Kaszab Zoltán (szerk.): A Magyar Természettudományi Múzeum évkönyve 64. (Budapest 1972)

Babos, M.: Investigations on the spore germination of Coprinus radians Desm.

pH 7,0 and 7.7 germination commencing after 3.5 hours pH 6.0 germination commencing after 3.5—4.5 hours pH 5.1 germination commencing after 5.5 hours pH 3.9 germination commencing after 24 hours pH 2.9 no germination occured within 24 hours The optimum germination temperature for Coprinus radians is 24 °C (2 hours), but it is rapid also at a lower temperature (3 hours about 20 °C) ; nor do lower temperature values, about 3-4 °C, mean any special inhibition to germination: spores began germinating after 72 hours at that temperature. It is highly interesting to compare the observations relating to drought tolerance of Coprinus radians with BOHUS's (1956) similar experiments concerning the resistance to desiccation of pure cultures of higher fungi (mainly Agaricales species partly tinder species). BOHUS examined the revival of the vegetative mycelium placed in favourable conditions after an exposure to a dry season of 2-4 months (possibility in our climate) and to a dry period of 6-8 months (never occurring in Hungary). Sterile bits of wood, interwoven with the mycelia of the investigated fungi were placed after exposure to the respective dry period, onto malt-agar substrate, with the following results: Table 7 Reactivation ot dry-stored mycelia in optimum conditions Duration of dry period Reactivation of the examined mycelia 2 months 100 % 4 months 86% 6 months 71 % 8 months 53% Bonus's observations on Coprinus species may also be submitted: Table S Reactivation of the mycelia of Coprinus species in optimum conditions after a dry state of 2-8 months Species Duration of dry period Species 4 Species months C. atramentarius 1. + C. atramentarius 2. C. eomatus 1. + C. eomatus 2. + -r C. micaceus + + C, picaceus + + -