CAJ | 학술논문

目的探讨如何提高大丽花的抗病性．方法以大丽花为实验材料，使用水杨酸（SA）叶面喷施处理方式，分析在水杨酸处理其植株叶片后，随时间变化，不同浓度的水杨酸对PPO活性的影响，为研究大丽花的抗病性提供实验依据．结果本品种大丽花的PPO最适pH为5．8；SA对大丽花PPO有一定的影响．用低于0．5mmol／L的SA处理后的大丽花，PPO活性无显著影响；1～2mmol／L的SA对PPO活性起促进作用，并且于24h达到高峰；而3mmol／L的SA对PPO活性起明显的抑制作用．而用以上几组浓度的SA处理大丽花后，PPO活性在48～60h之后逐渐恢复到未处理状态．结论外源SA对大丽花进行处理后对PPO活性在一定时间内有诱导作用．
목적탐토여하제고대려화적항병성．방법이대려화위실험재료，사용수양산（SA）협면분시처리방식，분석재수양산처리기식주협편후，수시간변화，불동농도적수양산대PPO활성적영향，위연구대려화적항병성제공실험의거．결과본품충대려화적PPO최괄pH위5．8；SA대대려화PPO유일정적영향．용저우0．5mmol／L적SA처리후적대려화，PPO활성무현저영향；1～2mmol／L적SA대PPO활성기촉진작용，병차우24h체도고봉；이3mmol／L적SA대PPO활성기명현적억제작용．이용이상궤조농도적SA처리대려화후，PPO활성재48～60h지후축점회복도미처리상태．결론외원SA대대려화진행처리후대PPO활성재일정시간내유유도작용．
Objective To explore how to improve the disease resistance of Dahlia pinnata. Method The salicylic acid （SA） was sprayed on the Dahlia pinnata and then,the effect of SA on Poly Phenol Oxidase （PPO） activity with the change of the time and at different concentrations of SA was analyzed to provide an experimental evidence for the study on the disease resistance of Dahlia pinnata. Results The optimum pH value for this variety of Dahlia pinnata was 5.8, SA had certain effect on PPO activity, SA less than 0.05 mmol/L had no significant effect on PPO activity, PPO activity could be promoted by 1 - 2 mmol/L SA and the PPO activity could reach a peak value after 24 hours ,while 3mmol/L SA exerted significant inhibitory effect on PPO activity. After being treated respectively with above concentrations of SA, PPO activity restored gradually to the level before the treatment after 48 - 60 h. Conclusion After the treatment of Dahlia pinnata with exogenous SA, PPO activity in Dahlia pinnata could be induced within a certain range of time.