单词 | homothallic |
释义 | > as lemmashomothallic homothallic adj. Brit. /ˌhəʊmə(ʊ)ˈθalɪk/ , /ˌhɒmə(ʊ)ˈθalɪk/ , U.S. /ˌhoʊməˈθælɪk/ , /ˌhɑməˈθælɪk/ Biology (of a fungus) having no genetically controlled incompatibility system; not heterothallic.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 mere formation of fruit-bodies by a monosporous mycelium is no clear indication that the fungus is homothallic. 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. 1967 M. E. Hale Biol. Lichens iii. 42 There is good reason..to suppose that lichens are homothallic. < as lemmas |
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