Document Type : Original Article
Authors
1
Hort. Res. Institute, Agric. Res. Center, Egypt.
2
Department of Tropical Fruit, Horticulture Research Institute, Agriculture Research Center, Egypt.
Abstract
The present study was carried out during two successive seasons 2006 and 2007, on Hayany date palm cultivar grown at four locations differed in environmental pollution in Alexandria Governorate. (A) Mostafa Kamel street as indicated to manufacturing and high way area, (B) Air port road as a density of settlement and traffic area, (C) El-Montaza Garden as a high density of plants and vehicular traffic and (D) El-Mamoura Botanical Garden (Horticulture Research Institute) as a palm trees orchard, fare from the major road about 700 meters. The effect of environmental pollution on pinnae composition, fruit set and fruit quality was studied. Soil analysis for every location were taken at two depths 0-30 cm and 30-60 cm to determine some heavy metals (Cd and Pb) content. Regarding the yield, highest yield was obtained at locations (C) and (D), while it was the lowest at, locations (A) and (B). Fruit set percentage was lowest at location (B) in comparison with other tested regions. Concerning physical properties, significant differences in fruit dimension, weight and flesh/fruit weight percentage they showed greater values at location (D) and lower at location (B). As for chemical properties, total sugars content was significantly higher in fruits at location (C), whereas it was the lowest at location (D), such differences were significant. Regarding T.S.S%, the differences between tested locations did not reach the level of significant. Fruits of “Hayany” had lower tannins percentage at location (A) as compared with other locations; no significant differences were detected in this respect between other three tested locations. Concerning effect of environmental pollution on some minerals content in fruits and pinnae, nitrogen, potassium and lead content in fruits increased in location (A) than other locations. Phosphorus content was significantly higher at location (D), whereas, it was the lowest at location (B). Cadmium content was not found in fruits or pinnae among all tested locations. As for pinnae mineral content, at location (C); nitrogen was the lowest, whereas phosphorus was the highest in comparison with other tested locations. Regarding potassium content, it gave highest value at location (D) than other locations. No significant differences were detected in pinnae lead content among tested locations. The results of this study emphasize that Hayany date palm cultivar was not affected by pollution contamination.
Main Subjects
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