EFFECT OF SITOFEX (CPPU) ON FRUIT SET, FRUIT QUALITY OF ANNA APLLE TREES | ||||
| Fayoum Journal of Agricultural Research and Development | ||||
| Article 25, Volume 23, Issue 1, January 2009, Page 54-65 PDF (258.67 K) | ||||
| Document Type: Research articles. | ||||
| DOI: 10.21608/fjard.2009.197036 | ||||
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| Authors | ||||
| Fatma I. I. Abou Grah; Nagwa Abd El-Megeed; H. El-Shereif | ||||
| Hort. Res. Institute, Agric. Res. Center Giza. Egypt . | ||||
| Abstract | ||||
| Efficiency of the synthetic cytokinin (CPPU) (N- (2-chloro-4- pytidyle-N-phenylurea) was studied on Anna apple trees at full bloom, 14 days after full bloom and two time spraying (at full bloom and 14 days after full bloom). CPPU tended significantly to increase the percentage of fruit set, yield and fruiting, while it decreased fruit drop < br />of all treatments. The best results were obtained by 20 ppm CPPU at full bloom and 10 ppm CPPU two time spraying in the first season. While, the 15 pm CPPU at full bloom was the best during the second season. Highest fruit weight, fruit size and fruit dimensions were obtained by 15 ppm concentrations at 14 days after full bloom in the two seasons. Concerning fruit shape index (L/D), an increase in fruit diameter than its length due to all conducted CPPU treatments in both seasons. As well as, acidity and TSS/acid ratio were significantly improved as a result of all studied treatments when compared to the control. It could be concluded that, most of studied treatments resulted in a positive and significant effect on most studied characteristics, since (CPPU at 15 ppm at full bloom and 20 ppm at 14 days after full bloom were the most effective treatments for increasing fruit set and yield as well as improving the most fruit properties. | ||||
| Keywords | ||||
| Cytokinin (CPPU); Anna apple trees; Fruit set and Fruit drop | ||||
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