Summary
A reinvestigation of the embryo-sac ofEuphorbia heterophylla shows that the development is not of theAdoxa- type as reported by Sanchez (1938) but of theNormal- type. The megaspore-mother cell gives rise to a tetrad of megaspores of which the chalazal cell functions to produce a normal 8-nucleate embryo-sac.
It is pointed out that as a rule vacuolation and polarity are not seen in embryo-sacs until after the reduction divisions are over. They form such reliable guides that all cases, where the reported observations are not in accordance with the above, deserve a fresh study.
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Maheshwari, P. The embryo-sac ofEuphorbia heterophylla L.—a reinvestigation. Proc. Indian Acad. Sci. 15, 158–166 (1942). https://doi.org/10.1007/BF03048698
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DOI: https://doi.org/10.1007/BF03048698