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Egyptian Journal of Agricultural Research
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GHARIB, M. (2004). SCREENING SUSCEPTIBILITY/RESISTANCE OF SOME WHEAT GRAIN VARIETIES TO RH1ZOPERTHA DOMINICA (F.) AND TROGODERMA GRANARIUM (EVERTS) INFESTATION. Egyptian Journal of Agricultural Research, 82(1), 139-148. doi: 10.21608/ejar.2004.256589
MAHROS S. A. GHARIB. "SCREENING SUSCEPTIBILITY/RESISTANCE OF SOME WHEAT GRAIN VARIETIES TO RH1ZOPERTHA DOMINICA (F.) AND TROGODERMA GRANARIUM (EVERTS) INFESTATION". Egyptian Journal of Agricultural Research, 82, 1, 2004, 139-148. doi: 10.21608/ejar.2004.256589
GHARIB, M. (2004). 'SCREENING SUSCEPTIBILITY/RESISTANCE OF SOME WHEAT GRAIN VARIETIES TO RH1ZOPERTHA DOMINICA (F.) AND TROGODERMA GRANARIUM (EVERTS) INFESTATION', Egyptian Journal of Agricultural Research, 82(1), pp. 139-148. doi: 10.21608/ejar.2004.256589
GHARIB, M. SCREENING SUSCEPTIBILITY/RESISTANCE OF SOME WHEAT GRAIN VARIETIES TO RH1ZOPERTHA DOMINICA (F.) AND TROGODERMA GRANARIUM (EVERTS) INFESTATION. Egyptian Journal of Agricultural Research, 2004; 82(1): 139-148. doi: 10.21608/ejar.2004.256589

SCREENING SUSCEPTIBILITY/RESISTANCE OF SOME WHEAT GRAIN VARIETIES TO RH1ZOPERTHA DOMINICA (F.) AND TROGODERMA GRANARIUM (EVERTS) INFESTATION

Article 13, Volume 82, Issue 1, March 2004, Page 139-148  XML PDF (2.58 MB)
Document Type: Original Article
DOI: 10.21608/ejar.2004.256589
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Author
MAHROS S. A. GHARIB
Plant Protection Research Institute, Agricultural Research Center, Dokki, Giza, Egypt
Abstract
The present work aims to study the susceptibility of thirteen Egyptian wheat grain varieties to infestation by the lesser grain borer, Rhizopertha dominica F. and khapra beetle, Trogoderma granarium Ev­erts. Basis of evaluation were growth index. percent weight loss, damage and germination (%). The obtained results showed significant differences among the tested varieties. In respect to R.dominica eight varieties: Sak­ha 69. BenlSwalf 1, Sohag 3. Gemmiza 7, Giza 164, Soahag 2, Sids 1 and Beni Swaif 3 were found to be the least susceptible based on growth in­dex. The other varieties were found to be the most susceptible (Giza167, Sohag Duruml, Giza 163, Giza 168, Sakha 93). Germination (%) and weight loss (%) were 59% and 31.1% in the least susceptible variety (Sakha 69) respectively, while reached 6.0% and 42% in the most susceptible variety (Sakha 93). In case of T.granarium, eleven va­rieties were the most susceptible (Gemmiza 7, Sohag 3, Sohag Durum1, Beni Swaif 3, Giza 168, Sakha 69, Beni Swaif 1, Sohag 2. Sids 1, Giza 164, Giza 167) varieties based on values of the susceptibility index. The other two varieties (Sakha 93 and Giza 163) were the least susceptible or moderately resistant and differ significantly. The study showed that none of the 13 varieties was completely immune to both pests since all the varieties reacted significantly with insect growth. Further studies are still needed to explain factors and reasons of resistance or susceptibility. Other complementary methods of control for safe grain storage are also nopetael
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