Disclosed are: a gene transfer method which can achieve the transformation of a plant belonging to the genus Triticum with higher efficiency compared to the conventional Agrobacterium methods; and a method for producing a transgenic plant. The methods are characterized by comprising a step of culturing a plant tissue into which an Agrobacterium bacterium has been inoculated in a co-culture medium and subsequently removing at least one part selected from a radicle, a budlet and a hypocotyl from the cultured tissue.
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