Selected Cultivar-Specific Parameters of Wheat Grain as Factors Influencing Intensity of Development of Grain Weevil Sitophilus granarius (L.)

Wheat, the main source of protein in human diet, is a staple food many countries. The yields and technological quality wheat grain depend on both yielding potential properties that allow its safe storage. To large extent, losses during storage are caused by pests. Grains 46 cultivars were used study (samples weighing 20 g each variety 10 replications), which development weevil Sitophilus granarius (L.) (Coleoptera: Curculionidae) was observed (20 insects aged 3–4 days; sex ratio 1:1). laboratory carried out at constant temperature (27 OC) humidity (75% relative humidity). demonstrated physicochemical parameters (hardness, glassiness, flouriness, content protein, sugars, starch, crude fat), cultivar-dependent, can act as regulators weevil. aim to develop recommendations regarding breeding resistant foraging S. could therefore produce for longer storage, distinguish those more sensitive whose should be supplied market quickly. Knowledge resistance or susceptibility individual cereal varieties feeding pests may useful integrated management. Among studied, five with highest lowest identified. inherent tolerance displayed following cultivars: KWS Livius, Bogatka, Speedway, Platin, Julius; contrast, Askalon, Bamberka, Ostroga, Forum, Muszelka proved most sensitive. chemical physical analysis selected revealed significant, positive correlation between intensity weevil, starch fat grain, hardness flouriness.