Abstract
I HAVE recently been investigating the cytology of a number of dicious plants with the intention, if possible, of throwing light on the matter of sex chromosomes in plants. Incidentally, I took up the genus Lychnis, one species of which, Melandryum rubrum, Garcke (L. dioica, L.), has been examined previously by Strasburger. In detailing his observations he states that, in both sexes, there are twelve pairs of chromosomes present in the somatic cells. In the heterotype division he found one pair of bivalents much larger than the others, but the individual members of this pair were of equal size; thus no signs of the disparity indicating the possibility of two types of microspore were revealed.
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BLACKBURN, K. Sex Chromosomes in Plants. Nature 112, 687–688 (1923). https://doi.org/10.1038/112687c0
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DOI: https://doi.org/10.1038/112687c0
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