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当前位置: 首页 > 文章 > ~(60)Coγ辐射对桂花种子发芽及幼苗生长的影响 北方园艺 2016 (11) 74-77
Position: Home > Articles > Effect of ~(60)Coγ-ray Irradiation on Germination Rate of Seed and Seedling Growth of Osmanthus fragrans Northern Horticulture 2016 (11) 74-77

~(60)Coγ辐射对桂花种子发芽及幼苗生长的影响

作  者：
廖美兰;周修任;王华新;杜铃
单  位：
广西林业科学研究院;河南科技学院生命科技学院;广西壮族自治区林业科学研究院
关键词：
60Coγ射线;桂花;发芽;幼苗生长
摘  要：
以籽银桂种子为试材,用不同剂量的~(60)Coγ射线辐射,研究了不同辐照量对种子发芽率和幼苗生长的影响。结果表明:辐射处理能抑制桂花种子发芽,剂量越高发芽率越低;低剂量、辐射时间较短对桂花幼苗侧根数量、长度的生长有一定促进作用;综合考虑~(60)Coγ辐射对桂花种子发芽率、根系、苗高、地径等苗期生物学性状的影响,初步断定辐照量为100Gy、辐照率为5Gy·min~(-1)、辐射时间为20min的处理对桂花种子的影响较小,而辐照量为300Gy、辐照率为1Gy·min~(-1)、辐射时间为300min的处理对桂花种子的影响较大。
译  名：
Effect of ~(60)Coγ-ray Irradiation on Germination Rate of Seed and Seedling Growth of Osmanthus fragrans
作  者：
LIAO Meilan;ZHOU Xiuren;WANG Huaxin;DU Ling;Guangxi Forestry Research Institute;College of Life Sciences,Henan Institute of Science and Technology;
关键词：
60Coγ?ray;;Osmanthus fragrans;;germination;;seedling growth
摘  要：
Taking Osmanthus fragrans 'Ziyingui' as material,the seeds of Osmanthus fragrans were irradiated at different doses of ~(60)Coγ-ray,and the effects of radiation on the germination rate and seedling growth were observed.The results showed that the radiation could inhibit the seed germination of Osmanthus fragrans,the higher the dose,the lower the germination rate.Radiation at low doses and short time promoted the number and length of lateral root growth of seedling;based on comprehensive consideration of the effects of radiation on the biological characteristics of the seedling stage,such as the germination rate,seedling height and ground diameter of Osmanthus fragrans.Preliminary conclusion was that the effect of the irradiation dosage of 100 Gy,rate of 5Gy·min~(-1) and duration of 20 minutes on the seed was small,however,the effect of the irradiation dosage of 300 Gy,rate of 1Gy·min~(-1) and duration of 300 minutes on the seeds of Osmanthus fragrans was relatively large.

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