The Effects of Some Chemicals and Growth Substances on Pollen Germination and Tube Growth of Date Palm

Abstract

Boric, fumaric, gibberellic (GA), indoleacetic (IAA), and succinic acids at concentrations of 0.05, 0.5, 5, 50, or 100 ppm in a basic sucrose and agar medium stimulated pollen germination and tube growth of date palm ( Phoenix dactylifera L.). Both germination and tube growth increased with increasing concentration of boric acid, GA, and IAA without injurious effects. Maximum pollen germination was observed at 0.05 ppm succinic acid and 0.5 fumaric acid.