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)
212015Population fluctuations of Icerya seychellarum (Westwood) on mulberry trees in Egypt.A Helmi ; A. Neama; A. Abd-Elhamed; G. H. Mohamed; A. A. E. Abbas; A. A. Tharwat
222016Threshold of Development and Thermal Constant for Different Stages of the Seychelles Fluted scale, Icerya seychellarum (Westwood).Ashraf Helmi 
232016Susceptibility of certain tomato cultivars to infestation with Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) in relation to leaflet trichomes. Egypt.Darbain, S; Azza, K. Emam; Ashraf Helmi ; Sami S. El- Badawy; S. Moussa
242016Fingerprinting of Leafhoppers on Medicinal and Aromatic Plants in Egypt Using ISSRs.Ashraf Helmi ; A. Sharaf; E. Heba
252016Susceptibility of certain tomato cultivars to infestation with Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) in relation to leaflet trichomes.Ashraf Helmi ; Darbain, S.; Azza, K. Emam; Sami S. El- Badawy; S. Moussa
261-Mar-2016Biochemical and Ultrastructural Changes of Some Tomato Cultivars after Infestation with Aphis gossypii Glover (Hemiptera: Aphididae) at Qalyubiyah, EgyptAshraf Helmi ; Mohamed, Heba Ibrahim
271-Nov-2016Genetic differentiating Aphis fabae and Aphis craccivora (Hemiptera: Sternorranycha: Aphididae) populations in Egypt using mitochondrial COIAshraf Helmi ; Sharaf, Abdoallah 
282017Repellency Effect of Some Biochemical Extracts of Castor Bean Leaf on Two Sap-Sucking Insect Pests.Ashraf Helmi ; Attia, A. sahar
292017Identification And Quantification Of Allelochemicals Contain In Certain Tomato Cultivars By GC- MS TechniqueA.K. sobeiha ; Ashraf Helmi ; A. Helmi; K. W. Mahmoud
302018Survey of the Soft scale insects, Coccidae (Hemiptera: Coccoidea) and their parasitoids on some ornamental plants in Egypt.Ashraf Helmi ; Abbas, A. A. E.; G. H. Mohamed and; N. A. Abd-El Hamed; A. A. Tharwat
312019Aphids on Medicinal and Aromatic Plants in Egypt (Hemiptera: Aphididae).Ashraf Helmi ; Mahmoud E. R.; Dahroug S M A; M. Hewidy
322019Some ecological aspects on the Mango Shield Scale, Milviscutulus mangiferae (Green) (Hemiptera: Coccidae) on Laurus nobilis L. trees at Giza, Egypt. Egypt Acad.A. Helmi ; Abbas, A. A. E.; G. H. Mohamed; N. A. Abd-El Hamed; A. A. Tharwat
332019Aphids on Medicinal and Aromatic Plants in Egypt (Hemiptera: Aphididae). J.A. Helmi ; Mahmoud E. R.; Dahroug S M A; M. Hewidy
341-Sep-2020Identification of some Egyptian leafhopper species (Hemiptera: Cicadellidae) using DNA barcodingIbrahim, Heba E.; Ashraf Helmi ; Sharaf, Abdoallah ; Emam, Azza 
352022Biological aspects, lower developmental threshold and thermal requirements of Cotton seed bug, Oxycarenus hyalinipennis (Costa)El-Taher A. Sh.; M. S. Abdel-Wahed; Ashraf Helmi ; H. F. Dahi