[01] Muhammad Sarwar, Nuclear Institute of Agriculture, Tando Jam, Sindh, Pakistan.

During present investigation, 12 different advanced local wheat Triticum aestivum germplasms including 10 lines and 2 varieties were screened against red flour beetle Tribolium castaneum (Herbst) (Coleoptera: Tenebrionidae) to check their resistance. The healthy seeds of each line/ variety were in dry preserved form placed in small glass containers. The pest damage symptom developed on seeds was rated by counting percent infestation, percent weight losses, frass weight, number of T. castaneum emerged and percent germination of particular wheat line. It was evident from the results that all the wheat germplasms were susceptible to T. Castaneum, but NIA-MB-02, NIA-MB-03 and NIA-MN-01 were highly susceptible than the entire germplasms due to holding maximum damage of red flour beetle. The relative performance of NIA-MB-01, NIA-MN-08 and Khirman was pointed out as tolerant to the pest infestation. These results are being employed for developing improved wheat varieties and to control the effect of various factors that perturb the grain productivity to create pest resistance in susceptible varieties. From this study, the results imply that stored grain executives should be aware of the potential differences in susceptibility and tolerance attributable to wheat varieties to prevent the development of the pests.

Wheat, Tribolium, Varietals Susceptibility, Storage Losses, Grain

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