Which one of the following is correct for blooming of 'short day' plants?
The long dark period is not critical
It is affected by interruption of long dark period by brief exposure of light
It is not affected by interruption of long dark period by brief exposure of light
It is affected if the continuous light period is interrupted
B.
It is affected by interruption of long dark period by brief exposure of light
Short day plants flower when exposed to day lengths shorter than a certain critical duration. Interruption by dark during long light period does not stimulate flowering. It means they do not flower if dark period is interrupted by a flash of light. They are also called long night plants. Whereas interruption by dark during long light period does not inhibit flowering in long-day plants (short-night plants).
