Abstract
IN the pachyphase of Lilium pardalinum, in specimens fixed with chromic-acetic-formaldehyde, and stained with iron-brazilin, there were estimated to be 2193 chromomeres, each usually consisting of two pairs of chromioles. The average diameter of the chromioles was estimated at 0.23 micron, and the average distance between the centres of neighbouring chromomeres was calculated as 0.67 micron. Hence it could be deduced that an approximation of the chromomeres until they were in close contact would decrease the total length of the bivalents from 1469 microns at pachyphase to 504 microns (at diplophase). But in Lilium longiflorum, the maturation divisions of which closely resemble those of L. pardalinum, the total length of the twelve bivalents at late diaphase and at metaphase (and also the total length of twelve of the split anaphase chromosomes) was only about 150 microns.
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BELLING, J. The Contraction of Pachyphase Chromosomes in Lilium. Nature 122, 685 (1928). https://doi.org/10.1038/122685b0
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DOI: https://doi.org/10.1038/122685b0
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