| photoperiodism |
The effect of day and night length on plant flowering. Some plants are long day, requiring14 - 16 hours of sunlight per day to flower. Others are short day requiring only 8 - 9 hours. Others are day neutral and unaffected by day length. Photoperiosim also effects the breeding cycles of farm livestock
출처: www.ecifm.reading.ac.uk/glossary.htm
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