Question

What is vernalization ?

• A. Growth curve in response to light
• B. Recurrence of day and night
• C. Effect of day length on plant growth
• D. Acceleration of the ability to flower by low temperature treatment

Answer 1

The correct option is D Acceleration of the ability to flower by low temperature treatment

Vernalization is acquisition of ability of plants to flower by chilling treatment. In absence of cold treatment, accumulation of ent-kaurenoic acid in shoot tip occurs. Cold treatment followed by exposure to high temperatures convert it into $G{A}_9$, which stimulates flowering response in plants. Thus, option D is correct.