PROBLEM TO BE SOLVED: To provide a novel means for contributing to increase a frequency of gaining a flower color mutant plant and extension of range of flower color mutation by irradiating ionizing radiation.SOLUTION: In a method for creating a flower color mutant plant by irradiating ionizing radiation, the flower color mutant plant is obtained in gain frequency twice or more as much in comparison with the gain frequency of a flower color mutant plant solely irradiated by ionizing radiation by stress-treating the plant before irradiating the ionizing radiation.COPYRIGHT: (C)2011,JPO&INPIT【課題】電離放射線照射による花色変異体植物の獲得頻度増大・花色変異幅拡大に寄与する新しい手段を提供する。【解決手段】電離放射線照射によって花色変異体植物を作出する方法において、電離放射線の照射前に、植物をストレス処理することによって、電離放射線照射のみによる花色変異体植物の獲得頻度に比べ、2倍以上の頻度で花色変異体植物を獲得する。【選択図】なし
