FIG 1.

Disease occurrence on the peach tree root collars and twigs of resistant cultivar “Honggengansutao” and susceptible cultivar “Okinawa” 60 days after inoculation with A. tumefaciens. Symptomatic development on peach root collars (A) and twigs (B). Disease indices of peach tree root collars (C) and twigs (D). Statistical comparisons between groups were conducted by Student’s t tests. *, P ≤ 0.05; **, P ≤ 0.01; ***, P ≤ 0.001; M, mock; I, inoculated with A. tumefaciens; H, “Honggengansutao”; O, “Okinawa.”