Douglas-Fir Growth and Yield: Research 1909–1960
نویسندگان
چکیده
منابع مشابه
Effects of megagametophyte removal on DNA yield and early seedling growth in coastal Douglas-fir
Stratified seeds of coastal Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco var. menziesii) were germinated, sown in soil, and seed coats and megagametophytes were removed at various stages of early seedling development. Yield and quality of DNA extracted from the megagametophytes were related to several morphological traits of the seedlings after 2 months of growth in a controlled environmen...
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................................................................................................................... VII Zusammenfassung .................................................................................................. VIII
متن کاملDouglas-fir beetle
1Principal Entomologist and Project Leader (retired), Forestry Sciences Laboratory, USDA Forest Service, Moscow, ID; 2Forest Entomologist, USDA Forest Service, Forest Health Protection, Northern Region, Coeur d’Alene, ID. Douglas-fir beetle galleries are distinctive, having eggs laid individually in niches alternating on opposite sides of the gallery. The Douglas-fir beetle (Dendroctonus pseudo...
متن کاملAdaptive significance of intermittent shoot growth in Douglas-fir seedlings.
We tested the hypothesis that intermittent (lammas) shoot growth in Douglas-fir (Pseudotsuga menziesii var menziesii (Mirb.) Franco) seedlings from dry regions of southwest Oregon is adaptively significant. Seedlings from open-pollinated families (160 total) from two inland (dry) and two coastal (wet) sources were grown under either well-watered or intermittent drought conditions (temporary dro...
متن کاملDevelopmental decline in height growth in Douglas-fir.
The characteristic decline in height growth that occurs over a tree's lifespan is often called "age-related decline." But is the reduction in height growth in aging trees a function of age or of size? We grafted shoot tips across different ages and sizes of Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) trees to determine whether the decline in height growth is mediated by tree size or by t...
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ژورنال
عنوان ژورنال: Western Journal of Applied Forestry
سال: 2004
ISSN: 0885-6095,1938-3770
DOI: 10.1093/wjaf/19.1.66