To provide a method for promoting the formation of the laticifer of a laticifer-having plant, mainly a latex-producing plant such as Ficus elastica, and to provide an agent for promoting the formation of the laticifer, suitable for the method. 乳管を有する植物、主にゴムノキ等のラテックス産生植物の乳管形成を促進する方法、及び当該方法に好適な乳管形成促進剤の提供。 - 特許庁