Notes: The Role of Alkanes in Epicuticular Wax Relative to Tolerance of Pine Species to Saline Spray

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A study of the epicuticular waxes on the foliage of saline-spray tolerant Japanese black pine (Pinus thunbergii) and salt-sensitive eastern white pine (Pinus strobus) showed a greater percentage of longer chain alkanes in the former species (87 percent) than in the latter (68 percent). Alkane concentrations increased with increasing temperature and longer photoperiod. The longer chain alkanes are reportedly more resistant to the penetration of polar solutions than are shorter chain alkanes. Alkane concentration was greater for both pine species in trees grown at higher vs lower temperatures and longer vs shorter photoperiods, corresponding inversely to trends previously reported by the authors with respect to foliar salt uptake by both pines and other species at these respective temperatures and photoperiods. Forest Sci. 32:487-492.

Keywords: Pinus strobus; Pinus thunbergii; alkanes; gas chromatography; salt spray

Document Type: Miscellaneous

Affiliations: Professor, Department of Plant Pathology, New Jersey Agricultural Experiment Station, New Brunswick, NJ 08903

Publication date: June 1, 1986

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