2013•Northern HorticultureRequires access
Biological Characteristics of the Pathogen and Fungicides Screening in Laboratory for Schisandra chinensis Brown Leaf Spot Caused by Phoma glomerata
Lina Yang
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Abstract
A new leaf disease on Schisandra chinensis(Turcz.) Baill were observed in commercial fields in the east mountain area of Jilin Province,China.Based on identification of pathogens,biological characteristics of the pathogen were studied.The results showed that the optimum medium was Potato dextrose agar(PDA)+Juice,the optimum carbon and nitrogen sources for colony growth and sporulation were galactose and(NH4)2SO4,the optimum temperature and pH for colony growth and sporulation were 25℃ and 6.0 respectively.The conidial germination was better at pH 7.0 and full illumination or natural light,the conidial failed to germinate if relative humidity was less than 90%,and the lethal temperature for hypha and conidia were 46℃ and 38℃.