heterothallism defined in 1951 yearheterothallism - heterothallism;
heterothallism - (Of fungi, algae) condition in which sexual reproduction occurs only through participation of two thalli, each of which is self-sterile. In Fungi, includes morphological heterothallism where sexes are segregated, some thalli being male, others female; and physiological heterothallism where interacting thalli, often labelled plus and minus strains, show no morphological difference such as might be recognized as a difference in sex. Includes forms in which both thalli bear male and female sex organs and others which have no sex organs, union between strains depending on hyphal fusions. Compare with: Homothallism.
near heterothallism in Knolik
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