高能X射线对十二齿小蠹成虫的影响初报  

Effect of 9MeV X-rays irradiation on the development and propagation of Ips sexdentatus

作　　者：王新[1] 刘志群 王跃进[1] 詹国平[1] 胡明 李柏树[1] 徐亮[1] 

机构地区：[1]中国检验检疫科学研究院北京,100029 [2]河北省邢台市林业局 [3]清华同方威视技术股份有限公司

出　　处：《植物检疫》2011年第3期28-31,共4页Plant Quarantine

基　　金：整车进境原木检疫辐照处理技术研究(2002IK-017);口岸入侵物种除害处理新技术(2006BAD08A16)

摘　　要：采自樟子松原木上的十二齿小蠹（Ips sexdentatus Boerner）越冬代和当年新生代成虫在人工饲料上进行短暂饲养后，分别使用9MeV高能X射线辐照处理，剂量为40、60、80、100、120、140和160Gy，辐照成虫在油松木段发育和繁殖的结果表明：40～160Gy辐照可影响成虫的发育和繁殖能力；100％阻止越冬代和当年新生代成虫繁殖产生具有危害能力幼虫的最低吸收剂量分别为80Gy和140Gy，表明当年新生代成虫的辐照耐受性再强．并可初步确定十二齿小蠹成出的不育剂量为140Gy．The overwinter and summer developed adults of six-toothed bark beetle, Ips sexdentatus Boerner, which was collected from the barks of Mongolia Scotch Pine and reared in artificial diet for several days, were irra- diated by 9MeV X -rays with the dose of 40, 60, 80, 100, 120, 140 and 160Gy, respectively. The irradiated adults were reared on the logs of Chinese Pine until the emergency of F1 adults, the results of the development and propagation of irradiated adults shows that the development and propagation of the six - toothed bark beetle was significantly affected by irradiation at the dose of 40 - 160Gy, and the sterile dose, setting the criterion as there is no infectious larvae developed from the irradiated adults, is 80Gy for overwinter adults and 140Gy for summer de- veloped adults, respectively. Thus, the summer developed adult is apparently more radio -resistance than over- winter adults, and the dose of 140Gv may be set as the sterile dose.

关 键 词：十二齿小蠹 辐照 X射线 

分 类 号：S763[农业科学—森林保护学]