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Difference in the endodormancy status of two Japanese apricot cultivars. Endodormancy in cv Ellching (left) was released with a relatively short period of cold exposure, while cv Nanko (right) remained endodormant. Each plant was transferred to forcing conditions (greenhouse controlled at 25°C ± 3°C under natural daylength) after 32 d of cold exposure (7°C ± 2°C). Only cv Ellching resumed growth and produced new leaves. [See online article for color version of this figure.]
