Ashraf Helmi

ashraf_helm@agr.asu.edu.eg
Department of Plant Protection - Agriculture
Interests: Entomology, Taxonomy, Identification, Classification, Fingerprinting, Barcoding, Aleyrodidae, Aphididae,
Internal ID: rp13191
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Ashraf Helmi
 
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Publications

Results 21-35 of 35 (Search time: 0.0 seconds).

Issue DateTitleAuthor(s)
211-Jun-2011Molecular fingerprinting of certain cereal aphids in Egypt (Hemiptera: Sternorrhyncha: Aphididae) using RAPD and ISSRs markersA Helmi ; Khafaga, A. F.
221-Jan-2011Host-associated population variations of bemisia tabaci (genn.) (hemiptera: Sternorrhyncha: Aleyrodidae) characterized with random dna markersAshraf Helmi 
232011Field Evaluation Of Some Insecticides Against Olive Psyllid, Euphyllura Straminea On Olive Trees In Ismailia Governorate (Homoptera: Psylloidea, Aphalaridae). Egypt.A. Helmi ; Youssef, A. S.; Amin A.H. ; E. A. Elwan
242011Population dynamics and control of Bemisia tabaci (Genn.) on some vegetable plants under protected cultivation at Giza Governorate.A Helmi ; Esmail-Samar, S.; S. El-Refai; F. A. Aly
252011Host plants-Associated population variations of Bemisia tabaci (Genn.) (Hemiptera: Sternorrhyncha: Aleyrodidae) characterized with Random DNA Markers.A Helmi 
262011Molecular fingerprinting of eleven cereal aphids in Egypt (Hemiptera: Sternorrhyncha: Aphididae) using RAPD and ISSRs markers.A Helmi ; A. F. Khafaga
272010Isozymes electrophoretic variations among hosts and localities populations of Bemisia tabaci (Genn.) (Hemiptera: Aleyrodidae) in Egypt.A Helmi 
282009Influence of three sap-sucking insect pests' infestations on essential oil of sweet marjoram (Origanum majorana L.).A Helmi ; Amaar-Mona. I; K. Emam-Azza; M. F. A. H. Hegab; M. A. Sidky Mahassen
292009Identification of apterous viviparous of cereal aphids in Egypt (Hemiptera: Sternorrhyncha: Aphididae).A Helmi ; M. M. El Fatih
302009Genetic fingerprint of fifteen whitefly species in Egypt. (Hemiptera: Aleyrodidae).Ashraf Helmi ; Amin, A. H.; Azza K. Emam 
312008Ecological Studies on Sugar beet Insects at Kafr El- Sheikh Governorate, Egypt.A Helmi ; Amin, A. H.; S. A. El-Serwy
322006Variations among populations of Bemisia tabaci (Genn.) in Egypt. (Hemiptera: St⁸ernorrhyncha: Aleyrodidae).Ashraf Helmi ; Rashed, M. A; A. Abdel Bary-Abeer
332005Some ecological aspects of two whitefly species infesting Arab Jasmine shrubs in Egypt. (Hemiptera: Sternorrhyncha: Alyrodidae).A Helmi 
342002Ecological studies on the citrus whitefly Dialeurodes citri (Ashmead) [Hemiptera: Aleyrodidae].Ashraf Helmi ; A. H. Amin; M. E. Foda; Azza, K. Emam
351997Amin, A. H.; A. K. Emam and A. Helmi (1997). A species of the genus Aleurotuberculatus on citrus trees in Egypt.A Helmi ; Amin A. H.; A. K. Emam; Aleyrodidar