^(60)Co γ射线辐照对桃小食心虫卵发育的影响初报  

The primary investigation on the development of the eggs of Peach Fruit Moth after irradiated by Colbot-60 γ-rays

作　　者：詹国平[1] 李洋[2] 李天秀[1] 王跃进[1] 李柏树[1] 覃怀莉 

机构地区：[1]中国检验检疫科学研究院,北京100029 [2]山东农业大学 [3]清华同方威视技术股份有限公司

出　　处：《植物检疫》2013年第1期15-19,共5页Plant Quarantine

基　　金：国际原子能机构协调研究项目(15633)

摘　　要：用60Coγ射线对桃小食心虫(Carposina sasakii Matsmura)3日龄和5日龄卵进行辐照处理,辐照卵在苹果上发育的结果表明:20～140 Gy的亚致死剂量对卵的孵化率没有显著影响,辐照卵发育为幼虫的脱果率和成虫的羽化率均随着剂量的提高而显著降低;100 Gy和140 Gy不能完全阻止3、5日龄卵发育为老熟幼虫;经60Gy辐照处理,3、5日龄卵羽化率差异显著,机率值分析也表明3日龄卵的敏感性大于5日龄卵。机率值分析预测出阻止5日龄卵发育出现成虫的剂量为161.4 Gy,5日龄卵为成熟卵,其辐照耐受性最强,建议将160 Gy作为桃小食心虫卵检疫辐照处理的最低吸收剂量。The 3 and 5 day-old eggs of the Peach Fruit Moth（Carposina sasakii Matsumura） were irradiated with Colbot-60 γ-rays and then reared in Red Fuji Apple fruits in laboratory.The hatching rates of all the eggs irradiated with the sub-lethal doses of 20～140 Gy were not decreased significantly comparing with the untreated eggs,but the numbers of mature larvae and adults developed from these irradiated eggs in apple fruits were decreased significantly as the increase of the dose.Although the emergence of mature larvae were not completely prevented at the dose of 100 Gy for 3 day-old eggs,and 140 Gy for 5 day-old eggs,respectively,there was distinct difference on the rate of eclosion between 3 and 5 day-old eggs when irradiated at the dose of 60 Gy.The results from the analysis of ANOVA and Probit on the difference of eclosion rate also showed that the 3 day-old eggs are more radiosensitive than 5 day-old eggs.Additionally,the Probit analysis with PoloPlus（LeOra Software） was performed to predict the minimum dose for preventing the emergence of adult from irradiated eggs,and the ED_99.9968 is 161.4Gy for 5 day-old eggs at the confidence of 95% level.As the 5 day-old eggs is the mature eggs and it is the most radio resistant stages among eggs,the dose of 160 Gy may be suggested as the minimum effective dose for quarantine treatment of eggs.

关 键 词：桃小食心虫 卵 辐照 

分 类 号：S41-33[农业科学—植物保护]