Measuring method for identifying heat resistance of germplasm of Rosa hybrid by means of detached leaves

The invention belongs to the technical field of flower breeding and culture, and particularly relates to a measuring method for identifying heat resistance of germplasm of Rosa hybrid by means of detached leaves. The method mainly comprises culture of Rosa hybrid plants, selection and high-temperature treatment of the detached leaves of the Rosa hybrid, chlorophyll fluorescence kinetic parameter Fv/Fm value measurement of the detached leaves of the Rosa hybrid, the application of the heat damage grading standard of the detached leaves and the like. The method is characterized in that through treatment at the specific high temperature for a certain period of time, chlorophyll fluorescence kinetic parameter Fv/Fm values of the detached leaves are obviously different for different heat-resistant Rosa hybrid germplasm, and heat-resistant germplasm and heat-sensitive germplasm parameters of the Rosa hybrid can be identified. The method is easy and quick to operate, the heat resistance of germplasm resources of the