EFFECT OF SPRAYING WITH SALICYLIC ACID AND HYDROGEN PEROXIDE ON SOME QUALITY PROPERTIES OF FRUITS OF THREE VARIETIES OF DATE PALM TREES Phoenix dactylifera L. PROPAGATED VIA TISSUE CULTURE

Abstract

The experiment was conducted at the AL-Kut Date Palms Station of Horticulture Department and the Ministry of Agriculture for 2019 season with the aim of studying the effect of spraying with salicylic acid (SA) and hydrogen peroxide H2O2 (Control 0%, SA 250 and 500 mg L-1, H2O2 at a concentration of 3% and 6%) on three cultivars (Barhi, Hilali and Majhool) of propagated via tissue culture and the interaction between them in some qualities properties of the fruits, the research was carried out as a factorial experiment with the design of complete random sectors (RCBD) and with three replicates. The results showed when using the SA 500 and 250 mg.L-1led To increase the percentage of total sugars amounted to 60.58% and 59.22 respectively, outperforming the rest of the coefficients Spraying and reducing sugars decreased when using spray transactions compared to control treatment, while the percentage rose sucrose in most transactions spray. When using H2O2, 6% increase the percentage of total soluble solids by 64.32% and decreased the percentage of fruit fall to 4.78%. The cultivars did not differ significantly in their content of total and reducing sugars and sucrose, while the Majhool and the Barhee significantly 65.56 and 64.61 compared to Hilaly 49.08 in the percentage percentage of the total soluble solids, whereas the Majhool significantly outperformed in the weight of the pulp of the soft fruit 22.43 g. Fruit -1.