HORTICULTURE

Detailed explanation-1: -Photoperiodism is the response to changes in daylength that enables plants to adapt to seasonal changes in their environment. The best studied example of photoperiodism in plants is flowering, but other responses to daylength include bud dormancy and bulb or tuber initiation.

Detailed explanation-2: -They are classified under three groups according to the photoperiods: short-day plants, long-day plants, and day-neutral plants.

Detailed explanation-3: -They are: Long Day Plants: They require the periodic exposure of light exceeding the critical period to induce flowering. Short Day Plants: They require the periodic exposure of light less than the critical period to induce flowering. Day-neutral Plants: The flowering in many plants does not depend on the photoperiod.

Detailed explanation-4: -In many plants, photoperiodism is controlled by the overlap between the day length cue and the plant’s internal circadian rhythms.