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1992—1993年用~(60)Co—γ射线3,3.5,4,5,7,15,30和60Krad剂量辐照印度谷螟老龄幼虫,1—2日龄、3—4日龄、5—7日龄蛹,1—3日龄成虫和F_1代3—4日龄卵。研究表明,各虫态对~(60)Co辐照敏感性的顺序依次为:老龄幼虫>蛹>成虫;1—2日龄蛹3—7龄蛹;雌虫>雄虫,用于直接防治,用7—10Krad辐照幼虫和蛹,用30Krad辐照成虫和卵就能达到较好的防治效果。用3—3.5Krad辐照老龄幼虫,F_1代不育率为20.7％—82.3％;用3.5—4Krad辐照1—2日龄蛹,F_1代不育率为35.9％—48％。并且用这些剂量辐照对印度谷螟各虫态生活能力及成虫交配能力影响较小。初步认为,3—4Krad剂量辐照老龄幼虫和1—2日龄蛹较适合于印度谷螟的遗传防治。
In 1992-1993, the larvae of Chilo suppressalis were irradiated with doses of 3, 5, 4, 5, 7, 15, 30 and 60 Krad with ~ (60) Co- - 7-day-old pupae, 1-3 days adult and F-1 generation 3-4 day-old eggs. The results showed that the sensitivities of irradiation to ~ (60) Co were as follows: old larvae> pupae> adults; pupae 1-3 days old at 1-2 days of age; females> males for direct control , Larvae and pupae were irradiated with 7-10 Krad, adults and eggs were irradiated with 30 Krad to achieve better control effect. Irradiation of aged larvae with 3-3.5 Krad showed that the F 1 generation was 20.7% -82.3% sterile. When 3.5-4 Krad irradiated 1-2 day pupae, the F 1 generation was 35.9% -48%. And irradiation with these doses had little effect on the viability and adult mating ability of the Indian rice borers. Preliminary thought, 3-4Krad dose of irradiation larvae and 1-2 days old pupae suitable for Indian Chilo suppressalis genetic control.