球子蕨精子器多样性的新观察

利用人工培养和石蜡切片技术,在光学显微镜下对球子蕨精子器的形态结构和着生位置进行了多样性观察。首次报道了过熟配子体的颈卵器萎缩消失,只有精子器正常发育,且其中肋有突起、中空、分层等现象。精子器可着生在中肋的外表面或埋生在中肋内部,也可以着生在中空中肋的内表面,精子器的结构也各不相同。讨论了球子蕨精子器形态结构及着生位置多样性的系统学意义,为探讨相关类群的系统演化补充了全新的基础资料。

New Observation on Multiformity of the Antheridium in Onoclea sensibilis

With the methods of artificial cultivation and paraffin technology, It was observed that the morphogenesis of antheridium in Onoclea sensibilis and the multiformity of growing location. It is the first reported that the archegonium of overripe gametophyte shriveled and then disappeared, but the antheridium is normal, and the morphogenesis of the rachis contains protuberance, hollow and layering. The growing locations of antheridiums are different. For example, some are growth in the outer surface of the rachis or immersed in the rachis, some are growth in the hollow inner surface of the rachis. The structures of antheridium are also various. This article disscussed that phylogenetic significance on the morphogenesis of antheridium in Onoclea sensibilis and the multiformity of growing location and supplied basic data for discussing the systemic evolution of related groups.