The relative susceptibility of different varieties of wheat to Rhyzopertha dominica (F.)
2002
Mansoor-ul-Hasan (University of Agriculture, Faisalabad (Pakistan). Dept. of Agricultural Entomology) | Bashir, F. | Wakil, W.
The relative susceptibility of five wheat varieties viz., Inqlab-91, Punjab-96, MH-97, Watan and Parwaz-94 to Rhyzopertha dominica (F.), was studied under the laboratory conditions at 30 degree centigrade and 70% relative humidity. The percentage grain damage and weight loss used as an index of susceptibility, indicated that variety Watan suffered significantly comparatively less weight loss (21.62%) and grain damage (34.8%) as compared to rest of the varieties, viz., Inqlab (25.17%; 39.80%), Punjab-96 (26.58%; 39.80%), MH-97 (20.0%; 40.80%) and Parwaz-94 (24.26%; 41.0%). Chemical analysis of the infested grain showed significant differences in the nutrient losses in the test varieties. Variety Watan suffered less loss as compared to other varieties, which were not significantly different from one another. Similarly the results of the free choice experiment did not show significant differences in the preference Rhyzopertha dominica to different wheat varieties.
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