云南农业大学学报（自然科学）2017，Vol.32Issue(5)：756-761,6.DOI:10.16211/j.issn.1004-390X(n).2017.05.002
60Co-γ射线对无芒雀麦种子的辐照效应
Effect of 60 Co-γ Ray Irradiation on Brome Seed
摘要
Abstract
[Purpose] Our aim was to investigate the effect of 60Co-γ-ray irradiation on to brome seed,and the effects of different doses of 6o Co-γ-ray radiation on seed germination and early seedling growth were studied.[Method] The seeds of brome were irradiated by different doses (50,100,150,200,250,300 Gy) of 60Co-γ-rays.[Results] The germination rate,germination potential and germination index of different radiation doses were inhibited in a certain extent,and 150-300 Gy groups showed significant difference comparcd with the control group.The vigor index,seedling height,root length and fresh weight was first increased and then decreased tend.When the radiation dose was 50 Gy,the determination of each index was the largest.With the increase of radiation dose,the inhibition effect of each index was enhanced,as compared with those in control group.The effect of different radiation doses on the dry weight of shoots was enhanced with the increase of the radiation dose,and 150-300 Gy groups showed significant difference compared with the control group.The effect of low dose radiation on seedling emergence rate and seedling height was promoted.The increase of dose,the inhibition effect was enhanced,and the high dose radiation completely inhibited the germination rate of seeds.According to effect of radiation dose on seed germination and seedling emergence rate,half lethal dose was 100-150 Gy confirmed.[Conclusion] In the range of 50-100 Gy,60Co-γray irradiation could promote the activity,emergence and growth of brome,and in the range of 150-300 Gy it inhibited,and the inhibition was gradually enhanced.关键词
无芒雀麦/60Co-γ射线/辐照效应/萌发特性/幼苗生长Key words
brome/60Co-γ-ray irradiation/irradiation effect/germination/seedling growth分类
农业科技引用本文复制引用
李波,李祥莉,赵宇佳,马赫..60Co-γ射线对无芒雀麦种子的辐照效应[J].云南农业大学学报（自然科学）,2017,32(5):756-761,6.基金项目
黑龙江省应用技术研究与开发计划重大项目(GA15B105-5) （GA15B105-5）
齐齐哈尔市科学技术计划项目(NYGG-201518). （NYGG-201518）
