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Embryological studies inEriocaulon quinquangulare Linn.

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Proceedings / Indian Academy of Sciences

Abstract

An account of sporogeneses, development of gametophytes, endosperm and embryo inEriocaulon quinquangulare Linn. is presented.

The unisexual flowers are borne on a terminal globose head. The development of floral parts is acropetal.

The hypodermal archesporium in an anther is one to two-celled. The wall of the mature anther is four-layered; the innermost of these layers functions as the glandular tapetum. The microspore tetrads are of isobilateral and decussate type. A well-developed stomium is present. The pollen grains are generally shed at two-celled stage.

The tenuinucellar ovules are bitegminal and pendulous. The primary archesporium is hypodermal and functions directly as the megasporocyte. The megaspore tetrads are of linear, obliquely linear and T-shaped type. The chalazal megaspore is functional and develops into a Polygonum type of embryo-sac. The antipodals form the most conspicuous part of the embryo-sac and are linear in arrangement.

Endosperm is free nuclear and becomes cellular later. Embryo development is of Asterad type.

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Authors and Affiliations

  1. Department of Botany, Maharani’s College, Bangalore

    Maqbool Begum

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  1. Maqbool Begum
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Additional information

Communicated by Prof. L. Narayana Rao,f.a.sc.

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Begum, M. Embryological studies inEriocaulon quinquangulare Linn.. Proc. Indian Acad. Sci. 67, 148–156 (1968). https://doi.org/10.1007/BF03053866

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  • DOI: https://doi.org/10.1007/BF03053866

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