The present invention relates to a technique for accelerating generation advancement of sugar beets that can be used for cultivation aimed at raw material production. The present invention provides a method for selecting sugar beets comprising cultivating sugar beet strains having a chilling requirement under light conditions with a continuous dark period of 6 hours or less per day (preferably, whole-day lighting conditions) without vernalization treatment and selecting a sugar beet strain induced to flower； and a method for breeding sugar beets using the strain selected by the method.
