This research was conducted during 2010-2011 growing seasons on 15 years old
trees of “Washington Navel” variety grafted on Citrus aurantium (sour orange) stock and
planted in the village of “Al-hinnady” in Lattakia. To determine the appropriate pr
eharvest
and post-harvest treatments to get the most production and better quality of fruits.
Orange fruits are characterized at harvesting with physical and sensory
properties determine consumer acceptance and in order to identify these
characteristics and vulnerability storage and irradiation conditions, Valancia
orange fruits were subje
cted to gamma irradiation at doses of 0.0, 0.5, 1.0, and
1.5 kGy using gamma 60Co irradiator facility. Fruits were kept in a refrigerator
for 18 weeks. Results indicated that physical and sensory properties of Valencia
orange fruits were affected by storage time and irradiation. The overall color
differences were increased and the firmness of fruits and skin were decreased.
The used doses of gamma irradiation increased the overall color differences of
fruit skin. Whereas the fruit firmness, and the sensory properties (aroma,
color, test and firmness) of irradiated Valencia orange fruits were decreased.
The research experiment was carried out during the 2007, 2008 and 2009,
seasons on grape variety Al- Helawani (10 years old) to study the effect of
N.P.K. fertilization rates and the triple superphosphate (T.S.P) application
method on some fruits
characters and growth indicators. Three fertilization
N.P.K rates were used, rate 1 (75:25:50) kg/ ha, twofold and fourfold of rate 1,
in three replicates in addition to control. The application of (T.S.P) was on soil
surface and at 30 cm depth, the percent of leaf area, shoot length, the degree of
berry colour, berry firmness were calculated. The results showed a significant
increase of leaf area, shoot length and the Berry colour compared to control.
The third rate was the best for increasing the leaf area and shoot length, while
the first and second rates were increased the colour of Berry. At the same time,
there was a gradual significant decrease in Berry firmness compared to control
when the rate of fertilizer was increased. It was also noted a significant increase
in leaf area (11%) and shoot length (4.5%) in deep T.S.P application compared
to the surface application.
دراسة السلوكية الوراثية لصفة صلابة الثمار في هجن نصف تبادلية من البندورة ( Lycopersicom esculentum Mill )
