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Epicuticular waxes of four eragrostoid grasses
Authors:Alexander P Tulloch
Institution:National Research Council, Plant Biotechnology Institute, Saskatoon, Saskatchewan, Canada S7N OW9
Abstract:The major components of Sporobolus airoides wax were hydrocarbons (37%, C27–C33), those of Bouteloua curtipendula and Eragrostis trichoides waxes esters (28% and 31%, respectively) and those of Muhlenbergia wrightii wax free alcohols (57%, almost entirely C28). Free alcohols formed 22% of the wax from B. curtipendula, 19 % of the wax from E. trichoides and 10% of the wax from S. airoides; the compositions ranged from C26 to C32 with C32 the major component. These alcohol compositions are similar to those found for other species in the subfamily Eragrostoideae. The esters contain 32–46% of acylated triterpenols, principally α- and β-amyrins. Aldehydes were present in all the waxes except for that from S. airoides.
Keywords:Muhlenbergia wrightii  Eragrostis trichoides  Gramineae  epicuticular wax composition  hydrocarbons  triterpenol esters  alkanols  octacosanol  dotriacontanol  aldehydes  
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