ESTIMATION OF SOME PHYSICO-CHEMICAL CHARACTERISTICS, MINERAL ELEMENTS, SUGAR FRACTIONS AND AMINO ACIDS OF SOME ASWAN DRY-DATE CULTIVARS PRODUCED THROUGH TRADITIONAL METHOD (OFFSHOOTS) AND TISSUE CULTURE TECHNIQUE
This study was carried out to hold a comparison between dates obtained from traditional culture palms as known over the centuries (offshoots), and fruits of tissue culture palms as modern biotechnology which may provide unprecedented opportunities to improve quality parameters and agricultural productivity.
Three dry date cultivars namely Gondaila, Bartamuda and Sakkoti, grown at Aswan Governorate, Egypt, during the 2008-2009 season, were assessed for some physico-chemical characteristics, mineral elements, sugar fractions and amino acids.
Generally, results indicated that tissue culture dates gave the highest values of fruit weight except Sakkoti, pulp/fruit percentage, moisture, reducing sugars, total sugars, potassium, magnesium, cobalt, lead and copper while traditional culture dates were superior in crude fiber, total soluble solids, iron, sodium, manganese and phosphorus.
Moreover, both the sugar fractions and the amino acid contents were assessed by HPLC technique. The results revealed that tissue culture dates had the highest percentages in glucose and fructose. In contrast, traditional culture dates were superiority in sucrose to those of tissue culture. The flesh of the tested date cultivars contains many amino acids. Cysteine, histidine, alanine, glycine and glutamic acid were determined. There were variations between traditional dry date cultivars and tissue culture ones in amino acid contents.
Overall, significant differences (at 5% level) in most measured attributes were found between traditional culture dates and tissue ones as propagation method, genotype and interaction between them.
So, production of tissue culture date cultivars should be extended at Aswan Governorate and other successive production areas due to the short life cycle; after plantation (3 years old) they produce dates with high quality.
Generally, results indicated that tissue culture dates gave the highest values of fruit weight except Sakkoti, pulp/fruit percentage, moisture, reducing sugars, total sugars, potassium, magnesium, cobalt, lead and copper while traditional culture dates were superior in crude fiber, total soluble solids, iron, sodium, manganese and phosphorus.
Moreover, both the sugar fractions and the amino acid contents were assessed by HPLC technique. The results revealed that tissue culture dates had the highest percentages in glucose and fructose. In contrast, traditional culture dates were superiority in sucrose to those of tissue culture. The flesh of the tested date cultivars contains many amino acids. Cysteine, histidine, alanine, glycine and glutamic acid were determined. There were variations between traditional dry date cultivars and tissue culture ones in amino acid contents.
Overall, significant differences (at 5% level) in most measured attributes were found between traditional culture dates and tissue ones as propagation method, genotype and interaction between them.
So, production of tissue culture date cultivars should be extended at Aswan Governorate and other successive production areas due to the short life cycle; after plantation (3 years old) they produce dates with high quality.
El-Ghazali, M.N., Awad-Allah, M.A.A., Gadalla, E.G. and El-Banna, A.A. (2010). ESTIMATION OF SOME PHYSICO-CHEMICAL CHARACTERISTICS, MINERAL ELEMENTS, SUGAR FRACTIONS AND AMINO ACIDS OF SOME ASWAN DRY-DATE CULTIVARS PRODUCED THROUGH TRADITIONAL METHOD (OFFSHOOTS) AND TISSUE CULTURE TECHNIQUE. Acta Hortic. 882, 1195-1208
DOI: 10.17660/ActaHortic.2010.882.137
https://doi.org/10.17660/ActaHortic.2010.882.137
DOI: 10.17660/ActaHortic.2010.882.137
https://doi.org/10.17660/ActaHortic.2010.882.137
Phoenix dactylifera L., traditional method (offshoots), tissue culture technique, 'Gondaila', 'Bartamuda', 'Sakkoti', physico-chemical composition, mineral elements, sugar fractions, amino acid contents
English