Studies On Mix Up Inductor Of Melon Resistance To Powdery Mildew: Induction Effect

In this paper, two different melon"Yindi"and"Kalakesai"were treated by three group inductor at 3-leaf stage, inoculated with Sphaerotheca fuliginea, effect on induced effects of the basis of resistence and induction stage, the results are following:1.BTH+SA,SA+ SiO₂ and SiO₂ are significant reduction in the incidence of powdery mildew of melon, BTH+SA is first and SA+SiO₂ is second.In order to test effect on inductor control disease, BTH+SA,SA+ SiO₂ were sprayed at anthesis and early flowering and young fruit stage, BTH+SA is best in early flowering; SA+SiO₂ was sprayed twice were best in anthesis and young fruit stage.2.CHI,GLU PAL and SOD of Leaf of treatment and inducement were significant higher than comparison,CAT was significant reduced.The results showed that: BTH+SA,SA+SiO₂ could induce disease resistance of melon plant by improving the body's disease-resistant plant-related activity,and resistance of melon leaves raising activity related with the role of system-induced. SiO₂ could efficiency prevent invade of Sphaerotheca fuliginea but it did not make a change in activity,it showed that SiO₂ play the role if physical barrier.3. Inductor could significant enhance Pn and Gs of two varietal in the process growth and development of melon and it could improve yield and solubility of fruit, the role of resistant varieties was bigger than susceptible. BTH+SA was sprayed in the early flowering was best; SA+SiO₂ was sprayed twice were best in anthesis and young fruit stage.4. To compare different species, Resistant varieties of the compound in response to elicitor-induced as early as in time, intensity than susceptible;...