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EL-SAYED, A., BISHARA, S., NOAMAN, M., EL-DEFRAWI, G. (1995). SURVEY AND FIELD SCREENING OF APHIDS AFFECTING BARLEY. Egyptian Journal of Agricultural Research, 73(4), 943-954. doi: 10.21608/ejar.1995.442876
ABDEL-FATAH A. EL-SAYED; SADEK I. BISHARA; MAHER M. NOAMAN; GODA M. EL-DEFRAWI. "SURVEY AND FIELD SCREENING OF APHIDS AFFECTING BARLEY". Egyptian Journal of Agricultural Research, 73, 4, 1995, 943-954. doi: 10.21608/ejar.1995.442876
EL-SAYED, A., BISHARA, S., NOAMAN, M., EL-DEFRAWI, G. (1995). 'SURVEY AND FIELD SCREENING OF APHIDS AFFECTING BARLEY', Egyptian Journal of Agricultural Research, 73(4), pp. 943-954. doi: 10.21608/ejar.1995.442876
EL-SAYED, A., BISHARA, S., NOAMAN, M., EL-DEFRAWI, G. SURVEY AND FIELD SCREENING OF APHIDS AFFECTING BARLEY. Egyptian Journal of Agricultural Research, 1995; 73(4): 943-954. doi: 10.21608/ejar.1995.442876

SURVEY AND FIELD SCREENING OF APHIDS AFFECTING BARLEY

Article 30, Volume 73, Issue 4, December 1995, Page 943-954  XML PDF (3.89 MB)
Document Type: Original Article
DOI: 10.21608/ejar.1995.442876
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Authors
ABDEL-FATAH A. EL-SAYED1; SADEK I. BISHARA2; MAHER M. NOAMAN1; GODA M. EL-DEFRAWI2
1Field Crops Research Institute, Agricultural Research Centre, Giza, Egypt
2Plant Protection Research Institute, Agricultural Research Centre, Dokki, Giza, Egypt
Abstract
Survey of aphids infesting barley grown in nothwestern coastal region of Egyp, carried-out in March 1989 revealed the existence of the corn leaf aphid Rhopalosiphum maidis (Fitch) as the dominant cereal aph‌id. Three areas were surveyed being Nubaria, Borg El-Arab, and Marsa Matrouh. The highest aphid population existed in El-Kasr locality west of Marsa Matrouh. Field screening of 158 barley genotypes for aphid resistance was carried out in three localities being Nubaria, El-Kasr (northwestern coast), and Mallawi (Middle Egypt). Levels of aphid infestion and damage rate were evaluated according to 5-category scale. In Nubaria, aphid infestation was very low; only 45 entries out of 158 that harboured 1-3 aphid colonies per row. In EI-Kasr locality, most genotypes were infested with aphids but 10 entries were aphid-free and can be considered as sources of resis-tance. In Mallawi, barley was exposed to high infestation with four spe-cies of aphids namely Rhopalosiphum padi, R, maidis, Schizaphis grami-num, and Sitobion avenae. Ten entries were however, fairly resistant/ tolerant, exhibiting the lowest rate of infestation.
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