Abstract:

The objective of this study was to prevent the damage on tobacco and other storage from Liposcelis paeta. The irradiation effects of electronic beam on different development stages of Liposcelis paeta in tobacco were studied. The results showed that the egg was the most sensitive stage to electron beam irradiation, and the adult was the most resistant stage. The hatching of egg could be stopped by 100Gy irradiation. The LD50 of the adult and nymphae at 21days after irradiation was 179.1 Gy and 130.9 Gy, respectively. When receiving a dose 300 Gy, the adult and nymphae wold die out within 63 days and 49 days, respectively. And no new generation was found after 300 Gy irradiation for adults. Thus, the dose of 300 Gy irradiation is recommended for the control of Liposcelis paeta Pearman.