This question is incomplete, however, I can answer it based on the information given and my previous knowledge
In each of the scenarios, the flowering of the rice plants was different based on the number of hours of light and darkness. But this one needs at least 12 hours of uninterrupted darkness
A Short-day plant is a term to refer to a type of plant that is characterized by blooming when the duration of the night is longer.
A Short-day plant cannot flower with long days or if the plant is exposed to artificial light for several minutes in the middle of the night. These plants generally require an uninterrupted period of darkness before flower development can begin.
For example, the rice plant requires at least 12 hours of continuous darkness to flower. So any situation in which the rice plant receives a flash of light (natural or artificial) during the night will alter its flowering and it will not flower.
On the contrary, if it has at least 12 hours of darkness, it will bloom in a good way without any setbacks.
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