CUTICULAR LIPIDS FROM WILD AND CULTIVATED PEANUTS AND THE RELATIVE RESISTANCE OF THESE PEANUT SPECIES TO FALL ARMYWORM AND THRIPS

Cuticular lipids were extracted from blooms and foliage of the peanut cultivar Arachis hypogaea L. (Southern Runner) and identified by gas c hromatography-mass spectrometry. The major components of the bloom sur face lipids were n-alkanes, aldehydes, and fatty acids, while fatty al cohols, fatty acids, and n-alkanes were the major components of the fo liage lipids. Cuticular lipids of the foliage from five wild peanut sp ecies, A. glandulifera, A. batizocoi, A. ipaensis, A. chacoense, and A . paraguariensis differed in composition. Each wild peanut species was more resistant to fall armyworm, Spodoptera frugiperda, than the cult ivar was, and each suffered less thrips damage than the cultivar did.