Fig. 1

Shoot length increments (cm*week¹) in the Okanese (circle) and Walker (triangle) cultivars under SD conditions (12/12 h, light/dark period) at 18/3 °C temperature during the first 30 days, then 10/14 h for an additional 30 days. Error bars represent the ±SEM.N = 27. The values indicated by different letters are significantly different atP < 0.05 level from each other