湖南农业大学学报（自然科学版）2017，Vol.43Issue(5)：496-503,8.DOI:10.13331/j.cnki.jhau.2017.05.006
绵枣儿大小孢子的发生和雌雄配子体发育研究
Research on the genesis of megaspore and microspore inBarnardia japonica and the development of its gametophytes
摘要
Abstract
In order to enrich the contents of embryology research onBarnardia japonica, the megasporogenesis, microsporogenesis and development of female and male gametophytes were studied by means of paraffin-embedded sectioning technique. The results show that each floret of inflorescence usually has six stamens, and each anther has four chambers.The development of the anther wall, which is formed by epidermis, endothecium, tapetum and two middle layers, belongs to a dicotyledonous type, and the tapetum is glandular type. Microspore cytokinesis of mother cell is continuously split twice and resulted in medianly zygomorphic tetrad and tetrahedral tetrad. Mature pollen grain is 2-cell type. The pistil ofBarnardiajaponicais consisted of three carpels, and the ovary has three locules. Ovules are anatropous on axile placenta, bitegminous and crassinucellate. The development of embryo sac isclassified as endymiontype, and the mature embryo sac has seven cells and eight nuclei.关键词
绵枣儿/大孢子/小孢子/雌配子体/雄配子体Key words
Barnardia japonica/megaspore/microspore/female gametophyte/male gametophyte分类
农业科技引用本文复制引用
孙颖,王蕾,崔兰明,周蕴薇..绵枣儿大小孢子的发生和雌雄配子体发育研究[J].湖南农业大学学报（自然科学版）,2017,43(5):496-503,8.基金项目
中央高校基本科研业务费专项基金项目(2572017CA13) （2572017CA13）
