Department of Plant Pathology, Wheat Genetics Resource Center, Kansas State University, 66506, Manhattan, KS, USA.
Theor Appl Genet. 1996 May;92(6):726-32. doi: 10.1007/BF00226095.
The C-banding technique was used to describe the chromosomes of a relatively recently-discovered Moroccan oat species, Avena agadiriana (2n=4x=28). A substantial amount of polymorphism for arm ratios and C-banding patterns was observed among five accessions of this species. However a common set of ten putatively homologous chromosomes was identifiable among the five accessions. The chromosomes of A. Agadiriana do not closely match those of any of the previously described diploid or tetraploid oat species in terms of their arm ratios and C-banding patterns. However, their overall C-banded appearance generally resembles the A/B/D groups of chromosomes of Avena species, rather than the more hetrochromatic C genomes. Implications of these findings in terms of chromosome evolution in the genus Avena are discussed.
C-带技术被用于描述一种最近发现的摩洛哥燕麦物种——Avena agadiriana（2n=4x=28）的染色体。在该物种的五个样本中，观察到臂比和 C-带模式存在大量多态性。然而，在这五个样本中可以识别出一组共同的十个假定同源染色体。A. Agadiriana 的染色体在臂比和 C-带模式方面与之前描述的任何二倍体或四倍体燕麦物种都不密切匹配。然而，它们的整体 C-带外观通常类似于燕麦属的 A/B/D 组染色体，而不是更异染色质的 C 基因组。讨论了这些发现对燕麦属染色体进化的影响。
