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True endomitosis in the anther tapetum of the three Cymbidium species viz. C. aloifolium, C. devonianum and C. tigrinum is described. In these Cymbidiums, most tapetal cells go through endomitosis instead of either normal mitosis or so called “inhibited” mitosis. The nuclear membrane does not disappear, but during metaphase the chromosomes are considerably condensed far more than in normal mitosis,...
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