摘要
使用31个ISSR引物对山羊草属Aegilops多倍体植物及其祖先二倍体(共23种)的基因组进行了分析,结果表明:与其二倍体祖先种相比,异源多倍体物种的基因组发生了很大变化。在含U基因组的异源多倍体物种中,U基因组相对而言变化很小,而其他基因组则发生了不同程度的变化。这表明当U基因组与其他基因组共存于多倍体物种中时,U基因组表现出较强的“同化效应”。对这些基因组的进化进行了讨论。
Genomic evolutions were characterized by 31 ISSR （inter-simple sequence repeat） primers among 23 species in the genus Aegilops. The results indicate that the genome constituents of allopolyploid species had changed greatly through evolution compared with their ancestral diploid species. Genome U showed little alterations in U-containing allopolyploids, while others had undergone changes after allopolyploidization. In addition, genome U also displayed strong assimilation effect when it coexisted with other genomes, and the other genomes changed to varying degrees. The evolutionary changes of these genomes were discussed.
出处
《植物分类学报》
CSCD
北大核心
2006年第3期286-295,共10页
Acta Phytotaxonomica Sinica
基金
Supported by the National Natural Science Foundation of China,Gran t No.30170063.
