EsSPL6 gene as well as function verification method and application thereof

The invention discloses an EsSPL6 gene capable of improving drought resistance of siberian wildrye. The EsSPL6 gene has the function of positively regulating the drought resistance of plants, and provides a scientific basis and a new material for the research directions of breeding of excellent varieties of drought-resistant siberian wildrye, understanding of a drought-resistant mechanism of the plants and the like; besides, the invention provides a functional verification method of the EsSPL6 gene, which is used for performing functional verification by using transgenic arabidopsis thaliana starting from an internal regulation mechanism of drought stress of siberian wildrye, has obvious research depth and breadth and technical effects, and can obtain a plant strain with an intentional phenotype; a variety of indexes for evaluating the drought stress degree are adopted, a good evaluation effect is achieved, the indexes are mutually verified, a scientific evaluation system is constructed, the function of the E