International network for natural sciences – research journal
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Quantitative losses in some advanced genotypes of barley incurred by Tribolium castaneum L. (Herbst.)

By: Mudassar Javed, Muhammad Zeeshan Majeed, Abdul Khaliq, Muhammad Arshad, Muhammad Hannan Ahmad, Muhammad Sufyan

Key Words: Tribolium castaneum, Frass weight, Percentage weight loss.

Int. J. Agr. Agri. Res. 8(2), 45-50, February 2016.

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Abstract

The present study was performed to estimate the quantitative losses in different barley varieties against Tribolium castaneum (Herbst) which is commonly known as red flour beetle. Quantitative parameters like damaged grain percentage, frass weight (broken grains debris and insect exuviae), number of adult emergence and percentage weight loss were determined at three different incubation temperatures i.e., 28oC, 32oC and 35oC. Data was compiled through Factorial under Completely Randomized Design (CRD). Results revealed that maximum damaged grains percentage and frass weight production with maximum number of adult emergence occurred in Jou-87 at 32oC, while minimum in the B-09006 at 35oC and 28oC. Maximum percentage weight loss was recorded in susceptible variety Jou-87 and minimum percentage weight loss in resistant variety B-09006 while Jou-83, H-93 and B-09008 showed nearly same response. Present study suggested that barley variety, B-09006 showed comparatively resistance against red flour beetle during storage conditions and should be considered by indigenous barley growers.

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