| 释义 |
vernalization|ˌvɜːnəlaɪˈzeɪʃən|
[f. vernal a. + -ization, as tr. Russ. yarovizátsiya.]
The technique of exposing seeds, young plants, etc., to low temperatures in order to hasten subsequent flowering; also, the natural process induced by cold weather which this technique imitates. Also transf. and fig.
1933,1934[see jarovization]. 1957V. Nabokov Pnin ii. 47 The vernalization of the visas, and the preparations [for going to America]. 1971E. O. Wilson Insect Societies viii. 154/1 The vernalization (chilling) effect that renders Myrmica and Formica brood queen⁓potent can be interpreted as a token stimulus. 1974A. J. Huxley Plant & Planet x. 100 In beet..the rosette normally made in the first year..requires winter chilling for flowering the following summer. This winter chilling is called vernalization. Ibid. xxvii. 315 Vernalization consists..in giving the seed to be sown in spring a cold period..with a small amount of water.
Hence (by back-formation) ˈvernalize v. trans., to treat or affect (seeds, etc.) in this way; ˈvernalized ppl. a. (in quots. transf.), ˈvernalizing vbl. n.
1933Whyte & Hudson in Bull. Imperial Bureau Plant Genetics No. 9. 8 (heading) Technique for vernalizing long-day plants. 1946Nature 5 Oct. 485/2 The time taken for development to have begun in all the vernalized [sponge] gemmules..is less than in December. 1947Ibid. 4 Jan. 32/1 This [sc. premature flowering] may be due..to a vernalizing effect on the..germinated seed..of naturally experienced low soil..temperatures in early spring. 1971E. O. Wilson Insect Societies viii. 150/1 It is from some of these vernalized larvae that the yearly crop of queens is matured in the spring. 1976Sci. Amer. Sept. 99/3 The crop flowers and produces grain in the spring after being vernalized, or induced to flower, by the low temperatures in winter. |