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Chinese Journal of Biological Control ›› 2021, Vol. 37 ›› Issue (3): 564-574.DOI: 10.16409/j.cnki.2095-039x.2021.02.011

• RESEARCH REPORTS • Previous Articles    

Isolation and Identification of Main Weed Pathogens in Tea Garden

LU Yuping1, XIAO Wan1, FANG Wanping2, QIANG Sheng1, CHEN Shiguo1   

  1. 1. Weed Research Laboratory, Nanjing Agricultural University, Nanjing 210095, China;
    2. Tea Science Research Institute, Nanjing Agricultural University, Nanjing 210095, China
  • Received:2020-08-12 Published:2021-06-16

Abstract: To screen out plant pathogens with strong pathogenicity to weeds and high safety to tea plant, the diseased weeds were collected from 16 tea gardens in Jiangsu, Zhejiang and Anhui provinces. Forty-four plant pathogens were isolated, thereinto, 10 fungus strains with high pathogenicity were selected and further tested by Koch's postulates. Based on morphological characteristics and sequence analysis of rDNA−ITS genes, these ten stains were identified as Bipolaris setariae, Alternaria alternata, Curvularia intermedia and C. lunata, Fusarium proliferatum and F. equiseti, Corynespora cassiicola and Didymella bellidis, belonging to 8 different species of pathogenic fungi. Considering crop safety, five candidate strains, F. equiseti, F. proliferatum, B. setariae, C. intermedia and C. lunata, exhibit the good potential for development into bioherbicides in weed control in tea garden.

Key words: tea plant, pathogen, isolation and identification, bioherbicide

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