PROBLEM TO BE SOLVED: To inhibit the seeds of fruit such as citrus against contamination, thus preventing the fruit from the decline in commodity value.SOLUTION: A germination inhibitor for pollen is provided, with a water-soluble formate as an active ingredient. A method for inhibiting the germination of pollen is also provided, including spreading an aqueous formate solution over fruit trees flowers.COPYRIGHT: (C)2010,JPO&INPIT【課題】カンキツ等の果実の種子混入を抑止し、商品性の低下を防ぐこと。【解決手段】ギ酸塩の水溶液を果樹の花に散布する。【選択図】なし