STUDIES ON THE HETEROKARYOSIS AND THE FACTORS AFFECTING THE NUCLEAR RATIOS OF HETEROKARYONS IN HELMINTHOSPORIUM SETARIAE
粟长蠕孢菌的异核现象及异核体核型比影响因素的研究

Heterokaryons were formed when complementary auxotrophs of Helmin- thosporium setariae were paired on CzM.Heterokaryotic mycelium was composed of a mixture of homokaryotic and heterokaryotic cells.Protoplasts isolated from the Heterokaryotic myce- lium grown on CzM consisted of 46.7% heterokaryotic and 53.3% homokaryctic cell.While only 0.06% conilia formed by the heterokaryotic mycelium were heterokaryotic.Nuclear ratios in heterokaryons were influenced by the selection pressure of media.