The application discloses genes LpCbDR3 In the application of improving the salt tolerance and
forage quality of rye grass, transgenic RNAi- LpCbDR3 The crude
protein content and fat of the rye grass are significantly improved, and the ADF, NDF and Ash contents are significantly reduced. LpCbDR3 The transgenic rye grass has a significantly improved
chlorophyll content compared with the control group, which indicates that
chlorophyll is degraded under the salt stress condition, and the transgenic
plant can reduce the
chlorophyll decomposition rate. LpCbDR3 The
relative conductivity (EL) is significantly reduced, which indicates that the transgenic
plant has a low
ion permeability of
leaf cell membrane and a low damage degree of
cell membrane compared with the control group, and the harm of salt stress to the
plant is alleviated. LpCbDR3 The
forage quality and salt tolerance of perennial rye grass can be improved.