vernalization


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vernalization

a process in which young plants are treated with low temperatures (2–5 °C) to induce a change to an older physiological state, thus shortening the interval between sowing and flowering. Vernalization can be reversed by high temperatures.
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f(T), f(P) and f(V)--response functions for temperature, photoperiod and vernalization, respectively, which vary from 0 to 1.
Three distinct PRC2-like complexes have been identified and characterized ha Arabidopsis, named EMBRYONIC FLOWER (EMF), VERNALIZATION (VRN), and FERTILIZATION INDEPENDENT SEED (FIS).
Thus, seed that requires "after-ripening" or cold vernalization (a period of exposure to cool temperature) is saved by its inability to grow until next spring.
However, a few chapters examine epigenetics studies in other organisms, including the vernalization of seeds in some flowering plants, the effects of royal jelly in honeybees, and the aging of yeast.
The decline becomes prominent in the cultivars requiring more vernalization period under normal planting.
The process is known as vernalization, whereby a plant becomes competent to flower after a period of cold.
Answering these kinds of basic questions could lead to crop improvements and will be important to grasp as climate changes alter the length of the winter season, with possible repercussions to vernalization in plants around the world.
Vernalization is a photoperiod response during the winter that is important for triggering flowering in the spring.
bolting electromagnetic spectrum etiolation frost-sensitive frost-tender frost-tolerant growing degree days lake effect macroclimate microclimate photon phototropism phytochrome vernalization
Vernalization and photoperiodism: A symposium, Waltham, Mass: Chronica Botanica, 1948
RFLP mapping of the vernalization (Vrn1) and frost resistance (Fr1) genes on chromosome 5A of wheat.
This vernalization, or chilling preparation, mimics the climate in Holland.