PROBLEM TO BE SOLVED: To provide a new compound having a flower-bud formation acceleration effect and easily synthesized, and a flower-bud formation accelerator.;SOLUTION: An α-ketol fatty acid derivative expressed by general formula (I) and a keto fatty acid derivative expressed by general formula (II) or (III), and the flower-bud formation accelerator containing them are provided.;COPYRIGHT: (C)2009,JPO&INPIT
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