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Register a new userIdentification of some species of aphids deployed in bean fields and citrus orchards in Latakia and the possibility of its transfer of local isolate of Cucumber mosaic virus
تعريف بعض أنواع المــنّ المنتشرة في حقول الفول و بساتين الحمضيات في اللاذقية و إمكانية نقلها لعزلة محلية لفيروس مُوزاييك الخيار
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يهدف البحث إلى تعريف بعض أنواع حشرات المنّ على العوائل النباتية، و اختبار إمكانية نقلها لعزلةٍ محليةٍ لفيروس موزاييك الخيار. تمّ تعريف نوعين من حشرات المنّ، هما: منّ الفول الأسود Aphis fabae في حقول الفول و منّ القطن Aphis gossypii في بساتين الحمضيات، و ذلك اعتماداً على مفاتيح تصنيفية متخصصة. و أثبتت العدوى الراجعة و الاختبار الحيوي باستخدام النباتات الدالة (التبغ Nicotiana tabacum و الرمرام Chenopodium quinoa) نقل كلّ من منّ الفول الأسود و منّ القطن للعزلة المحلية لفيروس موزاييك الخيار.
The research aims to Identify some species of aphids on plant families, and test the possibility of transfer to the local isolate of Cucumber mosaic virus. Two species of aphids in bean fields and citrus orchards have been defined, namely: Black bean aphid Aphis fabae and Cotton aphid Aphis gossypii, respectively, depending on the specialized classification keys. The infection proved vital feedback and testing the function using plants: Nicotiana tabacum and Chenopodium quinoa transfer each of the A. fabae and A. gossypii local isolate of Cucumber mosaic virus.
References used
ABU FOUL, K. S. J. Studies on some viruses effecting pepper plants in northern Egypt. Ph. D. Thesis, Faculty of Agriculture, Alexandria University, Egypt, 1989, 184
BADAMI, R. S. Changes in the Transmissibility by aphids of a strain of Cucumber mosaic virus. Annals of Applied Biology. 1958, 46, (4) : 554–562
BARBAGALLO, S. and I. PATTI. The citrus aphids: Behaviour, damages and integrated control. Pages: 67-75. In: Integrated Pest Control In Citrus Orchards. R. Cavalloro and E. Di Martino (Editors). Proceeding Experts’ Meeting 26th – 29th March (1985). Acireale, Italy, 1986
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This research was conducted in laboratory of Nematology in the Center of Scientific
Agricultural Research in Lattakia, to detection of Entomopathogenic Nematodes (EPNs) in
Citrus Orchards soils in Lattakia governorate.
A total of 66 composite soil
samples were collected from Citrus orchards during (2016-
2017). Entomopathogenic nematodes (EPNs) were recovered from soil samples by the
insect baiting technique, using seventh instar larvae of the Greater wax moth Galleria
mellonella (Lepidoptera: Pyralidae). Infective juveniles (IJs) were collected from G.
mellonella cadavers using the method of White (1927).
EPN isolates were identified based on morphometric methods. Eight isolates were
identified as Heterorhabditis bacteriophora Poinar 1976 (Ord. Rhabditida: Fam.
Heterorhabditidae) .
Positive soil samples ratio was 12.12% of total samples, where EPNs isolates were
extracted from regions (Al-Bassa, Al-Magreet, Al-Shamia, Gio, Al-Kharnoba, Al-Sorsokia,
Fideo, Borj Al-Qasab)0 The soil textures of the EPNs positive samples were (sandy loam,
silt loam, loamy sand, loamy clay sand, clay) with ( pH 6.34- :0.5) and (1.99- 4.82) g\100g
organic content. The electrical conductivity of the nematode positive soils varied from 0.33
to 0.82 ds/m.
This study was conducted in the village of Almetrkyah located in the southern
coastal plain of Lattakia city during 2014. In order to study the effect of Cucumber mosaic
virus on growth and development of two varieties of peppers, hybrid ESTAR F1 H
(sweet
pepper) and Demer(spicy pepper). This study included eight treatments, four treatments
for each variety. Plants were mechanically inoculated in three different stages, preflowering
bloom, flowering andpost-flowering stages each beside its non-inoculated
control. The result should that, the appearance of Cucumber mosaic virus symptoms on
infected sweet hybrid, was within four days before its appearance on inoculated spicy
variety,symptoms were leaf crinkle, leaf deformation, yellow patches and plant stunting.
Inoculated plants showed reduction in number of leaves, number of branches and yield.
Plants in pre flowering bloom stage were more effected by virus infection in both
varieties. Meannumber of leaves per plant of ESTAR F1 H hybrid were 130 in pre
flowering bloom stage compared with 170 leaf/plant in the control treatment. Mean
number of branches per plant of ESTAR F1 H hybrid were 43,4 branch/plant in pre
flowering bloom stage compared with 56,7branch/plant in the control treatment. Total
pepper production per plant was 700,8g in infected plants in preflowering bloom stage
compared with 1267,5g/plant in ESTAR F1 H hybrid control. Results of Demer variety
take the same results of ESTAR F1 H hybrid. The effect of virus infection on pepper plants
were reduced when inoculation were done during flowering stage and post-flowering stage,
differences were significant between inoculated plants in both varieties.
شملت هذه الدراسة حصر و تعريف 80 نوعاً و تحت نوع واحد من الأعشاب تنتمي لـ 64 جنساً موزعة على 28 فصيلة ضمن ثلاثة بساتين للحمضيات في منطقة اللاذقية على مدار أربعة فصول خلال الفترة الواقعة من أيلول 2014 حتى آب 2015. تم حساب كل من الكثافة و الكثافة النسبي
ة و التردد و التردد النسبي لكل نوع عشبي لمعرفة تركيب الغطاء العشبي و أهمية الأنواع المنتشرة. كانت نسبة الأنواع التابعة لأحاديات الفلقة 24.69%، أما التابعة لثنائيات الفلقة كانت نسبتها 75.31%، و شكلت الأنواع الحولية نسبة كبيرة بلغت 85.19% و المعمرة 13.58% و ثنائية الحول 1.23%. دلت النتائج أن أكثر أنواع الأعشاب الموجودة في بساتين الحمضيات تتبع الفصيلة الكلئية (Poaceae)، حيث تضمنت 17 نوعاً و تحت نوع واحد، و تلتها الفصيلة الفولية (Fabaceae (9 أنواع و الفصيلة النجمية (Asteraceae (8 أنواع و الفصيلة الحليبية (Euphorbiaceae (7 أنواع. وكان أكثر أنواع أحادية الفلقة كثافةً نوع السعد Cyperus rotundus L. بكثافة بلغت 20.2 نبات/م2 خلال فصل الصيف، أما أكثر أعشاب ثنائيات الفلقة كثافةً عشبة حشيشة الزئبق Mercurialis annua L. بكثافة59.27 نبات/م2 خلال فصل الخريف. و من أهم نتائج الدراسة أيضا إضافة 3 أنواع، و تحت نوع واحد من الفصيلة الكلئية (Poaceae) للفلورا السورية.
Results of the study revealed the presence of four aphid species which
spread in the wheat fields of Daraa during 2013.
They are: Schizaphis graminum (Rondani), Rhopalosiphum padi (L),
Rhopalosiphum maidis (Fitch) and Sitobion avenae (Fab).
S. gr
aminum was most widely amounted rate (48%), followed by specie
of R. padi (% 20) then R. maidis (% 16.8), and finally specie of S.
avenae rate (14.9%).
The appearance time of the different stages insect (nymphs, winged
insects, winged) for its specie and their arriving time to the peak were
identify.
This study was conducted during the period from 10/9/2016 to 9/9/2017 in Demsarkho
orchards area (Lattakia) on the west coast of Syrian Arab Republic. The study aimed to
identificate "Syrphidae" in this area. Samples were collected by yellow dishes
in weekly
rate. A total of 341 Syrphid flies were collected and they belong to 15 species form 10
genera. The most abundant species was Sphaerophoria scripta (relative abundance
33.43%), followed by Episyrphus balteatus (20.53%), then Melanostoma mellinum
(14.66%).
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