Pesticide Effects on the Plant Cuticle: II. EPTC Effects on Leaf Cuticle Morphology and Composition in Brassica oleracea L.1
Open Access
- 1 September 1976
- journal article
- Published by American Society for Horticultural Science in Journal of the American Society for Horticultural Science
- Vol. 101 (5) , 586-590
- https://doi.org/10.21273/jashs.101.5.586
Abstract
S-ethyl dipropylthiocarbamate (EPTC, 2.24 kg/ha) inhibited epicuticular wax production by developing leaves of cabbage (Brassica oleracea L. capitata group cv. Market Prize). Similar inhibition of wax deposition was observed on abaxial (66.5%) and adaxial (67.5%) leaf surfaces. Wax bloom was absent on EPTC-treated plants, and its absence was associated with a marked reduction in surface fine-structure. No significant changes in cuticle thickness, structure, or morphology were observed due to EPTC-treatment as indexed by staining with Sudan III and IV and viewing with plane-polarized light. EPTC did not significantly affect the total weight of the cuticular membrane, cuticular wax, or cutin matrix, but there was a significant increase in the carbonate plus water soluble fraction (+33.4 μg/cm2), which approximately equaled the decrease in epicuticular wax weight (–28.8 Mg/cm2).Keywords
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