Question

The duration of cold treatment in vernalisation varies from

• A. Four days to four weeks
• B. Four days to ten days
• C. Four days to three months
• D. One month to three months

Answer 1

Answer: (C)

Four days to three months

The acquisition or acceleration of the ability to flower by a chilling treatment is said to be vernalization. It is the method of inducing early flowering in plants by pretreatments of their seeds at a very low temperature. Low-temperature effects may be obtained at any stage of plant development. The most effective temperature for vernalization is between 0 to 5 degree C. The duration of cold treatment for effective vernalization varies from four days to eight weeks. Thus option C is the correct answer.