Evaluation of <i>Phytophthora ramorum</i> in Nursery Crop Tissue Culture Propagation

Fig. 3. Appearance of Phytophthora ramorum colonies initiated from sporangia and grown for 21 days in Petri dishes on tissue culture rooting media (A and B) or multiplication media (C and D). A and C were inoculated with isolate N10, and B and C with isolate D12A.



Image from Plant Health Progress article:
Evaluation of Phytophthora ramorum in Nursery Crop Tissue Culture Propagation