Changes in soluble sugar content during the development of fruits in some varieties of Omani date palm (Phoenix dactylifera)

The abundance od soluble sugars in six varieties of Date Palm (Phoenix dactylifera), as well as the patterns of soluble sugar accumulation in relation to the specific stage of development, have been studied. The monosaccharide fructose was found to be the major sugar in all varieties. Total soluble sugar levels were found to increase steadily as the fruits developed. The Nighal variety had the highest sugar levels. There was a decrease in fresh weight with an increase in sugar concentration, while the absolute sugar levels were found to remain constant.