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تاثير التقليم الورقي والرش بالاثيفون في صفات الثمار الفيزيوكيميائية والفسلجية والتشريحية والحاصل في نخيل التمر Phoenix dactylifera L. صنف الحلاوي117 == Effect of leaf pruning and ethephon spray on fruit physico - chemical , physiological , anatomical and yield of Phoenix dactylifera L., cv. Hil
Author name:
ظافر ناصر عبود خلف القطراني
Supervisor name:
علي حسين محمد الطه
General topic:
Agricultural sciences
Specific topic:
Plant - Gardening
Degree:
Master
University:
University Of Basrah - Faculty Of Agriculture - Department Of Horticulture And Garden Engineering
Language:
Arabic
University location:
Basrah
First pages:
31T1820 - p.pdf
Abstract:
This study was conducted in a private orchard at Abi El - Khassib district , Basrah Governorate, during the growing season of 2014 to investigate the effect of leaf pruning at levels of 6 , 9 and 12(leaf . bunch⁻¹)during the onset of pollination and spraying ethephon on bunches at concentrations of Zero , 250 and 500 (mg.L⁻¹) , once, at Kimri stage on fruit physico - chemical , physiological , anatomical characters and yield of date palm ,cv. Hillawi . Results showed that leaf pruning treatmeats of 9 and 12 leaf . bunch⁻¹ recorded significant increases in fruit , pulp fresh weight , fruit size , length and diameter and water content of fruit at Rutab stage, carotene pigment concentration of fruit skin and respiration rate of fruit at Kimri and Khalal stages, ripening percentage at Khalal and Rutab stages, bunch weight of tree at Tamir stage . Leaf pruning treatments of 6 and 12 leaf.bunch⁻¹ increased total chlorophyll pigment concentration of fruit skin at Kimri stage significantly. Leaf pruning treatment at 12 leaf.bunch⁻¹ recoreded significant increases in cell length and width of inner mesocarp of fruit at Khalal stage, and total yield of tree at Tamir stage. Treatments of 6 and 9 leaf.bunch⁻¹ increases significantly total chlorophyll pigment concentration of fruit skin and number of cells in mm² of inner mesocarp of fruit at Khalal stage, whereas treatment at 6 leaf.bunch⁻¹ increased fruit dry matter percentage and total acidity and respiration rate of fruit at Rutab stage. Ethephon treatments at concentrations of 250 and 500 mg.L⁻¹ had significant increases in fresh weight of fruit at Rutab stage, and respiration rate of fruit at both Kimri and Khalal stages. Treatment of 500 mg.L⁻¹ ethephon recorded significant increases in pulp weight of fruit , fruit volume , length , diameter , total soluble solides , phosphorus concentration of fruit at Rutab stage, and carotene pigment concentration of fruit skin at Kimri , Khalal stages, and ripening percentage of fruit at Khalal and Rutab stages, and cell length and width in inner mesocarp of fruit at Khalal stage, and bunch weight and total yield of tree at Tamir stage. Both treatments of Zero and 250 mg.L⁻¹ ethephon recorded significant increases in total chlorophyll pigment concentration of fruit skin at Kimri and Khalal stages, and number of cells in mm² of inner mesocarp of fruit at Khalal stage, whereas control treatment of ethephon increased fruit total acidity and respiration rate significantly at Rutab stage. Bi - combination of leaf pruning at 12 leaf .bunch⁻¹ and spraying ethephon at concentration of 500 mg.L⁻¹ recorded significant increases in most of the studied characters as compared to other bi - combination treatments
