Question

Most commonly used chemicals to break dormancy in seeds requiring light (Ex. Oats, Lettuce, Gladiolus etc.) are:
(A). Potassium nitrate
(B). Kinetin
(C). Thiourea
(D). NAA
Choose the correct answer from the options given below:

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

Hint:

In seed testing laboratories (ISTA guidelines), a $0.2\%$ solution of Potassium Nitrate ($\text{KNO}_3$) is the standard chemical treatment used to break dormancy in a wide range of agricultural seeds.

Answer 1

The Correct Option is D