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Development of Embryo Sac and Endosperm in Chrozophora rottleri A. Juss. A Reinvestigation

R. N. Kapil
Botanical Gazette
Vol. 117, No. 3 (Mar., 1956), pp. 242-247
Stable URL: http://www.jstor.org/stable/2473411
Page Count: 6
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Development of Embryo Sac and Endosperm in Chrozophora rottleri A. Juss. A Reinvestigation
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Abstract

1. The ovules in Chrozophora rottleri A. Juss. are crassinucellate, bitegmic, and hemianatropous. The nucellus shows a well-developed beak which grows out of the micropyle and reaches almost to the placenta. 2. The hypodermal archesporial cell cuts off a parietal cell. The chalazal cell of a linear tetrad of megaspores produces the 8-nucleate gametophyte. Development thus conforms to the Polygonum type. 3. The endosperm is of the Nuclear type. Centripetal wall formation occurs at the heart-shaped stage of the embryo, and ultimately cellular endosperm occupies the entire embryo sac.

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