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《Journal of Shenyang Agricultural University》 1986-03
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Studis on Black-Fleck Disease of Ginseng Ⅰ.Survey of Yield Reduction,Pathogenic Fungus and Incidence Pattern of the Disease

Wang Chongren;Yusan Wu;Pu Zhongsen;Liu Geren;Chang Chunhua Shenyang Agricultural University Medieine Company of Fengchen District State Ginseng and Deer Farm in Huanren District  
The black-fleck disease of ginseng may reduce ,the yeild of the plant's roots by 40~160%; in severe cases, as much as ten times or even more. The name of black-fleck disease of ginseng (Alternaria panax whetz) was originally given to a disease that attacks American ginseng. However, the conidia of this fungus in Liaoning Province are appreciably larger than the American isolates. We inoculated 29 weed species with this fungus but could find no other host on the experimental farm. The starting temperature for the germination of the conidia was 1℃; the optimum temperature was 20°~25℃. The highest germination rate of conidium was found in ginseng leaf sap 1% sugar solution and dew under saturated humidity, the lowest, in distilled water. Solution of soil extract showed strong inhibition to the germination of conidia. The conidia were the cause of infection, Germinating spores invade the plant through epidermis, with an in incubation period of 24~48 hours. Conidia are produced 3~6 days after inoculation, and this process can repeat in the same infected region. In one square centimeter of leaf there can be as many as 4, 107~51, 120 spores. Overwintering diseased leaves can also produce conidia and cause iufection. The conidium has no dormant peroad, it can not injure woody stems. The black-fleck disease is an epidemic disease, which is restricted to small areas. The conidium is large in size, with limited bouyancy, Which hampers its transmission by air. The amount of pathogens present in the field is positively correlated with the incidence of the disease, The climatic conditions in Liaoning Province makes this region an area of frequent occurrence of the disease.
【Fund】: 省科委课题
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【References】
Chinese Journal Full-text Database 6 Hits
1 Liu Tingting;Jiang Ting;Li Chunlei;Ren Yueying;College of Chinese Medicinal Materials, Jilin Agricultural University;;Effects of Alternarsa panax whetz. on physiology index in Panax ginseng[J];人参研究;2014-02
2 HU Jun-jie;JIN Yi-zhu;School of Plant Science,Jilin Agricultural Science and Technology University;;Effect of Different Carbon and Nitrogen Sources on the Growth of Lettuce Carpospores[J];北方园艺;2014-01
3 JIN Yan(College of Forestry,Beihua University,Jilin,Jilin 132013);Effects of Different Carbon and Nitrogen Sources on Phyllosticta chlorospora McAlp of Prunus armeniaca L.[J];北方园艺;2013-07
4 FAN Wen-zhong1,LI Jin2,GAO Yu-fang1(1.Jilin Agricultural and Technical College,Jilin 132101,Jilin,China;2.Nanjing University of Chinese Medicine,Nanjing 210046,China);Effects of Different Carbon and Nitrogen Sources on the Growth of Four Altenaria Species[J];湖北农业科学;2012-09
5 FAN Wen-zhong1,ZHANG Xiao-xiang2,LIU Shu-yan3(1.Jilin Agricultural Science and Technology College,Jilin 132101,China;2.Jilin Academy of Agricultural Sciences,Jilin 132101,China;3.Jilin Agricultural University,Changchun 130118,China);Influence of Different Temperatures on Peony Alternaria sp.[J];河南农业科学;2012-03
6 FAN Wen-zhong1,AN Ke-ying1,ZHANG Xiao-xiang2,YU Yang1(1.Jilin Agricultutal and Technical College,Jilin,Jilin 132101;2.Academy of Agricultural Sciences of Jilin city,Jilin,Jilin 132101);Influence on the Growth of Paeonia suffruticosa Alternaria Leaf Spot in Different Carbon and Nitrogen Sources[J];北方园艺;2011-17
【Co-references】
Chinese Journal Full-text Database 4 Hits
1 FAN Wen-zhong et al(Jilin Agricultural Science and Technology College,Jilin,Jilin 132101);Study on the Biological Characteristics of Bipolaris carbonum Wilson[J];安徽农业科学;2011-27
2 Yu Sijia Zhang Zhuoshuang(Beijing Bolanical Garden)Lei Zengpu(Korest Resources college, BFU)Fei Yuzhen(Beijing Agricultural University);The Preliminary Study of Integrated Management of Major Diseases of Tree Peony and Peony in Beijing Area[J];北京林业大学学报;1993-02
3 Zhao Yuefeng Zhu Guixiang Wang Shu Wu Lianju Yang Yijun(Special Wild Economic Animal and Plant Research Institute,CAAS);STUDIES ON THE INTEGRATED CONTROL OF GINSENG BLACK SPOT (ALTERNARIA PANAX WHETZ) IN CHINA[J];植物保护学报;1990-02
4 Wang Chongren;Yusan Wu;Pu Zhongsen;Liu Geren;Chang Chunhua Shenyang Agricultural University Medieine Company of Fengchen District State Ginseng and Deer Farm in Huanren District;Studis on Black-Fleck Disease of Ginseng Ⅰ.Survey of Yield Reduction,Pathogenic Fungus and Incidence Pattern of the Disease[J];沈阳农业大学学报;1986-03
【Secondary References】
Chinese Journal Full-text Database 3 Hits
1 CHI Yang;LI Sheng;WEI Shu-qin;Jilin Agricultural Science and Technology College;;The Influence on the Growth of Hyphae of Root Rot Disease of Aster tataricus L.f.in Different Carbon and Nitrogen Sources[J];湖北农业科学;2015-20
2 LU Ning-hai;WU Li-min;LANG Jian-feng;HUO Yun-feng;SHI Hong-li;SHI Ming-wang;College of Resources and Environment Science, Henan Institute of Science and Technology;;Study on forming conditions of sclerotia in Rhizoctonia Cerealis[J];广东农业科学;2014-24
3 XIAO Zhong-jiu;LI Xiao-xia;YUE Fei;School of Life Sciences/Key Laboratory of Regional Characteristic for Conservation and Utilization of Plant Resource in Chishui River Basin,Zunyi Normal College;;Effects of Temperature on Sclerotium rolfsii in Various Growing Areas of Atractylodes macrocephala in Guizhou Province[J];湖北农业科学;2013-16
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