报春苣苔雌配子体发育的研究  

Study on Female Gametophyte Development of Primulina tabacum

作　　者：刘诗赟 曾敏钿 王厚麟[1] 缪绅裕[1] 陈健辉[1] 

机构地区：[1]广州大学生命科学学院,广东 广州

出　　处：《植物学研究》2021年第1期35-46,共12页Botanical Research

摘　　要：以报春苣苔(Primulina tabacum)为材料,采用常规石蜡切片法对其进行胚胎学研究,研究其雌配子体发育规律,了解该物种生殖与环境的关系,从胚胎发育角度对该植物的濒危进行探讨。观察结果显示:报春苣苔胚珠为倒生型,侧膜胎座,两心皮一心室;薄珠心;胚囊发育为蓼型胚囊。在大孢子发育、雌配子体形成的不同发育阶段,均出现有各种的败育现象。其自身繁衍能力不强,在生殖过程中出现的各种异常发育,是导致其濒危的重要原因之一。The embryology of Primulina tabacum was studied by conventional paraffin section method to study the development regularity of female gametophyte, to understand the relationship between reproduction and the environment of the species, as well as the endangerment were also explored from the perspective of embryo development. Results showed the following: Anatropous ovule, parietal placentation, two carpels and one locule, tenuinucellate ovule, polygonum type embryo sac. Various abortive phenomena occurred at different stages of megaspore development and female gametophyte formation. Its own reproductive ability was not strong, and various abnormal developments in the reproductive process, was one of the important reasons leading to its endangerment.

关 键 词：报春苣苔 雌配子体 胚胎 发育 败育 石蜡切片法 

分 类 号：Q94[生物学—植物学]