蕨菜配子体的生长发育特点

The Feature of Gametophyte Growth and Bearing on Pteridium aguilium Var.

选用成熟的蕨菜孢子播种于基质为母土的培养皿中，观察其生长进程及配子体、幼孢子体的生长速度发现，受精早晚与配子体大小没有直接的关系，而与配子体成熟度即精卵器产生早晚密切相关；受精后配子体（原叶体）由大变小，由绿变黄，由厚变薄，最后死亡，但死亡早晚个体间存在明显差异。

Selecting and using mature spore of Pteridium aguilium Var. and seedingit into container of soil.We observed its growth and bearing stage and growth rate ofsmall sporophyte,It was found that tilne of feritilization had no direct relationship withsize of gametophyte. but had abvious relation with the mature degree of gametophyte orthe production of sperm and ovum. After fertilization gametophyte changed from smallto big,green to yellow,thick to thin,anddead at last.