An embryological study of Isotoma longiflora Presl

Kausik, S. B. ; Subramanyam, K. (1945) An embryological study of Isotoma longiflora Presl Proceedings of the Indian Academy of Sciences, Section B, 21 (5). pp. 269-278. ISSN 0370-0097

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1. The anther shows a wall with only three layers; the tapetum becomes binucleate; pollen grains are tri-nucleate at shedding stage. 2. The ovary has innumerable anatropous ovules attached on a massive central placenta. Megasporogenesis proceeds normally and the embryo sac is formed according to the normal type. 3. The embryo is formed according to he Capsella-type. 4. Endosperm isab initio cellular, and is formed according to thePhyteuma-type described by Rosen. 5. A slight departure from the above type is met with in a large propertion of ovules, and since this is also quite a distinctive one, it may be regarded as a type, theIsotoma-type. 6. A reference to the systematic position of the genusIsotoma is made in the paper.

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Deposited On:11 Apr 2011 13:08
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