Question

Short Answer Question:

Give its significance of vernalization.

Answer 1

1. Chouard (1960) defined vernalization as the acceleration of the ability to flower by chilling treatment.
2. The term vernalization was coined by T.D Lysenko (1928) for the effect of low temperature on flowering in plants.
3. It is an influence of temperature on development and flowering.
4. Many plants such as cereals, crucifers require a period of cold treatment for flowering.
5. It is the method of inducing early flowering in the plants by pretreatment to their seeds/ seedlings at low temperatures (1-6ºC for one to one and half months’ duration).
6. The site of vernalization is believed to shoot apical meristem.
7. Generally, vernalization is effective at the seed stage in annual plants.
8. It was suggested by Melchers (1939) that vernalization initiates a stimulus for the formation of a hormone called vernalin.
9. Significance of vernalization:
   1. Crops can be produced earlier.
   2. Crops can be cultivated in regions where they do not grow naturally.