Synaptic behaviour of hexaploid wheat haploids with different effectiveness of the diploidizing mechanism

被引：18

作者：

Martinez, M

Cuadrado, C

Laurie, DA

Romero, C ^{[1
]}

机构：

[1] Univ Complutense Madrid, Fac Ciencias Biol, Dept Genet, E-28040 Madrid, Spain

[2] John Innes Ctr Plant Sci Res, Norwich NR4 7UH, Norfolk, England

来源：

CYTOGENETIC AND GENOME RESEARCH | 2005年 / 109卷 / 1-3期

关键词：

D O I：

10.1159/000082402

中图分类号：

Q2 [细胞生物学];

学科分类号：

071009 ; 090102 ;

摘要：

Haploids of three cultivars of Triticum aestivum ( Thatcher, Chris, and Chinese Spring) were obtained from crosses with Zea mays. The level of chromosome pairing at metaphase I and the synaptic behaviour at prophase I was studied. There were differences in the meiotic behaviour of the haploids from different cultivars. Thatcher and Chris haploids had significantly higher levels of pairing at metaphase I than Chinese Spring haploids. This metaphase I pairing was correlated with higher levels of synapsis achieved in the Thatcher and Chris prophase I nuclei than in the Chinese Spring nuclei. Variation in the effectiveness of the diploidizing mechanism among cultivars of wheat is proposed to have a genetic origin and the role of the Ph1 locus in the different haploids is discussed. Copyright (C) 2005 S. Karger AG, Basel.

引用

页码：210 / 214

页数：5

共 31 条

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