vernalization

vernalization
ver·nal·i·za·tion (vûr'nə-lĭ-zāʹshən) n.
Subjection of seeds or seedlings to low temperature in order to hasten plant development and flowering.
  verʹnal·ize' v.

* * *

      the artificial exposure of plants (or seeds) to low temperatures in order to stimulate flowering or to enhance seed production. By satisfying the cold requirement of many temperate-zone plants, flowering can be induced to occur earlier than normal or in warm climates lacking the requisite seasonal chilling. Knowledge of this process has been used to eliminate the normal two-year growth cycle required of winter wheat. By partially germinating the seed and then chilling it to 0° C (32° F) until spring, it is possible to cause winter wheat to produce a crop in the same year.

      Devernalization can be brought about by exposing previously vernalized plants or seeds to high temperatures, causing a reversion to the original nonflowering condition. onion sets that are commercially stored at near freezing temperatures to retard spoilage are thereby automatically vernalized and ready to flower as soon as they are planted. Exposure to temperatures above 26.7° C (80° F) for two to three weeks before planting, however, shifts the sets to the desired bulb-forming phase.

* * *


Universalium. 2010.

Игры ⚽ Поможем сделать НИР

Look at other dictionaries:

  • Vernalization — (vernalisation British English) is the acquisition of the competence to flower in the spring by exposure to the prolonged cold of winter. The word vernalization comes from the Latin word vernus , meaning of the spring . Many temperate plants have …   Wikipedia

  • vernalization — vernalization. См. яровизация. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • vernalization — vernalization. = jarovization (см.). (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • vernalization — (Amer.) n. acceleration of plant development by exposing seeds or bulbs to cold temperatures (also vernalisation) …   English contemporary dictionary

  • vernalization — jarovizacija statusas T sritis augalininkystė apibrėžtis Vienamečių, dvimečių žieminių ir daugiamečių augalų rutuliojimosi laidavimas, paveikus juos tam tikru periodu žemomis teigiamomis temperatūromis. atitikmenys: angl. yarovization;… …   Žemės ūkio augalų selekcijos ir sėklininkystės terminų žodynas

  • vernalization — Chilling juvenile plants for a minimum period in order to induce flowering. Some plants require veRNAlization to flower, but others have no such requirement …   Glossary of Biotechnology

  • vernalization — noun Date: 1933 the act or process of hastening the flowering and fruiting of plants by treating seeds, bulbs, or seedlings so as to induce a shortening of the vegetative period • vernalize transitive verb …   New Collegiate Dictionary

  • vernalization — noun the treatment of seeds or bulbs so as to decrease the vegetative period or to cause the plant to flower or bear fruit more quickly …   Wiktionary

  • vernalization — or vernalisation noun the cooling of seed during germination in order to accelerate flowering when it is planted. Derivatives vernalize verb …   English new terms dictionary

  • vernalization — ver·nal·i·za·tion …   English syllables

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”