Question

Most appropriate temperature for vernalization ranges between
a.0°C to -4°C
b.5°C to -7°C
c.5°C to 10°C
d.0°C to 5°C

Answer 1

0°-4°C , it is experimentally observed

Answer 2

Answer:

Option d. 0°C to 5°C

Explanation:

• Vernalization refers to the process of cold temperature treatment to induce early flowering.

• It is the effective low temperature i.e- 0°C to 5°C treatment to hydrated seeds or young plants to shorten their vegetative phase and initiate the reproductive phase to induce early flowering.
• The stimulus of low temperature is perceived by the active embryo tip, shoot tip, and other meristematic areas.
• The dry seeds don't respond to vernalization.

• The process of vernalization can be stated as:

Low-temperature → thermo-induced condition → Vernalin → Florigen → Flowering

• The most appropriate temperature for vernalization ranges from 0°C to 5°C.

Hence option (d) is correct.