Abstract
Even in cases in which C-bands are intercalary in chromosomes of Allium carinatum and A. flavum. chiasmata are formed in immediately adjacent regions. This argues against considerations that there exists merely a spatial proximity between the commonly found distal chiasmata and the C-bands in corresponding regions, without any causal relation. Furthermore, a closely related species, A. sipyleum, without distinctly visible C-bands has a much less localized chiasma distribution in its bivalents.
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Loidl, J. Further evidence for a heterochromatin-chiasma correlation in some Allium species. Genetica 60, 31–35 (1982). https://doi.org/10.1007/BF00121454
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DOI: https://doi.org/10.1007/BF00121454