释义 |
short-day short-day (shôrt′dā′)adj. Of, relating to, or being a plant that flowers only when the duration of daylight is less than a certain amount, as in early spring or fall.short-day adj (Botany) (of plants) able to flower only if exposed to short periods of daylight (less than 12 hours), each followed by a long dark period. Compare long-day |