Post harvest infestation of some Egyptian barley varieties with Trogoderma granarium everts

Abstract: Two types of Egyptian barley grain varieties were screened to post harvest insect infestation by Khapra beetle, Trogodernra granarium adults and larvae under laboratory conditions of 25- 34 °C and 40- 75 % RH.. The two types were: four old covered varieties (Giza 123, Giz.a 124, Giza 126 and Giza 2000) and three naked varieties (Giza 129, Giza 130 and Giza 131). Parameters of the evaluating the varietal susceptibility were progeny number, developmental period, growth and susceptibility indices, weight loss (%), damage (%) and grain viability (%). Infestation with five adult pairs and 10 pairs was done to samples of 10 g and 40 g weight respectively. Also, larval infestation to 20 g samples was investigated. Results showed significant differences in the tested parameters. With all weight levels, the naked varieties were more susceptible to T. granarium than the covered ones. Naked varieties were non-significantly different in the values of growth index and the same was found in covered varieties. At 10 gm samples, Giza 130 and Giza 129 were the most susceptible, while Giza 2000 was the least susceptible. Insect growth was of significantly shorter duration in the naked varieties and was significantly longer in the covered varieties. Also, more progeny number emerged from all naked varieties. The grain pericarp was found as strong physical barrier, since it increased adult mortality (%) and so reduced both oviposition period and larval development
Publication year 2005
Pages 477-484
Availability location معهد بحوث وقاية النباتات
Availability number
Organization Name
City مشتهر
serial title حوليات العلوم الزراعية بمشتهر
ISSN 1110-0419
Author(s) from ARC
Agris Categories Protection of plants - General aspects
AGROVOC
TERMS		 Barley. Infestation. Trogoderma granarium.
Publication Type Journal
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