琼榄小孢子发生、雄配子体发育及花粉粒形态

doi:10.7525/j.issn.1673-5102.2017.02.004

植物研究 ›› 2017, Vol. 37 ›› Issue (2): 181-184.doi: 10.7525/j.issn.1673-5102.2017.02.004

琼榄小孢子发生、雄配子体发育及花粉粒形态

孔冬瑞¹, 李璐²

1. 鲁东大学生命科学学院, 烟台 264025;
2. 西南林业大学云南生物多样性研究院, 昆明 650224

收稿日期:2016-10-31 出版日期:2017-03-15 发布日期:2017-03-11
作者简介:孔冬瑞(1975-),女,讲师,主要从事植物系统学和植物生殖生物学研究。
基金资助:
鲁东大学博士启动基金（LY2015014）

Microsporogenesis,Male Gametogenesis and Pollen Morphology of Gonocaryum lobbianum

KONG Dong-Rui¹, LI Lu²

1. School of Life Science, Ludong University, Yantai 264025;
2. Yunnan Academy of Biodiversity, Southwest Forestry University, Kunming 650224

Received:2016-10-31 Online:2017-03-15 Published:2017-03-11
Supported by:
Startup Fundation for Doctors of Ludong University(LY2015014)

摘要/Abstract

摘要： 利用光学显微技术和电镜扫描技术研究了琼榄的小孢子发生、雄配子体发育和花粉粒形态以增加广义心翼果科的胚胎学和孢粉学资料。主要结果如下：（1）花药四孢囊；（2）花药壁四层，从外到内分别为表皮、具纤维性加厚的药室内壁、退化早的中层和细胞具2~4核的分泌型绒毡层；（3）小孢子母细胞胞质分裂同时型，形成四面体型排列的小孢子四分体；（4）成熟花粉粒为二细胞型；（5）花粉粒具3个隐形萌发孔，外壁为网状纹饰。琼榄与心翼果属的小孢子发生和雄配子体发育特征非常相似，稍有不同。琼榄的花粉粒形态特征与同属其它种基本相同。

关键词: 琼榄, 小孢子发生, 雄配子体发育, 花粉粒形态, 广义心翼果科

Abstract: We studied the microsporogenesis, male gametogenesis and pollen morphology of Gonocaryum lobbianum using light microscopy and scanning electron microscopy to enrich the embryological and palynological data of Cardiopteridaceae s.l. The main results are as follows:(1) The anther is tetrasporangiate; (2) The anther wall comprises the epidermis, fibrous endothecium, ephemeral middle layer and secretory tapetum with 2-4 nuclei in each cell; (3) The microspore mother cell undergo meiosis, cytokinesis is simultaneous and the tetrads are tetrahedral; (4) The mature pollen grains are two-celled; (5) The pollen grains are cryptoaperturate with three pores and the extin is reticulate. The characters of microsporogenesis and male gametogenesis of Gonocaryum are similar to those of Cardiopteris with a little difference. G.lobbianum is almost the same as the other species in the pollen morphological characters.

Key words: Gonocaryum lobbianum, microsporogenesis, male gametogenesis, pollen morphology, Cardiopteridaceae s.l.

中图分类号:

S667.5

孔冬瑞, 李璐. 琼榄小孢子发生、雄配子体发育及花粉粒形态[J]. 植物研究, 2017, 37(2): 181-184.

KONG Dong-Rui, LI Lu. Microsporogenesis,Male Gametogenesis and Pollen Morphology of Gonocaryum lobbianum[J]. Bulletin of Botanical Research, 2017, 37(2): 181-184.

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琼榄小孢子发生、雄配子体发育及花粉粒形态

Microsporogenesis,Male Gametogenesis and Pollen Morphology of Gonocaryum lobbianum

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