<i>Phytophthora hibernalis</i>: A New Pathogen on <i>Rhododendron</i> and Evidence of Cross Amplification with Two PCR Detection Assays for <i>Phytophthora ramorum</i>

Fig. 2. Sporangia and zoospores of Phytophthora hibernalis from cultures grown on dilute V8 medium and then incubated in soil water for 2 to 3 days at 18°C with a 16-h light cycle (4).



Image from Plant Health Progress article:
Phytophthora hibernalis: A New Pathogen on Rhododendron and Evidence of Cross Amplification with Two PCR Detection Assays for Phytophthora ramorum