蕨类植物配子体发育的研究

STUDEES ON THE GAMETOPHYTES DEVELOPMENT IN FERNS

研究了福建观音座莲、华南紫萁、粗齿紫萁、粗齿桫椤、溪边凤尾蕨、蜈蚣草、狭翅铁角蕨、乌毛蕨等21种蕨类植物的配子体发育过程。结果如下:(1)对孢子和配子体性状的UPG-MA法聚类分析结果表明,秦仁昌分类系统中亲缘关系近的种类在孢子和配子体性状方面相似性也高,但也有少数例外的情况;(2)蕨类植物的配子体发育有许多共性,但也存在许多不同点;(3)配子体发育中出现的某些性状是稳定的,可以作为分类的依据。

The gametophytes developments of 21 fems are researched. They are Angiopteris fokiensis, Osmunda vachellii, Osmunda banksiifolia, Alsophila denticulate, Pteris excelsa, Pteris vittata, Aspleni-um wrightii, Blechnum orientale, etc. It suggests these: (1) The cluster analysis with UPGMA on the gametophytes characters of 21 fems indicates that the ferns which have close genetic relationship in QIN Ren - Chang classify system( 1978) are resemble in gametophytes characters, But there are some exception cases. (2)The gametophytes development of different species has many similar features, but there are many different features, too. (3)Some characters of gametophytes are stable, which can be used as classify evidence.