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Effect of honeybee visits to apple flowers on fruit set and fruit characteristics [electronic resource].

By:

Yehia, T. A

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Language: English Summary language: Arabic Description: p.497-514Other title:

تأثير زيارات نحل العسل لازهار التفاح علي العقد و مواصفات الثمار [Added title page title]

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Journal of biological chemistry and environmental sciences, 2008 v. 3 (2) Part III [electronic resource].

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In: Journal of Biological Chemistry and Environmental Sciences 2008.v.3(2)IIISummary: The present investigation was carried out on Anna and Dorsett Golden apple trees during two successive seasons 2006 and 2007. It aimed to study the effects of number of honeybee visits/ flower on fruit set and fruit characteristics of the studied cultivars. Several sequential treatments were applied from 1 bee visit/ flower up to ten bee visits/ flower besides zero visit (self pollination) and open pollination treatments. Results of the present study showed direct improvements as a result of increased bee visits/ flower which was reflected on significant increase in fruit set%, number of seeds/ fruit and average seed weight. Moreover, indirect effects of activated bee visits/ flower were expressed as significant increment in fruit weight which averaged 19.2 g for Anna apple fruit as a result of zero bee visit/ flower and increased significantly to 37.45 g for only one bee visit/ flower and continued its significant increment to reach 106.3 g for 10 bee visits/ flower in season 2006. Similar trend was observed for Dorsett Golden during both seasons of the study. Consequently, significant improvements in fruit volume, fruit length, diameter, shape index, TSS% and firmness were recorded and presented. Thus, it can be recommended from results of the present study to maintain sufficient honey bee colonies in Anna and Dorsett Golden apple orchards that offer at least ten bee visits/ flower to increase fruit set and to achieve satisfactory improvement in yield and fruit characteristics. Key Words: apples- pollination- honeybee- fruit set- fruit characteristics.

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The present investigation was carried out on Anna and Dorsett Golden apple trees during two successive seasons 2006 and 2007. It aimed to study the effects of number of honeybee visits/ flower on fruit set and fruit characteristics of the studied cultivars. Several sequential treatments were applied from 1 bee visit/ flower up to ten bee visits/ flower besides zero visit (self pollination) and open pollination treatments. Results of the present study showed direct improvements as a result of increased bee visits/ flower which was reflected on significant increase in fruit set%, number of seeds/ fruit and average seed weight. Moreover, indirect effects of activated bee visits/ flower were expressed as significant increment in fruit weight which averaged 19.2 g for Anna apple fruit as a result of zero bee visit/ flower and increased significantly to 37.45 g for only one bee visit/ flower and continued its significant increment to reach 106.3 g for 10 bee visits/ flower in season 2006. Similar trend was observed for Dorsett Golden during both seasons of the study. Consequently, significant improvements in fruit volume, fruit length, diameter, shape index, TSS% and firmness were recorded and presented. Thus, it can be recommended from results of the present study to maintain sufficient honey bee colonies in Anna and Dorsett Golden apple orchards that offer at least ten bee visits/ flower to increase fruit set and to achieve satisfactory improvement in yield and fruit characteristics. Key Words: apples- pollination- honeybee- fruit set- fruit characteristics.

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