of unreduced gametes in 115 T. turgidum-Ae. tauschii hybrid combinations, involving 76 genotypes of seven T. turgdium subspecies and 24 Ae. tauschii accessions. Our data show that these hybrid combinations differed significantly (P a parts per thousand currency sign 0.01, F = 11.40) in selfed seedset, an indicator for production of unreduced gametes. This study clearly showed that meiotic restitution genes are widely distributed within T. turgidum. However, significant differences were found between as well as within T. turgidum subspecies and in the interaction of the T. turgidum genotypes with those of Ae. taushii. The possible application of the meiotic restitution genes from T. turgidum in production of double haploids is also discussed.; Spontaneous chromosome doubling via union of unreduced (2n) gametes has been thought to be the way that common wheat (Triticum aestivum L.) was originated from the hybridization of T. turgidum L. with Ae. tauschii Cosson. Previous works have observed unreduced gametes in F(1) hybrids of Ae. tauschii with six of the eight T. turgidum subspecies. It is not clear, however, whether the formation of these unreduced gametes is a norm in the F(1) hybrids. In the present study, we tried to answer this question by assessing the occurrence frequency of unreduced gametes in 115 T. turgidum-Ae. tauschii hybrid combinations, involving 76 genotypes of seven T. turgdium subspecies and 24 Ae. tauschii accessions. Our data show that these hybrid combinations differed significantly (P a parts per thousand currency sign 0.01, F = 11.40) in selfed seedset, an indicator for production of unreduced gametes. This study clearly showed that meiotic restitution genes are widely distributed within T. turgidum. However, significant differences were found between as well as within T. turgidum subspecies and in the interaction of the T. turgidum genotypes with those of Ae. taushii. The possible application of the meiotic restitution genes from T. turgidum in production of double haploids is also discussed.
关键词	Aegilops Tauschii Amphidiploid Fertility Triticum Turgidum Unreduced Gametes
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
关键词[WOS]	SEXUAL POLYPLOIDIZATION ; FLOWERING PLANTS ; HEXAPLOID WHEAT ; D-GENOME ; DURUM ; RESTITUTION ; EVOLUTION ; ORIGINS ; GENES ; LINES
收录类别	SCI
语种	英语
WOS研究方向	Agriculture ; Plant Sciences
WOS类目	Agronomy ; Plant Sciences ; Horticulture
WOS记录号	WOS:000274685800013
引用统计	被引频次：53[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/1738
专题	中国科学院西北高原生物研究所
作者单位	1.Chinese Acad Sci, NW Plateau Inst Biol, Xining 810008, Qinghai, Peoples R China 2.S Dakota State Univ, Dept Biol & Microbiol, Brookings, SD 57007 USA 3.Sichuan Agr Univ, Minist Educ, Key Lab Crop Genet Resources & Improvement, Yaan 625014, Sichuan, Peoples R China 4.Sichuan Agr Univ, Triticeae Res Inst, Chengdu 611130, Sichuan, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Lian-Quan,Liu, Deng-Cai,Zheng, You-Liang,et al. Frequent occurrence of unreduced gametes in Triticum turgidum-Aegilops tauschii hybrids[J]. EUPHYTICA,2010,172(2):285-294.
APA	Zhang, Lian-Quan.,Liu, Deng-Cai.,Zheng, You-Liang.,Yan, Ze-Hong.,Dai, Shou-Fen.,...&Yen, Yang.(2010).Frequent occurrence of unreduced gametes in Triticum turgidum-Aegilops tauschii hybrids.EUPHYTICA,172(2),285-294.
MLA	Zhang, Lian-Quan,et al."Frequent occurrence of unreduced gametes in Triticum turgidum-Aegilops tauschii hybrids".EUPHYTICA 172.2(2010):285-294.