LIAO Meilan,ZHOU Xiuren,WANG Huaxin,et al.Effect of 60Coγ-ray Irradiation on Germination Rate of Seed and Seedling Growth of Osmanthus fragrans[J].Northern Horticulture,2016,40(11):74-77.[doi:10.11937/bfyy.201611020]
60Coγ辐射对桂花种子发芽及幼苗生长的影响
- Title:
- Effect of 60Coγ-ray Irradiation on Germination Rate of Seed and Seedling Growth of Osmanthus fragrans
- Keywords:
- 60Coγ-ray; Osmanthus fragrans; germination; seedling growth
- 文献标志码:
- A
- 摘要:
- 以籽银桂种子为试材，用不同剂量的60Coγ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60Coγ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100 Gy、辐照率为5 Gy?min-1、辐射时间为20 min的处理对桂花种子的影响较小，而辐照量为300 Gy、辐照率为1 Gy?min-1、辐射时间为300 min的处理对桂花种子的影响较大。
- Abstract:
- Taking Osmanthus fragrans ‘Ziyingui’ as material，the seeds of Osmanthus fragrans were irradiated at different doses of 60Coγ-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 5 Gy?min-1 and duration of 20 minutes on the seed was small，however，the effect of the irradiation dosage of 300 Gy，rate of 1 Gy?min-1 and duration of 300 minutes on the seeds of Osmanthus fragrans was relatively large.
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备注/Memo
第一作者简介：廖美兰（1966-），女，广西鹿寨人，本科，高级工程师，现主要从事园林花卉培育技术等研究工作。E-mail：liaomeilan66@163.com.基金项目：广西林业科技资助项目（桂林科字[2010]第1号）。