Lignans of western red cedar (Thuja plicata Donn). VI. Dihydroxythujaplicatin methyl ether
نویسندگان
چکیده
منابع مشابه
Leaf longevity of western red cedar (Thuja plicata) increases with depth in the canopy.
Leaf longevity determines the annual cost of replacing foliage biomass and influences water and nutrient budgets. Longevity is readily estimated in most evergreen species by annual bud scars along the shoot. However, some species with indeterminate growth do not show these annual markers, making estimation of longevity difficult. One of these species is the widespread and economically valuable ...
متن کاملOccupational asthma and rhinitis due to Western red cedar (Thuja plicata), with special reference to bronchial reactivity.
Gandevia, B., and Milne, J. (1970). Brit. J. industr. Med., 27, 235-244. Occupational asthma and rhinitis due to Western red cedar (Thuja plicata), with special reference to bronchial reactivity. With the increasing use of Western, or Canadian, red cedar (Thuja plicata) in the timber industry, a distinctive respiratory syndrome of rhinitis and asthma has been observed with increasing frequency ...
متن کاملStand development following precommercial thinning and fertilization treatments in a western redcedar (Thuja plicata) dominated forest
Western redcedar (Thuja plicata Donn ex D. Don.) is an important North American tree species, but little information is available on its long-term responses to silvicultural treatments. Stand responses (mortality, ingrowth, basal area and volume growth, and distributions of trees by diameter and height classes) were followed for 25 years after thinning and fertilization treatments (alone and in...
متن کاملSomatic mutations at microsatellite loci in western Redcedar (Thuja plicata: Cupressaceae).
A per-generation somatic mutation rate for microsatellites was estimated in western redcedar (Thuja plicata, Donn ex D. Don.: Cupressaceae). A total of 80 trees representative of the average size and age of reproductive trees were sampled in four natural populations in southwestern British Columbia. Samples of bulked haploid megagametophytes were collected from two or three positions on each tr...
متن کاملResponse factor considerations for the quantitative analysis of western redcedar (Thuja plicata) foliar monoterpenes.
A method is described for quantitative analysis of monoterpenes in western redcedar (Thuja plicata) foliage by gas chromatography with flame ionization detection. Response factors for monoterpenes identified in redcedar are evaluated to determine similarities among monoterpene responses. Evaluation demonstrates that redcedar monoterpenes yield detector responses that fall into two groups. One m...
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ژورنال
عنوان ژورنال: Canadian Journal of Chemistry
سال: 1967
ISSN: 0008-4042,1480-3291
DOI: 10.1139/v67-054