细叶满江红大孢子果的扫描电镜观察

细叶满江红(Azolla filicufoides Lam.)是优良的水生绿肥和饲料作物,又是用孢子果越夏和过冬的好材料,植物学者对其进行广泛研究已有悠久的历史。本文记述了电镜扫描观察到的大孢子果及小孢子囊泡胶块的图象;认为大孢子果表面同小孢子囊泡胶块的附着力,与大孢子果的萌发力有相关性;指出孢子果带菌,将是导致高温季节大田满江红发生毁灭性病害“自然倒萍”的主要因素之一。

SCANNING ELECTRON MICROSCOPIC OBSERVATIONS ON THE MEGASPOROCARPS OF AZOLLA FILICULOIDES

Azella filiculcides Lam. is primarily cultivated as a green manure for rice or as a food for animals during the present period. If care is not taken,Azolla crops will be destroyed by insects and disease in 3-5 days during the very hot weather of the summer, but the sporocarps of Azolla are the better materials which can pass the natural environmental disaster. This paper has primarily discussed the scanning electron microscopic observations on the megasporocarps and the massulae of microsporangium in Azolla filiculoides. The details have been recorded by photographs. It is con- sideredthat the adhesion between the surface of the megasporocarp and the massulae of the microsporangium is relative to the germination power of the megasporocarp. It is pointed out that the mycelia stuck to the megasporocarp might be one of the reasons causing Azolla crops to be destroyed by disease in the hot weather.