How to quantify differences in epicuticular wax morphology of Picea abies (L.) Karst. needles
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چکیده
منابع مشابه
Umbelliferone in Needles of Picea abies *
Umbelliferone, Quantitative Estimation, Picea abies, Genetic Families A compound showing blue fluorescence under UV-light was isolated from spruce needles and identified as umbelliferone. Structure analysis was based on UV and mass spectroscopy as well as chromatographic comparison with authentic material. Quantitative evaluation by direct measure ment of the fluorescence of the umbelliferone ...
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Mountain ecosystems represent nearly one fourth of the Earth's land surface, and provide (ecosystem) services to a significant part of the world’s human population. As was noted in the 1992 United Nations Conference on Environment and Development (UNCED) in Rio de Janeiro (Agenda 21), these ecosystems are experiencing rapid degradation due to environmental and human impact at the local scale ha...
متن کاملAn acetylated galactoglucomannan from Picea abies L. Karst.
A water-soluble galactoglucomannan composed of D-galactose, D-glucose, and D-mannose in 1:3:17 mole proportion has been isolated from the secondary cell walls of Picea abies L. Karst. About 33% of the polysaccharide units were substituted by acetyl groups. Structural studies of the polymer indicated a beta-(1-->4)-linked glucomannopyranosyl backbone with a low content of branch points at O-6 of...
متن کاملRecovery of photosynthesis in 1-year-old needles of unfertilized and fertilized Norway spruce (Picea abies (L.) Karst.) during spring.
Photosynthetic O(2) evolution and chlorophyll a fluorescence were measured in 1-year-old needles of unfertilized and fertilized trees of Norway spruce (Picea abies (L.) Karst.) during recovery of photosynthesis from winter inhibition in northern Sweden. Measurements were made under laboratory conditions at 20 degrees C. In general, the CO(2)-saturated rate of O(2) evolution was higher in needle...
متن کاملPeroxidase activity, soluble proteins and chlorophyll content in spruce (.Picea abies L. Karst.) needles affected by cement dust
The correlation between the peroxidase activity, chlorophyll and soluble protein content as well as the changes in vascular bundle structure in Norway spruce (Picea abies L. Karst.) needles affected by cement dust were studied. In spite of the absence of any yellowing symptoms, a significantly lower chlorophyll con tent was measured in spruce needles affected by cement dust. Observed sieve cel...
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ژورنال
عنوان ژورنال: New Phytologist
سال: 1993
ISSN: 0028-646X,1469-8137
DOI: 10.1111/j.1469-8137.1993.tb03790.x