| 单词 | budding | ||||||
| 释义 | buddingbud·dingB0529800 (bŭd′ĭng)budding(ˈbʌdɪŋ)bud•ding(ˈbʌd ɪŋ)adj.
buddingbud(bad) nounbuddingbud outa budding geniusbud outbudding geniusBuddingbudding,type of graftinggrafting,horticultural practice of uniting parts of two plants so that they grow as one. The scion, or cion, the part grafted onto the stock or rooted part, may be a single bud, as in budding, or a cutting that has several buds. ..... Click the link for more information. in which a plant bud is inserted under the bark of the stock (usually not more than a year old). It is best done when the bark will peel easily and the buds are mature, as in spring, late summer, or early autumn. Budding is a standard means of propagating roses and most fruit trees in nurseries. See propagation of plantspropagation of plants is effected in nature chiefly sexually by the seed and the spore, less often by rhizomes and other methods (see reproduction). Vegetative means include cutting, layering, grafting, tissue culture, and division of the roots (see perennial) and of the tubers ..... Click the link for more information. . Buddinga method of vegetative propagation of plants in which a bud of a cultivated variety is grafted to wildling stock. A new plant develops from the bud. Budding is performed in nurseries usually in the summer (late July or early August for pome fruits, somewhat earlier for drupaceous plants). Buddingone of the methods of asexual (vegetative) reproduction of animals and plants. Budding is the formation on the parent body of a bud—an outgrowth from which a new individual develops. Plants capable of budding include certain ascomycetes fungi (in yeasts, budding is the principal means of reproduction), a number of basidial fungi, and liverwort mosses (which reproduce by means of brood buds, or bulbels). Among animals, budding is characteristic of protozoans (some flagellates, infusorians, and sporozoans), sponges, coelenterates, some worms, bryozoans, pterobranchs, and tunicates. Budding in animals may be external or internal. External budding may be parietal, with the buds forming on the parent body, or stolonate, with the buds developing on special processes known as stolons (some coelenterates and tunicates). With internal budding, the new individual develops from an isolated area inside the parent body. Examples are the gemmules of sponges and the statoblasts of bryozoans, which have protective membranes and serve mainly to ensure survival when the parent body perishes in the winter or during a drought. In a number of animals, the budding process remains incomplete and the young individuals remain attached to the parent body. As a result, there arise colonies made up of numerous individuals (colonial organisms). Sometimes budding is artificially induced by various influences, such as burns or cuts, on the parent body. A. V. IVANOV budding[′bəd·iŋ]buddingbudding[bud´ing]gem·ma·tion(jem-ā'shŭn),buddingCell biologyThe process in which portions of cellular membranes from the endoplasmic reticulum, Golgi apparatus, nucleus and cell membrane itself are assembled into a vesicle, an intracellular organelle that shuttles proteins, secretory products and breakdown products throughout the cells. Microbiology A type of cell division in fungi and in protozoa in which one of the daughter cells develops as a smaller protrusion from the other. Usually the position of the budding cell is defined by polarity in the mother cell; in some protozoa the budded daughter is in the cytoplasm of the other daughter. gem·ma·tion(jem-ā'shŭn)Synonym(s): budding. buddinga method of ASEXUAL REPRODUCTION common in some lower animal groups (e.g. COELENTERATES) in which part of the body wall bulges outwards and eventually forms a new individual which becomes detached from the parent. Budding can also take place in single-celled organisms such as yeasts, but here the process is more akin to MITOSIS with daughter cells of unequal size being produced. The production of ‘plantlets’ from the leaf margins of Bryophyllum is also called budding by some biologists. Certain VIRUSES can be released from cells or nuclei by budding. The virus interacts with the plasma membrane or nuclear membrane (depending on the virus), which wraps around it, and a bud forms. The membrane then pinches off and forms an envelope around the newly extruded virus.budding
Synonyms for budding
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