A COMPARATIVE STUDY OF SEXUAL REPRODUCTION IN FOUR SPECIES OF CHLAMYDOMONAS

Trainor , Francis R. (U. Connecticut, Storrs.) A comparative study of sexual reproduction in four species of Chlamydomonas. Amer. Jour. Bot. 46(2) : 65-70. 1959.—This paper reports results of comparative experiments on some factors affecting sexual reproduction in 4 species of Chlamydomonas. Sexuality can be controlled in 3 of these species (C. chlamydogama, C. eugametos and C. reinhardti) by the level of ammonium nitrate in the harvesting medium. It was demonstrated that periodicity of illumination was of importance for high zygospore yields with C. chlamydogama and C. eugametos. Other variables, e.g., various aspects of nitrogen level, illumination and inter-fertility, were investigated and the results summarized in tabular form.