| 释义 |
gigas, a. Bot.|ˈdʒaɪgəs|
[a. Gr. γίγας: see giant.]
Of or designating a polyploid form of a plant which is larger and more vigorous than the normal form.
1915Amer. Naturalist XLIX. 703 Both gigas forms are more persistently biennial in habit than their parents. 1939Sinnott & Dunn Princ. Genetics (ed. 3) xiv. 321 A case in mosses (Bryum) where an autotetraploid (2n gametophyte, 4n sporophyte) showed gigas characters. 1946Nature 22 June 843/2 Isolations were made from these large-spored colonies and ‘gigas’ lines established. 1967Briggs & Knowles Introd. Plant Breeding xxi. 268 Plant organs may show some increase in size, termed gigas characteristics. 1970R. Gorer Devel. Garden Flowers i. 39 The leaf, or any other part of a gigas plant, contains not only larger cells than the wild type, but also more of them. |