Question

Identify the crop(s) requiring vernalization:
(A). Barley
(B). Sunflower
(C). Carrot
(D). Ragi
Choose the correct answer from the options given below:

• (A) only
• (A) and (C) only
• (C) and (D) only
• (B) only

Hint:

Biennial plants (like carrot, cabbage, and sugar beet) and winter annuals (like winter wheat and winter barley) are the classic groups of crops that require vernalization to flower.

Answer 1

The Correct Option is B

Step 1: Understanding the Concept:
Vernalization is the induction or acceleration of a plant's flowering process by exposure to a prolonged period of cold temperature.
This adaptation prevents plants from flowering prematurely during winter.

Step 2: Detailed Explanation:
1. Winter varieties of Barley (A) require a cold treatment (vernalization) during their early vegetative growth to initiate the transition to reproductive development.
2. Carrot (C) is a biennial crop.
It remains vegetative in its first season, experiences winter cold (which acts as the vernalization signal), and then flowers and produces seeds in the second season.
3. Sunflower (B) and Ragi (D) are warm-season crops that do not require low temperatures for flower induction.
Thus, only Barley and Carrot require vernalization.

Step 3: Final Answer:
The crops requiring vernalization are (A) and (C) only.