Bioactivity of glandular trichome exudates obtained from <i>Solanum sarrachoides</i> and tested on <i>Tetranychus evansi</i> females.

Abstract

(a) Oviposition deterrent activity of glandular trichome components of Solanum sarrachoides to T. evansi. Untreated leaf disks of S. scabrum were used as control in bars I, II and III. Filter paper arenas treated with dichloromethane and methanol were used as control in bars IV and V. Representative chromatograms of chemical components present in glandular trichome exudates dissolved in dichloromethane from: (b) Solanum sarrachoides. Peak no: 1 = 2-undecanone; 2 = decanoic acid; 3 = undecanoic acid; 4 = dodecanoic acid; 5 = myristoleic acid; 6 = tetradecanoic acid; 7 = pentadecanoic acid; 8 = palmitoleic acid; 9 = hexadecanoic acid; 10 = heptadecanoic acid; 11 = linoleic acid; 12 = oleic acid; 13 = octadecanoic acid and (c) S. villosum; and (d) representative chromatogram of chemical components present in glandular trichome exudates of S. sarrachoides dissolved in methanol; Compound no. 1 = quercetin; 2 = 6-hydroxyluteolin; 3 = hesperetin.</p