^60Co-γ射线辐射对云烟85、K326种子活力的影响  

Effect of ^(60)Coγ-Ray Irradiation on Seed Vitality of Yunyan 85 and K326 Tobacco Seeds

作　　者：强继业[1] 许银莲[1] 吴功明[2] 

机构地区：[1]云南农业大学烟草学院,昆明650201 [2]丽水学院物理系,浙江丽水323000

出　　处：《种子》2008年第3期34-37,共4页Seed

基　　金：浙江省教育厅项目(编号:20051364)资助

摘　　要：本试验采用不同的辐射剂量(10Gy、20Gy、30Gy、40Gy、50Gy、60Gy、70Gy、80Gy、90Gy、100Gy、300Gy、600Gy、900Gy、1200Gy)对两个烤烟品种(云烟85、K326)进行辐射处理,它们为2005年的留种。以未辐射的处理作为对照,标记为ck,在26℃条件下进行培养,结果显示:(1)在26℃条件下,10Gy是两个烤烟品种的最适辐射剂量;(2)从最适辐射剂量条件下的两个烤烟品种比较来看,K326的种子活力优于云烟85,两者相比较,发芽势、发芽率在辐射剂量大于600Gy后都开始呈急剧下降趋势。说明两个品种的抗辐射的能力相当。Two flue-cured tobacco cultivar were irradiated by fourteen irradiation doses . The two flue-cured tobacco cuhivars were yunyan 85, K 326, and the irradiation dose included 10 Gy,20 Gy,30 Gy,40 Gy,50 Gy,60 Gy,70 Gy,80 Gy,90 Gy, 100 Gy,300 Gy,600 Gy,900 Gy, 1 200 Gy. These seeds were harvested in 2005. The treatment that was not irradiated was taken as control. All seeds （treatments） germinated respectively at 26 %. The results showed that： （ 1 ） 10 Gy was the fittest irradiation dose for four cultivar at 26 % ; （2） The comparison for cultivar at the fittest irradiation dose showed ： seed vitality of K 326 was better than that of yunyan 85. The energy and rate of germination declined fleetly from above 600 Gy at 26 %. The facts indicated two eultivars had equivalent radiation resisting ability.

关 键 词：Γ射线 辐射 烤烟种子 种子活力 

分 类 号：S572[农业科学—烟草工业]