Abstract
Meiotic analysis of 21 plants from a single population of Gibasis linearis which contained from 0 to 6 apparently identical B chromosomes showed that the mean chiasma frequencies were significantly higher with increasing numbers of Bs. It was also found that those meiotic cells of a 5B plant which contained fewer than five B chromosomes showed a marked fall in chiasma frequency, demonstrating that the influence of B chromosomes on chiasma formation in A chromosomes acts at a cellular rather than a whole-anther level.
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Brandham, P.E., Bhattaraj, S. The effect of B chromosome number on chiasma frequency within and between individuals of Gibasis linearis (Commelinaceae). Chromosoma 64, 343–348 (1977). https://doi.org/10.1007/BF00294942
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DOI: https://doi.org/10.1007/BF00294942