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9 10
Fig. 1 The abnormal appearance of the meiotic prophase cells. The stages
probably correspond lo pachytene-diploptene-diakinesis. 4—5: First anaphase with
sticky bridges. (i -7: Second anaphase with ditto. 8: Showing Ihe furious
cyto-niixis dnring prophase. 9: Tapetum cell at anaphase with sticky bridges. 10: The
abnormal shape of the ripe pollen. Magnification: 1—7, 9: 1850 X; 8. 10: 650 X.
inay contain cells at diakinesis whereas the other end may contain cells at
anaphase I. Such a braking effect was also observed by UPCOTT (1939) in the
genically male sterile Lathijrux odoratus under conditions ralher similar lo
lliose described here.
As might be expected from the experiences of olher authors, the meiosis
and the meiotic chromosomes seem to be verv liable to damage, whereas the
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