植物研究2018，Vol.38Issue(2)：212-217,6.DOI:10.7525/j.issn.1673-5102.2018.02.007
深山含笑大、小孢子发生和雌、雄配子体发育研究
Mega-and Microsporogenesis and Development of Female and Male Gametophytes in Michelia maudiae Dunn
摘要
Abstract
The mega-and microsporogenesis and development of female and male gametophytes in Michelia maudiae 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 M.maudiae 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 M.maudiae 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 M.maudiae undeveloped when flowering,withers away after flowering,were mostly developed unnormally.The study had accumulated information on the reproduction and hybridization in M.maudiae Dunn.关键词
深山含笑/大、小孢子发生/雌、雄配子体发育Key words
Michelia maudiae Dunn/mega-and microsporogenesis/female and male gametophytes分类
农业科技引用本文复制引用
熊海燕,刘志雄..深山含笑大、小孢子发生和雌、雄配子体发育研究[J].植物研究,2018,38(2):212-217,6.基金项目
国家自然科学基金(31101202)Project supported by National Natural Science Foundation of China(31101202) （31101202）
