Effect of Parlatoria blanchardi Targ. (Homoptra, Coccidae) on the Metabolites in the Leaves of Date Palm (Phoenix dactylifera L.) PDF

Keywords

date palm, organic acids, leaves

Abstract

The effect of Parlatoria blanchardi on some metabolites of healthy and injured leaf discs of date palm (Phoenix dactylifera L.) was studied. No significant changes were observed in the reducing and non-reducing sugars of leaf discs before and after injury by the insect. The analysis of soluble sugars by GLC revealed the presence of fructose, glucose, inositol, sucrose, and glycerol. However, the kind of soluble sugars changed in the injured lead discs; glycerol content increased and sorbitol appeared after the injury. Organic acids did not change significantly in healthy and injured lead discs. Soluble protein content, however, increased significantly in injured lead discs as compared to healthy ones.