Effect of temperature and daylength on flower initiation and runner formation in two everbearing strawberry cultivars

Plants of the everbearing cultivars ‘Revada’ and ‘Rabunda’ were placed at constant temperatures of 14, 20 and 26°C and daylengths of 8, 16 and 24 hours, consisting of 8 hours daylight prolonged with 0, 8 or 16 hours in can descent light, light intensity 0.8 W/m² visible radiation.Flower initiation and runner formation occurred irrespective of temperature and daylength. The duration of runner formation depended on temperature and daylength and was longer at 20 and 26°C than at 14°C and longer at 16 and 24 hours than at 8 hours.The results are discussed.