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Effects of Fertilization on Epicuticular Wax Morphology of Needle Leaves of Douglas Fir, Pseudotsuga menziesii (Pinaceae) Item Info

Fertilized stands of Pseudotsuga menziesii were found to have glaucous needles. We investigated the morphological and quantitative characteristics of the epicuticular waxes of needles of fertilized and control trees. Glaucousness was caused by ornate tubular epicuticular wax. Dipping needles in chloroform, which dissolves waxes, eliminated the glaucous appearance. Based on cryostage scanning electron microscopic observations, the epicuticular waxes in the nonstomatal region were much more ornate on the needles of the fertilized trees (experimental needles) than in unfertilized trees (control needles). The stomatal region in both experimental and control needles showed similarly ornate waxes. Quantities of waxes were similar in experimental and control needles. The glaucousness was not the result of greater quantities of wax; rather, fertilization altered wax morphology in the nonstomatal regions.

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Title:
Effects of Fertilization on Epicuticular Wax Morphology of Needle Leaves of Douglas Fir, Pseudotsuga menziesii (Pinaceae)
Creator:
Chiu, S.; Anton, L.H.; Ewers, F.W.; Hammerschmidt, R.; Pregitzer, K.S.
Date Created (ISO Standard):
1992
Approximated Date:
yes
Description:
Fertilized stands of Pseudotsuga menziesii were found to have glaucous needles. We investigated the morphological and quantitative characteristics of the epicuticular waxes of needles of fertilized and control trees. Glaucousness was caused by ornate tubular epicuticular wax. Dipping needles in chloroform, which dissolves waxes, eliminated the glaucous appearance. Based on cryostage scanning electron microscopic observations, the epicuticular waxes in the nonstomatal region were much more ornate on the needles of the fertilized trees (experimental needles) than in unfertilized trees (control needles). The stomatal region in both experimental and control needles showed similarly ornate waxes. Quantities of waxes were similar in experimental and control needles. The glaucousness was not the result of greater quantities of wax; rather, fertilization altered wax morphology in the nonstomatal regions.
Subjects:
research (document genres) botany trees fertilizer
Location:
North and Central Idaho; Eastern Washington; Western Montana; Northeastern Oregon
Publisher:
American Journal of Botany
Source:
Chiu, S., L.H. Anton, F.W. Ewers, R. Hammerschmidt, and K.S. Pregitzer, 1992. Effects of fertilization on epicuticular wax morphology of needle leaves of Douglas fir, Pseudotsuga menziesii (Pinaceae). Amer. J. Bot. 79(2):149-154.
Source Identifier:
Effects_of_Fertilization_of_Epicuticular_Wax_Morphology_of_D-F_Needles_AJB_079_002_1992
Type:
Text
Format:
application/pdf
Language:
eng

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Preferred Citation:
"Effects of Fertilization on Epicuticular Wax Morphology of Needle Leaves of Douglas Fir, Pseudotsuga menziesii (Pinaceae)", Idaho Forestry Research Collection, University of Idaho Library Digital Collections, https://www.lib.uidaho.edu/digital/forestryresearch/items/forestryresearch876.html
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