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The impact of heat units on the physical and chemical characteristics of two grape varieties in Egypt | ||
| Journal of Horticulture and Postharvest Research | ||
| دوره 8، Issue 4 - شماره پیاپی 32، اسفند 2025، صفحه 465-476 اصل مقاله (1.21 M) | ||
| نوع مقاله: Original Article | ||
| شناسه دیجیتال (DOI): 10.22077/jhpr.2025.8464.1453 | ||
| نویسندگان | ||
| Ahmed S. Abd El-Rahman* 1؛ Fawzia I. Moursy1؛ Amira Sh. Soliman1؛ Mohamed A. Abd El-Wahab2؛ Alaa A. Khalil3 | ||
| 1Department of Natural Resources, Faculty of African Postgraduate Studies, Cairo University, 12613 Giza, Egypt | ||
| 2Viticulture Research Department, Horticulture Research Institute, Agricultural Research Center, Giza, Egypt | ||
| 3Agricultural Meteorological Applications Research Department, Central Laboratory for Agricultural Climate, Agricultural Research Center, Giza, Egypt | ||
| چکیده | ||
| Purpose: Climatic circumstances are significant determinants in the formation and growth of the vine. Due to variations in climatic parameters, high-temperature affects phenology, the ripening period, and physicochemical characteristics are detrimental to the quality of the grapes produced and gradually decrease the yield. Research method: This investigation studies the effect of heat units on the yield and fruit quality of some grape cultivars in different regions of Egypt. This trial evaluates two grape cultivars (Flame Seedless and Crimson Seedless) grown in three distinct locations (El-Behira, El-Menoufia, and El-Minia governorates) during seasons (2021 and 2022). Findings: Heat units negatively affect the phenological dates of the grape growth cycle. However, the warmer regions (El-Minia governorate) accelerated various phases or stages in the phenological development of grapevines, including bud burst, full flowering, fruit set, veraison, and grape maturity as compared to the moderate regions (El-Behira and El-Menoufia governorates). Regarding yield and its attributes, the moderate regions (El-Behira and El-Menoufia governorates) had the highest yield. They improved the bunch physiochemical attributes of Flame Seedless and Crimson Seedless grapes compared to the warmer region (El-Minia governorate). Research limitations: There were no limits. Originality/Value: Heat units negatively affect the phenological stages of grape growth (bud break, full flowering, fruit set, veraison, and grape maturity) and physicochemical characteristics. | ||
| کلیدواژهها | ||
| Climate؛ Grape؛ Phenology؛ Veraison؛ Yield | ||
| مراجع | ||
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