| 单词 | ascospore |
| 例句 | Each nucleus undergoes mitosis, resulting in eight ascospores, which are also arranged in a row at the tip of the hyphae. Fundamentals of Biology 2015-01-01T00:00:00Z That is, inside the ascus, a diploid fungal nucleus undergoes meiosis — or sexual, reductive cell division — to produce ascospores. How Ballistic Cup Fungi Fire Their Spores (and Look Cool Doing It) 2012-09-05T20:45:15.367Z One species, S. heteroica, is heteroecious; the ascospores infecting the leaves of Vaccinium uliginosum, while the conidia which then arise infect only Ledum palustre. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 3 "Frost" to "Fyzabad" 2011-08-15T02:00:28.473Z The spores of Ferns, ascospores, and some conidia are also liberated explosively. The New Gresham Encyclopedia Volume 4, Part 3: Estremoz to Felspar 2011-04-14T02:00:59.373Z These latter are thus seen to be carpospores, comparable to those of Red Alg�, and to the ascospores of Ascomycetes. The New Gresham Encyclopedia. Vol. 1 Part 3 Atrebates to Bedlis In each ascus, two or more haploid ascospores fuse their nuclei in karyogamy. Fundamentals of Biology 2015-01-01T00:00:00Z You can count the eight ascospores in this ascus: The tasty, tasty asci of a Morchella sp. How Ballistic Cup Fungi Fire Their Spores (and Look Cool Doing It) 2012-09-05T20:45:15.367Z By this means the ascus cell is brought uppermost, and after the fusion of the two nuclei it develops enormously and produces the ascospores. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 3 "Frost" to "Fyzabad" 2011-08-15T02:00:28.473Z Typically, an ascus is a cylindrical or club-shaped structure containing at maturity eight ascospores, which are usually liberated explosively and thereafter dispersed by the wind. The New Gresham Encyclopedia. Vol. 1 Part 2 Amiel to Atrauli Ascospore smooth or slightly wrinkled, free from the sides of the stem, attached at the tip of the stem, bell-shaped, thin; hymenium covering the entire surface of the ascospore; asci cylindrical, 8-spored. The Mushroom, Edible and Otherwise Its Habitat and its Time of Growth The sexual form is recognized by the appearance of microscopic, black, short-beaked fruiting structures or perithecia that are filled with sticky ascospores. Northern Nut Growers Association Report of the Proceedings at the 43rd Annual Meeting Rockport, Indiana, August 25, 26 and 27, 1952 Second, the wind plays a large part in local ascospore dissemination. Northern Nut Growers Association, Report of the Proceedings at the Third Annual Meeting Lancaster, Pennsylvania, December 18 and 19, 1912 Just as the uredospores and aecidiospores both show these specialized characters in the case of Puccinia graminis so we find that both the conidia and ascospores of E. graminis show this phenomenon. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 3 "Frost" to "Fyzabad" 2011-08-15T02:00:28.473Z There is a winter spore stage, or technically, the ascospore stage, which comes, as a rule, later in the development of the fungus. Northern Nut Growers Association Report of the Proceedings at the Second Annual Meeting Ithaca, New York, December 14 and 15, 1911 For instance, in the asci of lichens there are formed from a portion of the protoplasm four or more small ascospores, which secrete a cell-wall and lie loose in the ascus. Scientific American Supplement, No. 531, March 6, 1886 Both the ascospores of the sexual form and the endospores or conidia of the asexual form will cause wilt if the spores are injected into oak trees. Northern Nut Growers Association Report of the Proceedings at the 43rd Annual Meeting Rockport, Indiana, August 25, 26 and 27, 1952 Cultural distinctions are apparent and the ascospores differ in size and shape so that no further confusion need occur. Northern Nut Growers Association, Report of the Proceedings at the Third Annual Meeting Lancaster, Pennsylvania, December 18 and 19, 1912 Then by a special method, described first by Harper, a mass of protoplasm is cut out round each nucleus; thus eight uninucleate ascospores are formed by free-cell formation. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 3 "Frost" to "Fyzabad" 2011-08-15T02:00:28.473Z Other insects might feed on the fungus mats that are exposed through cracks in the bark and carry both the sticky ascospores and conidia to other trees. Northern Nut Growers Association Report of the Proceedings at the 43rd Annual Meeting Rockport, Indiana, August 25, 26 and 27, 1952 |
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