切花菊耐热性鉴定方法研究  

Methods of Identification of Thermotolerance of Cutting Chrysanthemum

作　　者：杨丽[1,2] 杨际双[3] 

机构地区：[1]河北农业大学园林与旅游学院,河北保定071001 [2]河北省隆亿工业有限公司,河北高碑店074000 [3]河北农业大学园艺学院,河北保定071001

出　　处：《西北林学院学报》2010年第3期32-35,共4页Journal of Northwest Forestry University

基　　金：河北农业大学留学回国人员科研启动基金(2004-897)

摘　　要：以8个切花菊品种为材料,通过对离体叶片进行50℃高温胁迫后,采用电导法、电阻抗图谱法测定电导率、电阻,并对大田栽培植株进行田间高温胁迫试验,比较品种间的耐热性。结果表明:电导法测得的50℃直接相对电导率、修正相对电导率和电阻抗图谱法测得的胞外电阻在品种间有明显差异,但与田间高温胁迫法测定的热害指数不完全一致。电导法和电阻抗图谱法都可以作为测定切花菊耐热性的方法,但需要结合田间耐热性观察。Leaves of eight cutting chrysanthemum cultivars were treated under 50℃,electric conductivity and resistance were measured using conductivity and electrical impedance spectloscopy（EIS）.The results showed that the relative electrolytic leakage at 50℃,modified relatively electrolytic leakage and extracellular resistance were significantly different among cultivars.The plants were treated at high temperature by plastic shed,the heat injury indices were different from above in some cultivars.These results indicated that both of conductivity and EIS methods could be used as identification methods,but be necessary to conjunct with observation under heat stress in the filed identification of heat tolerance of cutting chrysanthemum cultivars.

关 键 词：切花菊 耐热性 电导法 电阻抗图谱法 热害指数 

分 类 号：S682.110.1[农业科学—观赏园艺]