The present invention discloses a method for attaining potato plates which are
disease resistant by utilizing
agrobacterium-mediated hrap
gene. After the combined
inoculation of the method and the
bacteria allergic
protein harpinPss, the
allergic reaction caused by harpinPss can be promoted in the
intercellular space of all inoculated plates, and the polymeride of harpinPss is dissociated, so the
disease resisting effect is better, and the
disease resistance of the potato plates can be promoted. The hrap
gene is introduced in the potato plates through the
agrobacterium-mediated, thus resulting that the potato plates have the ability to
resist the late
blight and the
bacterial wilt. The present invention has the technical proposal that the pre-cultured explants are inoculated in the
agrobacterium germ liquid to be soaked, explants after being soaked select the tube
seedling which can root after two times of root selections by co-culturing,
callus of induce,
bud inducting and rootage cultivating and selecting, and the potted transformed plants are transferred after the
mass propagation, the transformed plants select positive plants by the methods of the PCR detection and the Southern hybridization detection, and then the potato plates which are
disease resistant can be obtained by the in-vivo
inoculation resistance identification. The present invention improves the
callus of inducing and the
bud inducing of the explants, and enhances the agrobacterium-mediated ability. That the roots of the explants are selected by two times can eliminate the false positive plates in the transformation process , avoid the continuing cultivation to the false positive plates, save the labour force and decrease the manufacturing cost.