^(60)Co-γ射线对辣椒种子的辐照效应  

Irradiation Effect of ^(60)Co-γ Ray on Pepper Seeds

作　　者：蓬桂华[1] 孙小静[1] 罗泽虎 李兴龙 PENG Guihua SUN Xiaojing LUO Zehu LI Xinglong(Guizhou Pepper Research Institute, Guizhou 550009, China Dushan Rural Work Bureau, Dushan 558200, China)

机构地区：[1]贵州省辣椒研究所,贵州贵阳550009 [2]独山县农村工作局,贵州独山558200

出　　处：《蔬菜》2017年第10期14-18,共5页Vegetables

基　　金：贵州省农业攻关项目(黔科合NY[2014]3040);贵州省农科院专项([2012]007号)

摘　　要：分别采用剂量为50、100、150、200、300、400、500 Gy(2015年)和200、300、400、500 Gy(2016年)的^(60)Co-γ射线对辣椒种子进行辐照,并研究其对辣椒种子发芽动态、成苗率及辣椒幼苗形态指标的影响。结果表明:高辐照剂量可显著抑制辣椒种子的发芽指数、成苗率,降低辣椒幼苗的茎高、茎粗、主根长度、叶长和叶宽,但对辣椒种子的发芽率影响不大。不同品种间辐照剂量效应不完全相同,经过二次曲线拟合确定,湄潭团籽辐照适宜剂量为450 Gy,罗甸朝天椒辐照适宜剂量为350 Gy。The effects of different irradiation doses of 60Co- γ ray （50, 100, 150, 200, 300, 400, 500 Gy in 2015; 200, 300, 400, 500 Gy in 2016） on the seed germination dynamics, seedling rate and morphological indexes of pepper seedlings were studied. The results showed that high dose could significantly inhibit germination index, seedling rate and decrease the stem height, stem diameter, root length, leaf length and leaf width. However, it had little effect on the germination rate. Irradiation doses effects among different varieties were not exactly the same. The appropriate doses for radiation on Meitan seed was 450 Gy and Luodian seed was 350 Gy based on quadratic curve fitting.

关 键 词：辣椒 60Co-γ射线 辐照效应 

分 类 号：S641.3[农业科学—蔬菜学]