Summary
The development of microsporangium inPedalium murex Linn., is of the normal type. The cells of the primary sporogenous layer function directly as the pollen mother cells. The tapetum is multi-nucleate and exhibits nuclear fusion, prior to disintegration.
InSesamum andPedalium the embryo-sac development conforms to the normal type. Chalazal nutritive tissue is met with inPedaliuin, while it is absent inSesamum.
Endosperm is cellular. The occurrence of chalazal endosperm haustoria is reported in both the genera. No micropylar haustorium was observed. The chalazal haustorium is single celled and four nucleate inPedalium, while it is made up of two bi-nucleate cells isSesamum.
The diploid chromosome numbers ofPedalium murex andMartynia diandra have been determined for the first time to be sixteen and thirty-two respectively. In the case ofPedalium the number is confirmed from meiotic counts also which shown=8.
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Communicated by Professor T. S. Raghavan
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Srinivasan, A.R. Contribution to the morphology ofPedalium murex Linn. andSesamum indicum D.C.. Proc. Indian Acad. Sci. 16, 155–164 (1942). https://doi.org/10.1007/BF03046185
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DOI: https://doi.org/10.1007/BF03046185