This study was carried out in AL Swaida nursery during 2009 and 2010
seasons to study effect of time and grafting high are on the growth strength of
apple cultivars: Golden delicious، Stark rimson, Starking delicious. Results
showed that Golden de
licious preponderated on the other cultivars in diameter
average (9.06 mm) at 3cm above the grafting area (5cm above soil level). The
study also confirmed that Starking delicious showed significant superiority(p
<0.05) in term of growth strength on the other two cultivars when grafting was
carried at 5cm and 20cm above soil level and the best of leaf area (2862،89cm2)
was observed at 20 cm above the soil level when grafting took place in 31 of
August.
This study was conducted for two successive seasons 2010 and 2011 in the
vine nursery in the governorate of Homs/Syria to evaluate the degree of
grafting success between the two partners to create graft combinations in early
stage of grafting and
to select the most compatible rootstock for our local
studied cultivars. Three grapevines of local cultivars (Halawani, Baladi and
Bayadi) were grafted on four different American rootstocks (Ru140, B41,
Fercal and SO4) using bench grafting by omega machine.
Grape Vitis Vinifera L. var. "Baladi" was fumigated with acetic acid at two
concentrations 75 and 100 %, during two successive seasons 2008/2009, to study
their effect comparing of sulfur dioxide pads and control. However, Sulfur
dioxide pads were
packed in 40 μm polyethylene bags thickness at two
concentrations 1 and 1.5 g/ kg fruit. All treatments were stored at 0 ± 1 Cº and
90-95% RH for three months, in cooling units of pome and vine research
department in Swaida. Chemical and physical properties were assessed every
15 days intervals, and in every time shelf life was measured for three days at
room temperature and calculated as total loss %. Acetic acid treatment effected
as well as or better than sulfur dioxide pads during cold storage. Which, acetic
acid fumigation decreased weight loss %, decay % and berry shatter %,
moreover, berry adherence strength (g) and berry firmness (kg/cm2) were
increased, but T.S.S %, total acidity % and sugars % have not significant
differences comparing to sulfur dioxide fumigation and control. In addition to
that, the application of acetic acid increased shelf life in days by decreasing
total loss %; also this treatment improved some sensory properties and was
satisfied for consumer demand.
Random Amplified Polymorphic DNA (RAPD) was used to evaluate genetic
diversity among 11 Yemeny pomegranate types. Samples were collected in 2004
from three main regions: east, middle and north of the country (Rada, Hada
and Saada). PCR amplificati
on of pomogranate DNA with 30 random primers
generated 1013 bands, 118 of them were polymorphic 11.5%. Results showed
that the genetic diversity within the tested types was limited. Similarity values
ranged between 59 –96 % with a mean of 79 %. Statistical analysis showed
that the types can be divided into two clusters: cluster 1 with Orkobi and
Mellies types found in the Hada region; cluster 2 includes nine types belonging
to the Saada and Radaa regions .High similarity (90–96%) was obtained with
Khazemy, Liessy 1, Liessy 2, Taefi, Ahmer and Balady types. Whereas, some
types could be considerd as separate cultivars due to their high genetic
diversity such as, Orkoby and Mellies (Hada region) in addition to Bohssom,
Sommaty and Liessy 3 in the Saada region.
Semi-wooden cuttings of two - jujuba cultivars were vegetitirely propagated
under greenhouse conditions, by using different concentrations of Indole
butyric acid (IBA), at Hanadi Research Station, Lattakia.
The rooting percentage reached 71.3% aft
er two months for the Ziziphus
jujube mill, and 83.3% for the Ziziphus jujube tayan tsizao, when they were
treated with 4000 mg/L of (IBA) for five seconds while the rooting percentage
was zero for the non-treated cuttings (Control) .
Study was conducted in five locations as the important areas for
pomegranate cultivation and production in Yemen, during the period (15/1–
15/8/2004). Eight accessions of local pomegranate were used in this study:
Taefi, Orkobi, Mellies–Hada, Khaz
emy, Sommaty, Kodary, Chiny and Mellies–
Raudha in addition to the wild pomegranate type (Socotria). The
morphological characters were determined for leaves, flowers,fruits and seeds.
The chemical analysis for juice was also assessed. Maximum rate for fruit
weight was 527.3 gm for Kodary accession, whereas fruit Juic varied between
49.5–63.2%, while peel / fruit was varied between15% in Taefi and 35.9 % in
Chiny, whereas the peel thickness varied between 1.5–4.2 mm. The Scotria was
found to be evergreen, and flowers around the year. Kazemy accession gave
higher fruits number/tree with rate 246.7. The greatest rate of T.S.S and
Vitamin C were 18.57% and 11.12 mg respectively for Chiny accession, and the
highest content of organic acids in these accessions was 0.54 % for Taefi.
This study was carried out on three rootstocks of Crataegus monogyna Jacq.
With one seed containing fruit C.oxycantha L. with three seeds as well as C.
azaraolus Borkh, to identify the best method of Crataegus propagation.
The hardwood cuttings of
C.azarolus Borkh rooted in a IBA solution (4ooo
ppm)showed the highest rooting percentage 20% when grown in sand as well as
peat moss containing fermented arganic manure media.
In this research, we have studied the effects of some summer pruning at the
mid June and Juli, in addition to the common periodical winter pruning during
February.
Both studies were done to evaluate calcium concentration of fruits, quality
and yi
eld the apearance of physiological disorders during the storage and
fruits. Experiments were conducted on 8 year apple trees of Starking Delicious
and Golden Delicious, which are sensiitve to laek of calcium and as a result
caused bitter-pit as an important physiological disorder on apple fruits.
Summer pruning of apple trees at mid june increases their content of
calcium and their colors, also decreases physiological disorder, weight loss
during storage, without affecting the annual yield of trees.
Accorrding to the attained results, we recommend the farmers of apple trees
to follow summer pruning, because of its benefits on improving the condition of
trees and achieving the balance between vegetative and generative growth, and
reduced the alternate Summer pruning. Also improve the quality of fruits, their
storability and their resistance for some physiological disorders during storage.
تأثير مواعيد وارتفاع منطقة التطعيم في قوة نمو بعض أصناف التفاح - غولدن ديليشيس , ستارك ريمسون , ستاركنغ ديليشيس
