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ˌheteroˈthallic
ˌheteroˈthallic adj. 
/ˌhɛdərəˈθælɪk/ Biology (of a fungus) having an incompatibility system by which only genetically different strains can undergo nuclear fusion during sexual reproduction.
Brit. /ˌhɛt(ə)rə(ʊ)ˈθalɪk/
, /ˌhɛt(ə)rə(ʊ)ˈθalɪk/U.S. /ˌhɛdəroʊˈθælɪk/
, /ˌhɛdəroʊˈθælɪk//ˌhɛdərəˈθælɪk/ΘΚΠ
the world > plants > particular plants > fungi > [adjective] > of or exhibiting particular stage or condition
imperfect1798
perfect1854
heterothallic1904
homothallic1904
homokaryotic1916
1904 A. F. Blakeslee in Science 3 June 865 According to their method of zygospore formation, the various species among the Mucorineæ may be divided into two main categories, which may be designated as homothallic and heterothallic... In the heterothallic group..zygospores are developed from branches which necessarily belong to thalli or mycelia diverse in character, and can never be obtained from the sowing of a single spore.
1921 I. Mounce in Brit. Mycol. Soc. 7 199 The fruiting of a mycelium of a heterothallic Hymenomycete.
1959 Chambers's Encycl. VI. 117/1 Sporodinia grandis is homothallic, and a single spore from a sporangium will give rise both to sporangia and to zygospores, whereas Mucor is heterothallic, and a single spore gives rise only to sporangia.
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