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《Journal of Northwest Forestry University》 2016-01
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Induction of Systemic Resistance against Jujube Fruit Shrinking Disease with Three Resistant Inducers

YUE Zi-shi;SONG Xiao-bin;WANG Fang;ZHANG Dan;College of Forestry,Northwest A&F University;  
In order to improve the ability of resisting jujube fruit shrinking disease,resistance inducers of salicylic acid,oxalic acid and chitosan with different concentrations were sprayed on the leaves of susceptible cultivar-"Qiyuexian".The controlling effects were detected by incidence of disease.Indices such as the content of soluble protein,peroxidase(POD),catalase(CAT),and phenyanine ammonialyase(PAl)were measured.The results showed that all the resistant inducers could increase the resistance of jujube,and applying potassium permanganate and chitosan had showing outstanding effect.Based on the above,500mg·L~(-1) chitosan,3mmol·L~(-1) salicylic acid,1mmol·L~(-1) oxalic acid were selected out,which were more effective in controlling jujube fruit shrinking disease.For the susceptible cultivar-Qiyuexian,soluble protein,POD and CAT were in the higher levels than those of the control.Meanwhile,the activity of these enzymes could reach the maximum activities at the third day.The results showed that these physiological indices had the obvious positive correlation with the resistance of the jujube.Defense enzymes POD,CAT,PAL,soluble protein played important roles in inducing resistance to the jujube fruit shrinking disease of susceptible cultivars.
【Fund】: 林业公益性行业科研专项(201104017)
【CateGory Index】: S436.65
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