CHEN Xiaona,GAO Yong,SONG Xiaomin,et al.Effects of Paclobutrazol on Hedysarum mongolicum Under Drought Condition[J].Northern Horticulture,2017,41(10):65-69.[doi:10.11937/bfyy.201710016]
植物延缓剂对杨柴抗旱性的调控作用
- Title:
- Effects of Paclobutrazol on Hedysarum mongolicum Under Drought Condition
- 文献标志码:
- A
- 摘要:
- 以通过盆栽试验获得的一年生杨柴幼苗为试材，利用叶绿荧光参数分析不同浓度多效唑（0、150、300、450、600 mg?L-1）对杨柴幼苗抗旱性的影响，以期筛选出提高杨柴抗旱性的最佳多效唑浓度。结果表明：轻度干旱条件下，150~600 mg?L-1多效唑处理对杨柴的ETR、Yield、Fv/Fm、Fv′/Fm′、Fv/Fo表现为促进作用，且促进作用随多效唑浓度升高先加强后减弱，多效唑浓度过高则会显著抑制qN（P<0.05）。采用隶属函数法对杨柴各项荧光指标进行综合评价，得出300 mg?L-1的多效唑对一年生杨柴幼苗抗旱性的增强效果最佳。
- Abstract:
- Oneyearold Hedysarum mongolicum seedlings were used as material by pot experiment，the effect of different concentrations of paclobutrazol（0 mg?L-1，150 mg?L-1，300 mg?L-1，450 mg? L-1，600 mg?L-1）on chlorophyll fluorescence parameters of Hedysarum mongolicum seedlings under drought resistance was studied.In order to find out the best concentration of paclobutrazol to improve drought resistance of Hedysarum mongolicum.The results showed that qP，ETR，Yield，Fv/Fm，Fv′/Fm′ and Fv/Fo could be increased by paclobutrazol.When paclobutrazol concentration increased，the effectiveness were firstly increased and then decreased.However，qN was significantly inhibited under the high concentration of paclobutrazol（P<0.05）.The membership function values of the seven indexes were calculated by use membership function，The most suitable concentration of paclobutrazol was 300 mg?L-1 to improve drought resistance.
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备注/Memo
第一作者简介：陈晓娜（1994-），女，内蒙古呼伦贝尔人，硕士研究生，研究方向为荒漠化防治。E-mail：775164470@qq.com.责任作者：高永（1962-），男，内蒙古包头人，博士，教授，博士生导师，研究方向为荒漠化防治。E-mail：13948815709@163.com.基金项目：国家林业局948资助项目（2015-4-22）。