Biological Characteristics of the Pathogen for Stem Blight of Elaeocarpus
To identify the biological characteristics of Pseudocryphonectria elaeocarpicola,the pathogen for stem blight of Elaeocarpus,and to explain its pathogenicity to Elaeocarpus sylvestris,the biological charac-teristics such as carbon source,nitrogen source,temperature,pH and light exposure of the pathogen were measured by growth rate method.The pathogenicity of the pathogen was studied by inoculating the potted seed-lings by scalding inoculation.The results showed that the optimum carbon source for the growth of the pathogen was soluble starch,lactose and cellulose,the optimum nitrogen source was peptone and yeast extract,the opti-mal pH value was 4,the optimal growth temperature was 30℃,the lethal temperature was 55℃ and the light exposures did not significantly affect the fungal growth.The inoculation experiment results showed that the pathogen was pathogenic to Elaeocarpus sylvestris.
stem blight of ElaeocarpusPseudocryphonectria elaeocarpicolabiological characteristicsElaeocarpus sylvestrispathogenicity
NETL
NSTL
万方数据
