Abstract
Cytological studies ofChrysanthemum carinatum have shown that the endosperm was free nuclear in the beginning, but, as the wall formation commenced very early, it was cellular for most of its life. The endosperm, in general, was triploid with 3n=27 chromosomes, but polyploidy (6n) and aneuploidy also occurred in a small number of cells.
Although most of the nuclei in the main part of the endosperm were uniform in size and shape, they showed some variation in the haustorial region. The possible cause of this variation has been suggested to be endoduplication.
Mitotic aberrations such as bridges, laggards and multipolar divisional stages appear to be the probable causes for the failure of endosperm in some of the immature seeds, resulting in a low seed set.
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Kapoor, B.M., Tandon, S.L. Contributions to the cytology of endosperm in some angiosperms-VIII.Chrysanthemum carinatum L.. Genetica 35, 197–204 (1964). https://doi.org/10.1007/BF01804888
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DOI: https://doi.org/10.1007/BF01804888