^(60)Coγ射线对印度谷螟的辐射遗传效应  

EFFECTS OF ^(60)Co IRRADIATION ON THE GENETICS OF INDIAN MEAL MOTH

作　　者：杨长举[1] 刘淦明[1] 邓望喜[1] 杨志慧[1] 胡建芳[1] 

机构地区：[1]华中农业大学植保系,武汉430070

出　　处：《核农学报》1993年第2期88-92,共5页Journal of Nuclear Agricultural Sciences

摘　　要：用^(60)Coγ射线1、3、5、7、10 krad辐照4～5日龄的印度谷螟雄蛹,当辐照剂量为1～7krad时,被辐照蛹都能羽化,但10krad辐照的,羽化率仅40％。用1、3 krad辐照,成虫畸形率低,且对雄成虫交配能力影响较小,但用7、10 krad辐照,成虫畸形率分别为60％、100％,只有30％～50％的成虫能进行交配。1、3、5 Krad辐照雄蛹,F_1代卵孵化率分别比对照降低25.5％、21.1％、39.4％,F_2代卵的孵化率分别比对照降低56.6％、80.8％、74.0％。这可能是遗传不育现象。1、5、7 krad辐照的,诱导出了成虫翅透明的突变品系(透明型)。该突变品系对研究印度谷螟的部分遗传学及遗传防治有重要意义。4-5 days old male pupae of Indian meal moth,Plodia interpunctella Hubner were irradiated with 1,3,5,7 and 10 krad of 60Co γ-ray The male moths developed from treated pupae and their F1 generation were put together with normal female moths for copulation separately.The genetic effects of irradiation was studied and the results showed that the effects of irradiation were significant,which related to the irradiation dosage,on both parental and filial generations.Only 40% of the pupae was emerged,when they were irradiated at 10 krad.The effects on deformation rates,survival rates,copulation abilities,fecundities,hatching rates and genetic sterilities varied with different irradiation dosage treatment.With consideration of the total irradiation effect,dosage lower than 5 krad is desirable for inducing the sterility of adults and sex chain recessive lethal gene.With 1,5 and 7 krad of irradiation,a mutant of P.interpunctella with transparent wings was induced,which provides a marking feature in control of Indian meal moth by sex chain recessive lethal gene.

关 键 词：印度谷螟 辐照 遗传效应 

分 类 号：S477.4[农业科学—农业昆虫与害虫防治]