PROBLEM TO BE SOLVED: To provide a method for producing strawberry improved in high calyx separation properties using a gene related to a character of calyx separation, and to provide a method for selecting the strawberry with high calyx separation properties using a gene or protein related to the character of calyx separation.SOLUTION: There are provided the method for producing strawberry improved in the high calyx separation properties that transforms a strawberry plant body using an DNA sequence having a promoter sequence controllable of an ethylene-related gene and expression of the ethylene-related gene in order to improve the separation properties of a calyx, and the method for selecting the strawberry with high calyx separation properties improved in the separation properties of a calyx using an expression amount of the ethylene-related gene or a cumulative amount of an ethylene-related protein synthesized based on the ethylene-related gene as an index.COPYRIGHT: (C)2013,JPO&INPIT【課題】ヘタ離れ形質関連遺伝子を使用したヘタ離れ性を高めたイチゴの作出方法、および、ヘタ離れ形質関連の遺伝子或いはタンパク質を使用した高ヘタ離れ性イチゴの選抜方法を提供する。【解決手段】ヘタの分離性を高めるべく、エチレン関連遺伝子および当該エチレン関連遺伝子の発現を制御可能なプロモーター配列を有するDNA配列を使用してイチゴの植物体を形質転換するヘタ離れ性を高めたイチゴの作出方法、および、エチレン関連遺伝子の発現量、或いは、前記エチレン関連遺伝子を基に合成されたエチレン関連タンパク質の蓄積量を指標とした、ヘタの分離性を高めた高ヘタ離れ性イチゴの選抜方法。【選択図】なし
