ZHAO Yun-long,LI Chao-chan,CHEN Xun.Effect of 60Co-γ Radiation on the Dwarfing Mechanism of Rhododendron decorum[J].Northern Horticulture,2012,36(19):48-50.
60Co-γ射线辐射对大白杜鹃的矮化效应
- Title:
- Effect of 60Co-γ Radiation on the Dwarfing Mechanism of Rhododendron decorum
- 文章编号:
- 1001-0009（2012）19-0048-03
- Keywords:
- Rhododendron decorum; 60Coγ-ray; endogenous hormones
- 分类号:
- S 685.21
- 文献标志码:
- A
- 摘要:
- 研究了不同剂量的60Co-γ射线辐射对大白杜鹃生长特性、叶片气孔特征及内源激素含量变化的影响，利用酶联免疫吸附测定法（ELISA）测定幼苗内源激素含量。结果表明：60Co-γ射线辐射对大白杜鹃幼苗的生长有不同程度的抑制作用，在20～60 Gy范围内，辐射处理的苗高低于对照；辐射后叶片的气孔密度、大小与对照有显著差异，气孔开放面积减小；辐射处理后吲哚乙酸(IAA)、赤霉素(GA3)、玉米素核苷(ZR)含量降低，脱落酸(ABA)含量增加，较高水平的ABA含量有利于植株的矮化。
- Abstract:
- The effects of different levels of 60Coγ-ray radiation on the growth,stomata characteristics and endogenous hormones of Rhododendron decorum were studied,the changes of endogenous hormones in seedlings were determined by ELISA.The results showed that 60Coγ-ray radiation had different degrees of inhibition on the seedling growth of Rhododendron decorum,seedlings height radiated was lower than control in the rang of 40~60 Gy;the stomatal density，size of radiated leaves were significant differences with the control，and the stomatal opening area was reduced.The contents of IAA,GA3 and ZR were promoted while ABA was inhibited under the treatments of 60Coγ-ray radiation，the higher content of ABA were good for the plants dwarfing.
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备注/Memo
第一作者简介：赵云龙（1971-），男，在读博士，研究方向为森林培育及种苗繁育推广。E-mail:zhaoyunlonggy@163.com.