PROBLEM TO BE SOLVED: To provide a process for efficiently producing a vegetable oil and fat from a structural material of a plant other than the seeds, while allowing the plant to photosynthesize continuously.SOLUTION: The process for producing a vegetable oil and fat is characterized by: cultivating a plant constituted of sufficiently grown structural materials, while keeping the plant short of phosphorus, or cultivating a phosphorus-deficient mutant plant and recovering neutral lipids which have accumulated in a structural material other than the seeds.COPYRIGHT: (C)2012,JPO&INPIT【課題】植物体の光合成を継続させながら、種子以外の植物組織から植物油脂を効率的製造する方法の提供。【解決手段】組織が十分に生育した植物体をリンが欠乏した状態で栽培するか、又はリンが欠乏状態となった変異植物体を栽培し、種子以外の組織に蓄積した中性脂質を回収することを特徴とする植物油脂の製造方法。【選択図】なし