Results 221 to 230 of about 4,105 (258)

Ontogenetic variations in the composition of peach leaf wax

Phytochemistry, 1979
Abstract The composition of the epicuticular waxes from the adaxial and abaxial surfaces of peach leaves varies considerably during one season's growth. Triterpenoid acids are major components 84–95% of the waxes from the youngest leaves but the proportions of these constituents decrease as the leaves expand.
Edward A. Baker, Martin J. Bukovac, James A. Flore   +2 more
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Patterns of variation and development in leaf wax alkanes

Phytochemistry, 1969
Abstract When n-alkanes form only a small percentage of the leaf cuticular wax, the dominance of odd over even carbon number chain length tends to disappear. Similarly the alkanes from lipids extracted from within the leaf, as opposed to cuticular alkanes, lack this alternation in chain length.
G.A. Herbin, P.A. Robins
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The effects of superficial wax on leaf wettability

Annals of Applied Biology, 1969
SUMMARYExperiments are described which provide more information on the role played by superficial waxes in the natural water‐repellency of leaf surfaces. Contact angles of water were measured on a variety of leaf surfaces, before and after removal of wax, and on smooth films of the isolated superficial waxes.
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The ultrastructure of wax deposits on plant leaf surfaces

Journal of Ultrastructure Research, 1963
The surface wax on white clover leaves has been studied with the electron microscope. Replicas of leaf surfaces showing the growth of wax and the effects of weathering have been examined at magnifications up to 200,000 diameters.
D.M. Hall, L.A. Donaldson
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Diesters of diols in wheat leaf wax

Lipids, 1971
AbstractDiesters have been isolated from the leaf wax of spring wheat,Triticum aestivum, L. (Selkirk variety) by chromatography. The diesters, which form 3% of the wax and which were shown by gas liquid chromatography to be a mixture of C51−C60 esters, consist largely oftrans 2‐docosenoic andtrans 2‐tetracosenoic acid esters of 1,9‐nonanediol, 1,10 ...
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Leaf wax of Lactuca sativa and Plantago major

Phytochemistry, 1998
Abstract Wax layers of plants are able to accumulate semivolatile organic compounds (SOCs) from the atmosphere. In this study, the composition of the leaf cuticular waxes of lettuce ( Lactuca sativa ) and common plantain ( Plantago major ) was determined for future studies on the role of cuticular waxes in the uptake and bioaccumulation of SOCs.
Martine I. Bakker, Wim J. Baas, Dick T.H.M. Sijm, Chris Kollöffel   +3 more
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Hydrocarbons in leaf waxes of Saccharum and related genera

Phytochemistry, 1978
Abstract The composition of the n -alkanes in the leaf waxes of over 80 clones of Saccharum officinarum, S. edule, S. robustum, S. spontaneum and from a number of related species have been compared by GLC. The waxes contain predominantly odd alkanes, C 27 –C 35 , the major components being C 29 and C 31 . In a number of clones, particularly of S.
Roger M. Smith, Michael Martin-Smith
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Leaf wax constituents of some myrtaceous species

Phytochemistry, 1983
Abstract Eucalyptin and 8-desmethyleucalyptin have been isolated from the leaf wax coatings of several species of Eucalyptus, from Syncarpia glomulifera, Lophostemon confertus and an Angophora hybrid indicating that C-methylated flavones may be fairly distinctive of the family Myrtaceae.
John L. Courtney, Erich V. Lassak, Graeme B. Speirs   +2 more
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Leaf epicuticular waxes in the taxonomy of the Epacridaceae

1989
Leaf epicuticular waxes have been studied in the plant family Epacridaceae from a primarily taxonomic aspect. Both the form of the wax and its chemical composition have been analysed. Wax morphology in approximately 95% of the known species from 30 of the 31 recorded genera has been examined by scanning electron microscopy (SEM).
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C-Methyl-flavonoids from the leaf waxes of some Myrtaceae

Phytochemistry, 2000
The thin waxy coatings on leaves of nine species of Callistemon, two of Melaleuca and one species of Metrosideros, have been studied for the occurrence of leaf surface flavonoids. The Callistemon species and Metrosideros robusta exhibit only C-methylated flavonoids, while O-methyl flavonoids were detected in Melaleuca huegelii. The new natural C-methyl
Wollenweber, E., Whede, R., Dorr, M., Lang, G., Stevens, J.F.   +4 more
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