INFLUENCE OF MULTIPLE BIOCHEMICAL COMPOUNDS ON RESISTANCE OF PEANUT PLANT TO RUST

Based on experiments of biochenllcal changes in peanut plants(Arach is hypogaes)before and after rust(Puccinia arachidis)infection,the relationships between multiple biochemical com- pounds and rust resistance was analyho by using quantitative correlation method.Aller rust infection,changes of inducing sugars in peanut plants are highbcorrelated to disease resist-ance.Some free amino aclds,such as serine,leucine.methionine,isoleucine and arginine,are correlated to rust asistance at certain periods after infhoon.In healthy peanut plants,the ac- tivity of polyphenol oxidase,the amounts of threonine,serine,isoleucine and phenylalanine were highly correlated to disease resistance.