Fig. 1. Effects of incubation time and incubation temperature on lesion development of ‘Hongyang’ cane pieces inoculated with a suspension of Pseuodmonas syringae pv. actinidiae. (A) Disease development progress of 1-5 weeks post-inoculation; (B) Effects of incubation temperature on lesion development 5 weeks post-inoculation.
Fig. 2. Responses of representative genotypes of different resistant status after inoculation with Pseudomonas syringae pv. actinidiae for 6 weeks. (A) Callus formation and buds sprouting on canes of resistant/tolerant genotype; (B) Dark-brown color on the cane with Psa ooze spilled in highly susceptible genotype; (C) Zero visible lesion symptom on high resistance genotype; (D) Lesion extended only into the outer epidermis and cortex tissues around the wound point for the resistant or moderate genotype; (E) Lesion partly extended into xylem only inside the wound side of susceptible genotype; (F) Lesion completely extended into the entire xylem and eventually the whole cane of highly susceptible genotype turned brown.
Fig. 3. Disease symptoms resulting from the inoculation with a suspension of Pseudomonas syringae pv. actinidiae of cane pieces of 18 genotypes with different levels of resistance. HR, highly resistant; R, resistant; M, moderate; T, tolerant; S, susceptible; HS, highly susceptible; Control is ‘Hongyang’ without the inoculation with Pseudomonas syringae pv. actinidiae.
Table 1. Actinidia genotypes used in the assay and their response to Pseudomonas syringae pv. actinidiae (Psa) under field condition
Table 2. Disease symptoms of in vitro canes of different Actinida genotypes response to Pseudomonas syringae pv. actinidiae (Psa)
Table 3. The correlation analysis of lesion length of Actinida genotypes from 2015 to 2016
Table 4. Main disease symptoms used to classify Actinidia susceptibility to Pseudomonas syringae pv. actinidiae (Psa)
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