Impact of Some Preharvest Treatments on Fruit Size and Quality of

Ahmed, Aly, M.; Ezz, Thanaa M.; Awad, Rehab M.; Abd El-Megeed, Nagwa A.; Afify, Ahmed M.

doi:10.21608/eajbsh.2024.337394

	Impact of Some Preharvest Treatments on Fruit Size and Quality of "African Rose" Plums
Egyptian Academic Journal of Biological Sciences, H. Botany
Volume 15, Issue 1, June 2024, Page 17-32 PDF (857.83 K)
Document Type: Original Article
DOI: 10.21608/eajbsh.2024.337394
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Authors
Aly, M. Ahmed¹; Thanaa M. Ezz¹; Rehab M. Awad¹; Nagwa A. Abd El-Megeed²; Ahmed M. Afify¹
¹Plant Production Department, Faculty of Agriculture Saba Basha, Alexandria University, Alexandria, Egypt
²Horticulture Research Institute, Agriculture Research Center, Giza
Abstract
This study was carried out during the two seasons 2020 and 2021 on five years old "African Rose" plum (Prunus salicina L.) budded on Nemaguard rootstock, grown in a sandy soil under drip irrigation system under El-Nubaria, EL-Beheira Governorate, enhance the fruit size and quality of “African Rose” plums, using at least of these treatments were; T₁- Control, T₂- 20 ppm TDZ, T₃- 30 ppm TDZ, T₄- 0.5 ppm Br, T₅- 1 ppm Br, T₆-0.5% KNO₃, T₇-1% KNO_3, T₈-20 ppm TDZ and 0.5 ppm Br, T₉- 20 ppm TDZ and 0.5% KNO_3, T₁₀- 20 ppm TDZ, 0.5 ppm Br and 0.5% KNO_3, T₁₁- 30 ppm TDZ and 1 ppm Br, T₁₂- 30 ppm TDZ and 1% KNO₃ and T₁₃- 30 ppm TDZ, 1 ppm Br and 1% KNO₃.The experimental design was a randomized complete block design (RCBD) with five replicates. Results indicated that all foliar applications above treatments, significantly (P≤0.05) increased growth characters and number of fruits per tree as compared with the control during both seasons. Also, all treatments, significantly (P≤0.05) increased fruit weight(gm), yield (kg/tree), total yield (ton/feddan), anthocyanin and vitamin C as compared with the control treatment. Moreover, the application of 30 ppm TDZ+1 ppm Br +1% KNO₃ and 30 ppm TDZ+ 1 ppm Br treatments, significantly (P≤0.05) increased fruit size, length, diameter and firmness as compared with the others during both seasons. On the other hand, all K- nitrate and 30 ppm TDZ + 1 ppm Br +1% KNO₃ treatments, significantly (P≤0.05) increased total soluble solids (%), and total sugars but decreased fruit juice acidity (%) as compared to the control and the rest of the treatments during both seasons.
Keywords
"African Rose" plum; thidiazuron; brassinosteroids; KNO3; Fruit size; quality


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Impact of Some Preharvest Treatments on Fruit Size and Quality of "African Rose" Plums