تاثير الرش بحامض الجبرليك وكلوريد الكالسيوم في الحاصل والصفات النوعية والقابلية الخزنية لثمار السدر صنف تفاحي Ziziphus mauritiana Lam. cv. Tufahi == Effect of Sprying Gibberellic Acid and Calcium Chloride on Yield, Qualitative Characteristics and Storage Ability of Jujube Fruits Ziziphus mauritiana Lam. cv. Tufahi
Author name:
نضال ريسان حريز سحالة
Supervisor name:
ضياء احمد طعين | ماجد عبد الحميد ابراهيم
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:
31T1874 - p.pdf
Abstract:
The present study was conducted on 12 - years old jujube trees "Ziziphus mauritiana Lam." , cv. Tufahi which were grown in a private orchard situated at AL - Sedea District , Basrah Governorate during the growing season 2013 - 2014. The aim of the study will to investigate effects of spraying gibberellic acid at the concentrations of 25 mg/l , 50 mg/l and calcium chloride at the concentrations of 1% , 2% and their combinations on yield and some vegetative , physical , chemical , physiological characteristics and the storage ability of fruits.Results could be summarized as follow : - A - Field experiment1. The results of study showed significant effect of spraying gibberellic acid on all the studied parameters with the treatment of 50 mg/l gibberellic acid recording the highest significant increase in leaf area , leaf water content ,leaf fresh and dry weights, total carbohydrates and the length , diameter , fresh weight , volume of fruits in addition to the water content, sucrose of fruits and the amount of yield.2. Treatment of 2% calcium chloride gave the highest significant increase in vitamin C concentration, total carbohydrates of leaf and calcium and chloride concentrations in fruit.3. Control treatment recorded the highest significant increase in dry mater , total soluble solids , total and reducing sugars, respiration rate and invertase and cellulase activities and carotene concentration in fruit skin .4. The period after full bloom factor had a significant effect on the studied vegetative parameters with the period of 10/2/2014 recording the highest significant increase in fresh weight of leaf, leaf area, carbohydrates content.The period of 10/12/2013 had a significant increase in water content per leaf.5. The combination treatment of 50 mg/l gibberellic acid and the period of 10/2/2014 recording the highest significant increase in leaf area and leaf water content. The combination treatment of 2% calcium chloride and the period of 10/2/2014 was superior in carbohydrates content while the combination treatment of untreated fruits and the period of 3/2/2014 gave the highest activity of cellulase.B - storage experiment1. Controle treatment recorded the the highest significant increase in total soluble solids , total and reducing sugars , loss in weghit of fruits , the percentage of ripening progress and it was the highest deteriorated treatment.2. Treatment of 2% calcium chloride gave the lowest significant increase in Physiological disorders, fungal decay and loss inweight of fruits.while fruit treated with 50 mg/l gibberellic acid retained the highest percentage of water content.3. The combination treatment of untreated fruits and storage period gave the highest significant increase in the percentage of physiological disorders and fungal decay, loss in weghit of fruits , the percentage of ripening progress and the lowest percentage of water
