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

Fig. 2. Isolation of Phytophthora ramorum from tissue cultured shoots of rhododendron ‘Nova Zembla’ (A) or roots of birch (B) on PARP selective medium. Isolations from shoots of rhododendron were from bottom, middle, and top sections (bottom to top of photo) after surface sterilization in either 0.05% (N10A) or 0.10% (D12A) bleach solution for 2 min. Roots of birch for isolations were also surface sterilized. Pathogens grew from internal tissue.



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