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العنوان
EFFECT OF SOME PRE-HARVEST TREATMENTS ON
STORABILITY AND QUALITY OF TOMATO
(LYCOPERSICON ESCULENTUM MILL.) FRUITS /
المؤلف
Emara, Ahmed El-Sayed Ewes.
هيئة الاعداد
باحث / أحمد السيد عويس عمارة
مشرف / محمد أمين سليمان
مناقش / طارق عبد الفتاح المصرى
مناقش / ابراهيم غنيم
الموضوع
Effectenbeurzen.
تاريخ النشر
2017.
عدد الصفحات
112 p. ;
اللغة
الإنجليزية
الدرجة
ماجستير
التخصص
العلوم الزراعية والبيولوجية
تاريخ الإجازة
24/4/2017
مكان الإجازة
جامعة الفيوم - كلية الزراعة - قسم البساتين
الفهرس
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Abstract

Two identical sets, each set included two experiments, conducted
during the fall seasons of 2014 and 2015. The 1st and 2nd sets were field and
cold storage trials, orderly. The scope of these experiments (field and cold
storage) were to investigate the foliar application of calcium chloride and
potassium thiosulfate each at 0.0, 0.2 and 0.4 % on morphological
characters, fruits yield and its components, leaf chemical constituents and
fruit storage ability of tomato hybrid 65010. The experimental layout of field
experiments was a split-plot based on Randomized Complete Blocks design
with three replications. Calcium chloride and potassium thiosulfate levels
were randomly distributed in the main and sub-plot, respectively. The
experimental layout of cold storage experiments was a split-split-plot based
on Randomized Complete Blocks design with three replications. Time of
cold storage, calcium chloride and potassium thiosulfate levels were
randomly distributed in the main, sub- and sub-sub plots, consecutively.
Results of field experiments displayed that, foliar application of
calcium chloride at 0.4 %, significantly, attained the highest mean values of
plant height, number of branches and leaves, leaf area and canopy dry weight
plant-1, fruit number and weight plant-1, average fruit weight, total and
marketable yield fed-1, leaf P, N, Ca and total chlorophyll contents. Also,
foliar application of potassium thiosulfate at 0.4 %, significantly, stimulated
plant growth except number of leaves plant-1, fruits yield and its components
except fruit number plant-1, leaf K and Ca contents. The interaction between
calcium chloride and potassium thiosulfate each at 0.4 % resulted in the
highest magnitudes of morphological characters, fruits yield and its
components with the sole exception on fruits number plant-1, leaf Ca and
total chlorophyll contents whereas, Leaf N, P and K contents were varied
between the two seasons.
Concerning the results of cold storage experiments; positive
responses on fruit titratable acidity, vitamin C, lycopene and weight loss
contents, while negative impact on firmness at the termination than the
beginning of cold storage. Pre-harvest foliar application of calcium chloride
at 0.2 and/or 0.4 % caused increments in fruit vitamin C, total soluble sugars,
lycopene and firmness contents, meanwhile decreased titratable acidity and
weight loss contents. Foliar application of potassium thiosulfate at 0.2 and/or
0.4 % enhanced fruit vitamin C, total soluble sugars, lycopene and firmness