1971 年 84 巻 995 号 p. 339-348
In a sordariaceous fungus, Gelasinospora reticulispora, ascocarps induced by white light irradiation after a period of dark incubation or by aging of the culture were typically ostiolate perithecia. But those triggered by the arrival of the hyphal tip at the distal end of the growth tube were nearly always devoid of an ostiole, so that spores were discharged in a cleistothecial manner. The asci developed at a similar rate irrespective of the methods of induction. In all the cases ascocarps were formed at various depths of the agar medium, and the orientation of asci was totally at random although it always coincided with the orientation of the ostiole if present.