Homosporous ferns produce sporophytes by intra gametophytic selfing, inter gametophytic mating, or apogamy.Gametangium ontogeny, genetic load, and ploidy affect the mating system of each species.
摘要同型孢蕨类的孢体同体自、体两类育系统或以无生殖的方式产生,体又分为体自和体两种方式。
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As I carefully brush the backs of my fingers against moss beds, tiny stalk-like beings tickle me. Jutting out of moss leaves, these stalks are known as sporophytes; each sporophyte contains a capsule of spores at its outermost end.
当我小心翼翼地用手指背面扫过苔藓时,细小茎状结构会挠得我发痒。这些茎从苔藓叶中探出来,被称为孢子体,每孢子体末端有孢子囊。
Having a dominant sporophyte introduced lots of advantages — like, while the spore-making generation of a bryophyte couldn't grow very far off the ground; the sporophytes of seedless vascular plants could grow much taller and larger, with more room for spore-producing organs.
拥有优势孢子体带来了很多好处——比如,苔藓植物产孢体不能长得离地面很远;而无籽维管植物孢子体可以长得更高更大,有更多空间容纳产孢器官。