1887
Volume 4(2023) Number 1
  • EISSN: 2708-0463

Abstract

نُفذ هذا البحث في كلية الزراعة، في جامعة دمشق (دمشق/ سورية) خلال عام 2021، بهدف دراسة تأثير الرش بالبورون (حمض البوريك) (0, 50, 100 ppm) والسكريات الكحولية (السوربيتول والمانيتول) بثلاثة تراكيز (10، 20، 30 غ/ل1) في نمو وإنتاج نبات الفراولة ونوعية ثماره () صنف أوزوغراند. لوحظ من النتائج أن الرش بالسكريات الكحولية (السوربيتول، والمانيتول) يحسّن نمو وإنتاج نبات الفراولة، وكذلك نوعية ثماره؛ فازدادت قيم المؤشرات المدروسة بزيادة التركيز، فوصل عدد الأوراق (19.06، 21.62، 23.95 ورقة/نبات) عند رش النبات بالسوربيتول (19.78، 22.57، 25.13 ورقة/نبات) والمانيتول (10، 20، 30 غ/ل، على الترتيب) مقارنة بالشاهد 15.27 ورقة/نبات. تأثر الإنتاج الكلي إيجابياً عند الرش بالمانيتول تركيز 30 غ/ل (556.29 غ/ نبات)، في حين وصل إلى (465.48 غ/ نبات) للسوربيتول بتركيز 30 غ/ل، مقارنةً بالشاهد. تحسنت نوعية الثمار بزيادة تركيز البورون (القيمة الأعلى للمواد الصلبة الذائبة (8.69%) سُجّلت عند التركيز (100 ppm) من البورون، مقارنة بالشاهد (7.59%). تفوق التفاعل بين (المانيتول 30غ/ل، والبورون 100 ppm) معنوياً في أغلب المؤشرات المدروسة وعلى نحو ملحوظ، مثل عدد الأوراق (29.06) ورقة/ نبات، والإنتاج الكلي (712.03غ)، وكمية فيتامين (C) (52.03 مغ/100غ وزن طازج)، مقارنةً بالشاهد 0غ/ل. أظهرت نتائجنا التأثير الإيجابي للرش الورقي بالسكريات الكحولية والبورون في نبات الفراولة، فينصح باستخدام التركيز (30غ/ل) للسكريات الكحولية و(100 ppm) للبورون؛ للتفوق المعنوي الذي حققاه مقارنةً بشكل مستقل ببقية التراكيز، ويفضل الرش بالمانيتول لأنه سجّل قيماً أكثر ارتفاعاً مقارنةً بالسورية.

This research aimed to study the effect of spraying boron and sugar alcohols on vegetative growth, fruit quality and total yield of Strawberry plants ( Oso Grande). The experiment was carried out at the Faculty of Agriculture (University of Damascus/Syria) during 2021. Results showed that spraying strawberry plants with sorbitol and mannitol at three different concentrations (10, 20 and 30 g/L-1) and boric acid at three concentrations of (0, 50 and 100 mg l-1) increased most of the studied parameters. It was also noticed that the number of leaves increased (19.06, 21.62, 23.95 leaf/plant) when plants were sprayed with sorbitol (10, 20 and 30 g/L-1) respectively, and (19.78, 22.57, and 25.13 leaf/plant) when plants were sprayed with mannitol (10, 20 and 30 g/L-1) respectively as compared to the control treatment (15.27 leaf/plant). Total yield was positively affected by spraying with mannitol 30 g/L-1 (556.29 g/plant) while it reached (465.48 g/plant) with sorbitol 30 g/L-1 in comparison with the control (fruit quality was increased by increasing boron concentration). The highest total soluble solids (8.69%) were observed at the concentration of 100 ppm of boron in comparative with the control (7.59%). The interaction between two variables (30g/L-1 mannitol and 100 ppm boron) significantly increased all studied parameters, such as number of leaves (29.06), leaf area (32.60cm2), number of flowers (35.43), total yield (712.03 gm.) in addition to fruit quality (TSS 9.30% and ascorbic acid content 52.03 mg/100g fresh weight) as compared to control treatment (0 mg/l).

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