^(60)Co-γ射线辐照对水稻陈种子活力复苏的影响  

Effect of Irradiation by Light Intensity of ^(60)Co-γ Ray on Old Rice Seed Vigour

作　　者：吴茂力[1] 刘勇强[1] 张子龙[2] 

机构地区：[1]四川省原子能研究院,四川成都610066 [2]北京中医药大学中药学院,北京100102

出　　处：《西南农业学报》2010年第4期1013-1016,共4页Southwest China Journal of Agricultural Sciences

基　　金：四川省科技厅"十一五"水稻育种攻关项目

摘　　要：用不同剂量60Co-γ射线辐照处理3种不同胞质籼稻陈种子,结果表明:供试辐照剂量对水稻陈种子产生了刺激作用,随着处理剂量的加大,供试陈种子的发芽势、发芽率和发芽指数呈先升高,后又逐渐下降的趋势;其中发芽势和发芽指数在200 Gy时达到最大值,而发芽率则在100 Gy时为最大值;冈优725辐照处理发芽指标变动趋势与处理变动总趋势一致,而Ⅱ优718和辐优838辐照处理发芽指标变动趋势与总趋势有异;试验的发芽曲线显示,剂量达400 Gy时辐照处理对种子萌芽有明显抑制作用。Three types of old hsien rice seed were irradiated by different light intensity of 60Coγ ray.The trial results showed that 60Co-γ ray irradiation had some effect to the vigour of old rice seed.The germination vigour,rate and index of the testing old rice seed increased firstly and decreased gradually with the intensity of the 60Co-γ ray increasing.The germinating vigour and index of the old rice seed reached the max.value when ray intensity was 200 Gy,and the germinating rate reached the max value when ray intensity was 100 Gy.The material Gangyou 725 was accordance with the normal trends,but IIyou718 and Fuyou838 was not according to the normal trends.The germination curve showed that old rice seed germination was obviously inhibited when ray intensity was 400 Gy.

关 键 词：辐照处理 水稻 陈种子 发芽率 

分 类 号：S511[农业科学—作物学]