PROBLEM TO BE SOLVED: To provide methods of creating industrially useful Laminariales brown algae.SOLUTION: A method of creating a mutant of Laminariales brown algae is characterized by comprising irradiating a gametophyte or a sporophyte with a full length of 50 mm or less, of Laminariales brown algae, with a heavy ion beam culturing and breeding the gametophyte or sporophyte after irradiation to obtain a second generation gametophyte culturing and breeding the sporophyte obtained from the second generation gametophyte and selecting an individual with a full length of two times or more of a lineage that has not been irradiated with a heavy ion beam.SELECTED DRAWING: NoneCOPYRIGHT: (C)2017,JPO&INPIT【課題】産業上有用なコンブ目褐藻類を作出する方法の提供。【解決手段】 コンブ目褐藻類の配偶体または全長50mm以下の胞子体に、重イオンビームを照射し、 照射後の配偶体または胞子体を培養・養殖して第2世代配偶体を得、 第2世代配偶体から得られた胞子体を培養・養殖し、 重イオンビーム無照射系統の2倍以上の全長を有する個体を選抜することを特徴とする、コンブ目褐藻類の変異体作出方法。【選択図】なし
