Raised beds for testing disease resistance of Port-Orford-cedar seedlings at the Dorena Genetic Resource Center
Photo Gallery
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Port Orford cedar seedlings  |
Phytophthora taxon Agathis bole canker  Kauri tree in New Zealand with disease symptoms |
P. nicotianae hyphal swelling  P. nicotianae hyphal swellings in water 100x. Photo from Q-bank: www.q-bank.eu, Henk Brouwer (CBS-KNAW, Utrecht, The Netherlands) |
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P. arenaria oogonium  Aplerotic oogonia of P. arenaria with paragynous antheridia. Scale bar = 20 μm |
P. agathidicia sporangia  Differentiation of the cytoplasm within papillate sporangia into acid fuchsin stained zoospores |
Phytophthora chlamydospora sporangium  Phytophthora chlamydospora sporangia in water, showing internal proliferation. Bar is 20 µm. |
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P. boehmeriae symptoms  Symptoms of gummosis on black wattle (Acacia mearnsii) |
P. boehmeriae oogonia  Oogonia and oospores with amphigynous antheridia |
P. pseudotsugae colony morphology on PDA  P. pseudotsugae colony growth on PDA agar |
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P. pinifolia colony morphology on V8  Colony pattern after 7 days on V8 at 24C, photo from Q-bank, used with permission |
P. siskiyouensis canker on Italian alder  Bole lesions in the tissues under the bark of a bleeding canker: distinct margin between healthy and disease tissues |
P. cambivora symptoms  Dead beech in Germany |