El-Sayed, M., Fayed, A. (2023). Characterization and evaluation of some new sweet grape cultivars under Egyptian conditions. Alexandria Journal of Agricultural Sciences, 68(4), 383-392. doi: 10.21608/alexja.2023.257535.1057
Mohamed E. A. El-Sayed; Ahmed S. K. Fayed. "Characterization and evaluation of some new sweet grape cultivars under Egyptian conditions". Alexandria Journal of Agricultural Sciences, 68, 4, 2023, 383-392. doi: 10.21608/alexja.2023.257535.1057
El-Sayed, M., Fayed, A. (2023). 'Characterization and evaluation of some new sweet grape cultivars under Egyptian conditions', Alexandria Journal of Agricultural Sciences, 68(4), pp. 383-392. doi: 10.21608/alexja.2023.257535.1057
El-Sayed, M., Fayed, A. Characterization and evaluation of some new sweet grape cultivars under Egyptian conditions. Alexandria Journal of Agricultural Sciences, 2023; 68(4): 383-392. doi: 10.21608/alexja.2023.257535.1057
Characterization and evaluation of some new sweet grape cultivars under Egyptian conditions
Department of Viticulture, Horticulture Research Institute, Agricultural Research Center, Giza, Egypt
Receive Date: 23 December 2023,
Revise Date: 31 December 2023,
Accept Date: 31 December 2023
Abstract
This study was carried out for two successive seasons 2022 and 2023 on five years old grapevines to evaluate new grape cultivars namely Sweet Sapphire, Sweet Celebration, Sweet Globe and Sweet Joy grafted on 1103 paulsen. The vines were cultivated in the El-Rawda vineyard located in the El-Nubaria region and were planted in sandy clay loam soil. Results showed that in both seasons, Sweet Celebration gave significantly lower leaf area than the rest cultivars in the meantime there were no significant differences among the remaining cultivars. In the first season, Sweet Celebration had remarkably higher internode length than Sweet Globe and Sweet Sapphire cultivars. In the first season, Sweet Globe and Sweet Sapphire had considerably greater internode thickness than Sweet Celebration. In the first season, Sweet Sapphire and Sweet Globe had significantly higher internode numbers than Sweet Joy and Sweet Celebration. In the first season, Sweet Sapphire had remarkably lower cane length than the rest varieties. In both seasons, Sweet Celebration had significantly lower pruning wood weight than the rest cultivars. : In both seasons, Sweet Joy and Sweet Globe had highly significant trunk thickness as compared with the Sweet Celebration cultivar. Sweet Globe had the greatest number of clusters and bud fertility percentages in both seasons. Sweet Sapphire had significantly the highest berry weight, berry size, weight of 100 berries, size of 100 berries and juice volume in both seasons. Besides, in both seasons, Sweet Sapphire recorded remarkably the greatest average cluster weight, cluster length, berry length, yield per vine and productivity per feddan. Also, . in both seasons, Sweet Sapphire had considerably the greatest L/D ratio. Meanwhile, in both seasons, Sweet Sapphire gave the significantly lowest berry diameter in the meantime there were no significant differences among the other cultivars. In both seasons, Sweet Joy gave significantly the greatest berries number while Sweet Sapphire recorded considerably the lowest value. Concerning shape and colour berry, Sweet Sapphire was unusually berries of tubular, elongated, crispy pulp and black skin. Sweet Celebration had oval berries, very crunchy and dark red colour. Sweet Globe gave large, round berries and very crispy and yellowish-green skin. Sweet Joy recorded elongated oval, firm flesh and black colour. There were no found seeds and shot berries for all the tested cultivars. In both seasons, berry adherence strength was not significantly influenced by the studied cultivars. Sweet Globe had the remarkably highest moisture content in the second season. All the studied cultivars are considered medium ripening. Sweet Celebration was a highly significant T.S.S and T.S.S/acidity ratio in both seasons. Acidity was not remarkably affected by the tested varieties in both seasons. We recommend that the Sweet Sapphire cultivar be grown under the El-Nubaria region because it has the significantly highest yield and high fruit quality.
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