In short plants (SDP) flowering is induced by

Options

A. Long night
B. Photoperiod less than 12 hours
C. Photoperiod shorter than initial value and uninterrupted long night
D. Short photoperiod and interrupted long night

Answer

C

Explanation

In short day plants flowering occurs when they are exposed to a photoperiod shorter than a critical period e.g. Soybean, Tobacco etc. These plants require a relatively short daylight period and a continuous dark period of about 14-16 hours for subsequent flowering.