Technology has been developed at Dorena for containerized seed orchards for Port-Orford-cedar to produce seed quickly to meet urgent regional seed needs. It is possible to produce moderate quantities of seed from three or four year old trees, which will allow for rapid dispersement of resistant Port-Orford-cedar seedlings to the field. Orchards can be updated yearly.
Despite the relative newness of the resistance breeding program, we are cautiously optimistic. Port-Orford-cedar appears to have many advantages that lend themselves to a successful breeding program for resistance to Phytophthora lateralis. Current greenhouse tests show that seedling families can differ from 0% to 100% in survival. Field plantings will be followed to examine durability of resistance. Continued efforts of the resistance program should increase the level and type of resistance and produce seed for additional breeding zones.
A conservation orchard is being established at BLM's Tyrrell Seed Orchard to preserve a diverse array of Port-Orford-cedar parent trees.
Information on efforts to evaluate and develop resistance are being disseminated to scientific and public audiences through presentations and poster sessions at conferences and symposia.
A conservation strategy for Port-Orford-cedar is currently being developed. The
strategy will strive to ensure the ecological and economic viability of the
For further information,
contact: Richard Sniezko (email@example.com)
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