Composition for improving environmental stress tolerance of plant and method for improving environmental stress tolerance of plant

摘要

Provided is a composition for improving environmental stress tolerance of a plant, which has a clear active ingredient and can be applied to a plant that requires safety such as an edible plant and can provide a stable effect. The composition for improving environmental stress tolerance of plants contains at least one of sanguinarine represented by the following formula (I): ## STR1 ## or a salt thereof as an active ingredient.