[Objective]A major drawback in the characterization of barley genes supporting or restricting root colonization by mutualistic or pathogenic fungi is the lack of a highly flexible and fast barley root transformation system. Such a transformation system has been established for solving the above problem. [Methods]The immature embryo was isolated under the microscopy. The scutellum was transformed with the Green Fluorescent Protein( GFP),BAX inhibitor( BI-1),Hv EXPANSINB1-RNAi and GFP-ER genes via Agrobacteri...