温度对蒙古扁桃及柄扁桃呼吸代谢的影响

目的]研究温度对蒙古扁桃及柄扁桃呼吸代谢的影响。方法]用多池差示扫描量热仪(CSC4100)分别在10、15、20、25、30、35℃下测量蒙古扁桃和柄扁桃的呼吸速率和新陈代谢过程的热量散失率。在此基础上,根据Lee.D.Hansen等的生长-呼吸数学模型,计算不同温度下植物种的呼吸底物碳转化效率及其特殊生长速率,从而预测适宜其生长的温度范围和最佳温度值。结果]结果表明,在所测定的范围内,随温度变化蒙古扁桃和柄扁桃的底物碳转化效率为常数,分别为0.55、0.57;适宜蒙古扁桃生长的温度范围为14~34℃,最适生长温度为25℃,适宜柄扁桃生长的温度范围为13~33℃,最适生长温度为24℃。结论]为不同地区引种和栽培蒙古扁桃和柄扁桃提供植物生理学方面的依据,使树种资源得到更合理的开发和利用,为今后的生产应用提供理论参考。

Effects of Environmental Temperature on Respiration Metabolism of Amygdalus mongolica Maxim.and Amygdalus pedunculata Pall.

Objective] The research aimed to study the effects of environmental temperature on respiration metasbolism of Amygdalus mongolica Maxim.and Amygdalus pedunculata Pall.Method] Metabolic heat(Rq) and respiratory rates(Rco2) of Amygdalus mongolica Maxim.and Amygdalus pedunculata Pall.were determined by CSC4100 at 10,15,20,25,30 and 35 ℃.Based on Lee.D.Hansen growth-respiration model,the substrate carbon conversion efficiency and the specific growth rates under different temperatures were calculated.Then,the adapted growth temperature scopes and the optimal growth temperatures were predicted.Result] The results showed that the substrate carbon conversion efficiency of Amygdalus mongolica Maxim.and Amygdalus pedunculata Pall.was all a constant,was 0.55,0.57 respectively.The adapted growth temperature scope of Amygdalus mongolica Maxim.and Amygdalus pedunculata Pall.was 14-24,13-33 ℃ respectively.The optimal growth temperature of Amygdalus mongolica Maxim.and Amygdalus pedunculata Pall.was 25,24 ℃.Conclusion] The study can provide the plant physiological basis for the introduction and cultivation of Amygdalus mongolica Maxim.and Amygdalus pedunculata Pall.in different districts,to develop and utilize reasonably the plant species resources,and provide theoretical reference for production and application in future.