Managing genetic diversity in a tree improvement program

Maintenance of species and within-species diversity is a goal of the USDA Forest Service, Pacific Southwest Region, which is examining and monitoring the genetic effects of silvicultural activities using isozyme analysis in conjunction with traditional methods. An effective monitoring and evaluation...

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Bibliographic Details
Published in:Forest ecology and management 1990-06, Vol.35 (1-2), p.131-149
Main Author: Kitzmiller, Jay.H.
Format: Article
Language:English
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Summary:Maintenance of species and within-species diversity is a goal of the USDA Forest Service, Pacific Southwest Region, which is examining and monitoring the genetic effects of silvicultural activities using isozyme analysis in conjunction with traditional methods. An effective monitoring and evaluation program will help improve silvicultural practices. Regional policies on gene conservation focus mainly on artificial regeneration. Tree improvement, nursery, and reforestation activities in the PSW Region may significantly affect adaptability, genetic diversity, and economic timber traits. The Base-Level Tree Improvement Program (TIP) aims for: (1) high adaptability via use of native species and local wild seed; (2) high within-species genetic diversity via designs for sampling several local seed-stands and via long-term plans for improvement using simple recurrent selection and bulking among the see-production-area plantations; and (3) moderate improvement in performance via mild selection for superior phenotypes.
ISSN:0378-1127
DOI:10.1016/0378-1127(90)90237-6