Results 261 to 270 of about 592,084 (300)

Leaf epicuticular waxes.

Science (New York, N.Y.), 1969
The external surface of the higher plants comprises a cuticular layer covered by a waxy deposit. This deposit is believed to play a major part in such phenomena as the water balance of plants and the behavior of agricultural sprays. The wax contains a wide range of organic compounds.
G, Eglinton, R J, Hamilton
openaire   +1 more source

Dependence of the hydrocarbon constituents of the leaf waxes of Khaya species on leaf age

Phytochemistry, 1980
Abstract The hydrocarbon constituents of the leaf waxes of eight species of Khaya were analysed for taxonomic purposes using GLC. The leaf waxes contained neither isoalkanes nor alkanes and the bulk of the n-alkanes were in the range of C25 to C33, odd-carbon number compounds predominating. It was found that the percentage composition of the n-alkane
O.O.P. Faboya, J.I. Okogun, D.R. Goddard
openaire   +1 more source

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
openaire   +1 more source

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.
openaire   +1 more source

Composition of leaf epicuticular waxes of Pteridium subspecies

Phytochemistry, 1987
Abstract The leaf epicuticular waxes of two subspecies of Pteridium consisted principally of alkyl esters (92 %; C 40 –C 50 ) together with small amounts of n -alkanols (2 %; C 24 –C 32 ) and hydrocarbons (2%; C 27 –C 31 ). The esters comprised C 22 –C 32 alkanols randomly combined with C 20 – C 24 fatty acids.
Edward A. Baker, Robyn E. Gaskin
openaire   +1 more source

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
openaire   +1 more source

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
openaire   +1 more source

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 ...
openaire   +1 more source

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
openaire   +1 more source

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
openaire   +3 more sources