Raised beds for testing disease resistance of Port-Orford-cedar seedlings at the Dorena Genetic Resource Center
Photo Gallery
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This site is no longer being developed and will be retired on September 1, 2026. Please contact us if you have any questions or would like to provide support to continue the project.
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Port Orford cedar seedlings |
Boot wash to station to control spread of P. agathidicida Use of hypochlorite solution applied through a “livestock drench-gun”, integrated with a soil grate to allow potentially contaminated soil to be collected |
P. cactorum sporangia Broadly ovoid, papillate sporangia in water. |
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P. tentaculata oogonia and antheridia Oospores and oogonia with mostly paragynous but some amphigynous antheridia of P. tentaculata |
P. pluvialis symptoms on Douglas-fir Red needle cast symptoms on Douglas-fir in western Oregon, 2015 |
P. cambivora disease symptoms Ink disease impact in sweet chestnut forest in Italy |
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P. pluvialis on Pinus radiata in New Zealand A Pinus radiata needle showing faded olive- or khaki- coloured lesions consistent with the presence of red needle cast disease. Arrow shows resinous bands within the extended olive lesion. |
P. agathidicia disease symptoms on kauri Crown decline of mature kauri, with branchlets with little or no leaves |
P. frigida symptoms 3 Black wattle bark with symptoms of gummosis |
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P. chlamydospora colony morphology on carrot agar P. chlamydospora colony morphology on carrot agar |
P. pluvialis symptoms on Douglas-fir Red needle cast symptoms on Douglas-fir in western Oregon, 2015 |
Growth of P. arenaria on half-strength PDA Colony morphology of Phytophthora arenaria after 7 days at 20°C on half-strength PDA |


