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. 2014 Oct 1;3:575. doi: 10.1186/2193-1801-3-575

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© González-Gutiérrez et al.; licensee Springer. 2014

This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited.

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Megasporogenesis of Agave tequilana Weber. a) Diploid megaspore mother cell. b) Diad after the first meiotic division formed by two haploid cells. c) Tetrad after the second meiotic division composed by four haploid cells. d) Three degenerating megaspores and one intact functional megaspore located at the chalazal pole of the future embryo sac. ch = chalaza, m = micropyle, mmc = megaspore mother cell, d = dyad, t = tetrad, chm = chalazal megaspore, dm = degenerating megaspores. Bars = 10 μm.