Kenneth S. Norris Rancho Marino Reserve

26 Jan, 04 PM - 03 Mar, 04 PM

This is an ongoing project begun in 1998, in which Monterey pines (Pinus radiata)on four stands within the Cambria population, one of which is the Rancho Marino stand, were tested for potential resistance/tolerance to pitch canker (Fusarium circinatum). Based on the results of the testing, a breeding plan (diallel) was developed to aid in understanding the nature and heritability of resistance/tolerance to the disease. Controlled pollination of several of the tested trees began in 2000 and is continuing until the crosses in the breeding plan are substantially completed. Three Monterey pines in the Rancho Marino stand are included in the breeding plan and are being pollinated with pollen from other trees in the breeding plan. All of the trees in the breeding plan are from the Cambria population, and the crosses could, and probably do, occur naturally. The cones that are produced from the pollinations are collected and the seeds are extracted and stored at the USDA Forest Service's Placerville Nursery in Camino, California. When the diallel is substantially complete, seedlings will be grown and inoculated with pitch canker in a greenhouse to learn more about genetic resistance to the disease. This information will be valuable in planning a strategy for maintaining Monterey pine's presence and role in the ecosystem.

Visit #2345 @Kenneth S. Norris Rancho Marino Reserve

Approved

Under Project # 1872 | Research

USDA Forest Service - Central Zone Genetic Resourse Program

other - US Forest Service

Reservation Members(s)

Dennis Ringnes Jan 26 - Mar 3, 2004 (38 days)

Reserve Resources(s) | Create Invoice

Day Use Only 1 Jan 26 - Mar 3, 2004