منابع مشابه
Douglas-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 کاملManaging the Dry Douglas-fir Forests
Uneven-aged interior Douglas-fir stand structure and dynamics are complexas a result of irregular fire history, insect and disease outbreaks, and variousforms of partial harvesting and range use. Stocking, crown closure, canopylayering, size-age relationships, and spatial distribution are highly variablefrom one stand to another and within any one stand. Many different factors<l...
متن کاملRate of Respiration of Douglas-Fir Seedlings
The rate of photorespiration of Douglas-fir seedlings was measured under different light intensities by: (1) extrapolating the curve for CO., uptake in reilation to atmospheric CO, content to zero CO2, content, and (2) measuring CO, evolution of the plants into a CO2-free airstream. Different results, obtained from these techniques, were lelieved to be caused by 'a severe restriction of the pho...
متن کاملFluorescence microscopy of Douglas fir foliage epiflora.
BERNSTEIN, M. E. H. M. HOWARD. and G. C. CARROLL. 1973. Fluorescence microscopy of Douglas fir foliage epifloia. Can. J. Microbiol. 19: 1129-1130. Douglas fir needles stained with the fluorescent dye, primulin, were observed microscopically using epiillumination with a mercury arc light source. Microorganisms fell into three categories: algae, which exhibited primary fluorescence; actinomycetes...
متن کاملRAPD Genome Maps of Douglas-Fir
We present linkage maps and estimate genome length for two hybrid individuals of Douglas-fir [Pseudotsuga menziesii (Mirb.) Franco], a coniferous tree species of wide distribution in the western United States. The hybrids were produced by crosses between the coastal (var. menziesii) and interior (var. glauca) varieties. Haploid megagametophytes from 80 seeds of each individual were analyzed usi...
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ژورنال
عنوان ژورنال: Journal of the American Chemical Society
سال: 1913
ISSN: 0002-7863,1520-5126
DOI: 10.1021/ja02201a012