关键词: 玉米小斑病菌T小种, 粗毒素（培养滤液）, 苯丙氨酸解氨酶, 过氧化物酶, 丙二醛, 诱导抗性

Abstract: Resistance to maize southern leaf spot disease was induced by the low concentration of filtration of Bipolaris maydis race T cultivation in an experiment. The nuclear neterogeny corn C103 was used as the test material .The lesion area on the leaves was significant difference by connalysis The lesion areas on pretreated leaves were (0.3±0.05)－(0.9±0.5) mm2, but that in the control were （23.1±8.7）mm2. At the same time, the changes of peroxidase, phenylalanine, ammonialyase, malondialdenvde activities were determined. During 0－96 h inspection, phenylalanine, ammonialyase activities increased by 64.2%, peroxidase activities increased by 41.2%, but the malondialdenvde content decreased by 29.7% compared with the control. It seems that the low concentration of filftration of B. maydis race T cultivation itself can be used as an elicitor to enhance the induced resistance.

Key words: Bipolaris maydis race T, Filtration of cultivation, PAL, POD, MDA, Induced resistance