Question

Hybrid rose seeds respond best to a stratification temperature of ____________ °C for 69 to 90 days.

• A. 14 °C
• B. 5–8 °C
• C. 8–12 °C
• D. 13–16 °C

Hint:

Proper stratification temperature and duration are crucial for breaking seed dormancy and ensuring healthy seed germination.

Answer 1

The Correct Option is A

Stratification is a pre-germination treatment involving cold temperature exposure to break seed dormancy. Hybrid rose seeds respond best when stratified at around 14 °C for 69 to 90 days, which helps improve germination rates.
(A) 14 °C – Correct. Ideal stratification temperature for hybrid rose seeds.
(B) 5–8 °C – Too low for optimal rose seed stratification.
(C) 8–12 °C – Slightly lower than optimal.
(D) 13–16 °C – Close, but 14 °C is more precise.