| 单词 |
macrospore |
| 释义 |
macrospore|ˈmækrəʊspɔə(r)|
[f. macro- + spore.]
a. Bot. = megaspore (s.v. mega-).
b. Zool. One of the spore-like parts into which a monad subdivides.
1859Todd Cycl. Anat. V. 243/1 The development of the prothallium commences..several months after the macro⁓spore has been sown. 1870Hooker Stud. Flora 469 The macrospores of Selaginella and Isoetes develop a cellular prothallus. 1875Bennett & Dyer Sachs' Bot. 335 The separation of the sexes is already prefigured by the two kinds of spores, the Macrospores being female, in so far as they develope a small prothallium. 1955G. M. Smith Cryptogamic Bot. (ed. 2) II. x. 281 The heterospory was pronounced [in the fossil fern Archaeopteris], the macrospores having a diameter about ten times that of microspores. 1965[see megaspore s.v. mega-]. 1974Mycopathologia et Mycologia Applicata LIII. 56 Some fungi..produce two spore states which are similar in type but differ in size. The large septate spores are frequently referred to as macrospores and the smaller, nonseptate spores as microspores. The term macrospore is also used infrequently as synonymous with chlamydospore... This latter usage seems undesirable. |
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单词 macrosporophyll 释义 macrosporophyll Bot.|mkrsprfl|[f. macro- + sporophyll (s.v. spor......