Abstract

Runner plants of “Nyoho”strawberry plants were exposed to different light intervals during storage ; i. e., day/night cycles of 8/16 h, 8/16 h for 3 d followed by 0/24 h, 8/40 h, 8/88 h, and continuous darkness, and the effects on flower-bud formation, leaf growth, and chlorophyll and carbohydrate concentrations were investigated. Succulent elongation of petioles, decreased leaf area and etiolation of leaflets improved as light intervals were shortened. Although carbohydrate concentrations and percentage of flower-bud formation in continuous darkness were lower than in plants with 8/16 h, these values did not decrease even when the dark intervals became prolonged to 8/40 h.

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