羊茅二倍体种间杂种的细胞遗传学研究

W. Morgan, H. Thomas, M. Evans, M. Borrill
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引用次数: 10

摘要

描述了羊茅属二倍体种间杂交的染色体配对。不同分类区段的物种染色体互补体在染色体大小和DNA含量上存在差异。在蒙大纳科种间杂交中,亲本种DNA含量的差异与F1杂交的染色体配对之间存在一定的关系。亲本种间DNA含量差异越大,F1杂交种的染色体配对失败越明显。在其他杂交组合中,除基因组大小差异外的其他因素也显示对染色体配对有影响。关键词:染色体配对,DNA含量,羊茅,杂种(种间)。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Cytogenetic studies of interspecific hybrids between diploid species of Festuca
Chromosome pairing in hybrids between diploid species of Festuca is described. The chromosome complements of the species from different taxonomic sections vary in chromosome size and DNA content. In interspecific hybrids involving species of the section Montanae there was a relationship between the difference in DNA content of the parental species and chromosome pairing in the F1 hybrids. The larger the difference between the DNA content of the parental species, the more pronounced the failure of chromosome pairing in the F1 hybrids. Factors other than divergence in genome size were also shown to have an effect on chromosome pairing in other hybrid combinations.Key words: chromosome pairing, DNA content, Festuca, hybrids (interspecific).
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