%0 Journal Article
%A LIU Zhi-Xiong
%A XIONG Hai-Yan
%T Mega-and Microsporogenesis and Development of Female and Male Gametophytes in <em>Michelia maudiae</em> Dunn
%D 2018
%R 10.7525/j.issn.1673-5102.2018.02.007
%J Bulletin of Botanical Research
%P 212-217
%V 38
%N 2
%X The mega-and microsporogenesis and development of female and male gametophytes in <em>Michelia maudiae</em> Dunn were investigated by using the paraffin section method. Anthers are tetradymous and the anther wall is composed of 5-7 layer of cells, Glandular tapetum, Cytokinesis in meiosis is modified simultaneous type, the tetrads are tetrahedral, isobilateral and decusate. Mature pollen grains are 2-cell type. The ovule of <em>M.maudiae</em> is anatropous bitegmic and nucellus thickly. The megaspore mother cells undergo meiosis divides into linear type tetrads, and the one in the chalazal end is functional, Polygonum type. The female and male gametophytes in spring-flowering <em>M.maudiae</em> were developed normally, heterogamy. The megaspore mothercells formed after the petals and stamen were withered. The development of microspore in autumn is in the period of sporozoic cell or primary spore, abortionthen. Megaspore in autumn-flowering <em>M.maudiae</em> undeveloped when flowering, withers away after flowering, were mostly developed unnormally. The study had accumulated information on the reproduction and hybridization in <em>M.maudiae</em> Dunn.
%U https://bbr.nefu.edu.cn/EN/10.7525/j.issn.1673-5102.2018.02.007