Study On The Control Of Apple Tree Canker By Penicillin

Apple tree canker also called rotten skin disease ,which is one of main diseases of fruit tree plant in north, and its harm is extremely serious. Moreover, the scope is widespread and it exists from the sapling to the senile tree in different degree. Apple tree canker is the main reason of the dead shoot, the dead tree and destroying the garden ,which also blocked the development of the north of fruit tree seriously. The penicillin is one kind of new plant growth regulaors in production. This article mainly elaborated the defense effect of the penicillin against to the apple tree rotten sickness .The main content included: separation, depuration and appraisal of pathogens ; healing effect of the penicillin fluid to scaling the wound of the rotten sickness and the penicillin fluid prevented pathogens infection; the appraisal of pathogens secreting Pectolase and its influence; and the influence of Penicillin fluid to resistance of tree body .1. The germ from the Inner Mongolia agricultural university orchard and the Inner Mongolian gardening demonstration garden was gotten Basing on tan oak heyer's method, then which was known as Cytospora sp.2. Penicillin fluids(12,000 units per Liter)prevented pathogens infection effectively and promoted the wound of healing. healing rate of scaring to sick scar was 43.69%, and the relative preventing effect achieved 77.5% ,the recurring rate of scaring illness scar was only 5%. The rate of disease incidence was3% after penicillin treating tree body then vaccinating pathogens.3. The process of the apple tree rotten sickness'pathogens secreted the massive pectolases in invading parasite . there wasn't inhibitory action to Penicillin fluid against fruit tree rotten sickness pathogens'growth,, even had the promoter action The penicillin fluid also did not have the inhibitory action in the liquid media to the pathogens secreting pectolase, but after spurtoning the sick tree body which suppressed the pectolase activeness effectively, Specially 12,000 units per Liter processing, which reduced the pectolase'activeness 0.18 time to comparison.4. The penicillin fluid at concentrations of 8000,12000 and16000 units per Liter enhanced the activeness of PAL, the content of lignin, activeness of POD, activeness of PPO and content of the RGP. Specially said that 8,000 units per Liter enhanced the activity of PAL, the activeness of POD, the content of HRGP.12,000unit sper Liter. enhanced the content of lignin; 16,000 units per Liter enhanced the activeness of PAL obviously.