蜈蚣草性器发育的观察  

Development of Sexual Organs in Pteris vittata L.

作　　者：李姮[1] 张凌献[1] 程薪宇[1,2] 刘保东[1] 

机构地区：[1]哈尔滨师范大学生命科学与技术学院,哈尔滨150025 [2]中国科学院植物研究所,北京100093

出　　处：《西北植物学报》2010年第4期708-712,共5页Acta Botanica Boreali-Occidentalia Sinica

基　　金：国家863项目(2007AA021405)

摘　　要：用石蜡切片法研究了蜈蚣草(Pteris vittata L.)性器发育的全过程,结果表明精子器与颈卵器都由原叶体表面的细胞发育而来。但二者不是同源的,精子器由基细胞、环细胞和盖细胞和精细胞构成,成熟后以盖裂方式开放。卵细胞成熟后,颈卵器内的腹沟细胞与颈沟细胞都解体,颈卵器开放时前端几个细胞破裂,并释放粘性物质以吸引精子。The development of sexual organs of Pteris vittata L.were studied by serial sections.Both antheridium and the archegonium were developed from superficial cell of prothallus separately.The antheridium,dehisces after mature,is consists of foot cell,choanocytes cell,opercular cell and sperm cells.Neck canal cell and ventral canal cell dissolved after the maturation of egg,and the topmost cells will lost when the archegonium open,releasing glutinous material which can attract the sperms come into the archegonium.

关 键 词：蜈蚣草 精子器 颈卵器 发育 

分 类 号：Q944.57[生物学—植物学]