Investigation of Resistance Resources and Identification of Anthracnose in Persimmon
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College of Horticulture, Northwest A&F University, Yangling 712100,Shaanxi

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Foundation projects: The National Natural Science Foundation of China (32272672); Special Project of Conservation and Utilization of Crop Germplasm Resources Supported by the Ministry of Agriculture and Rural Affairs (19221880)

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    Abstract:

    The main incidence site and symptom phenotype of anthrax disease for 479 common persimmon germplasms were observed and recorded in National Field Genebank for Persimmon. The results showed that the anthrax pathogen mainly infected twigs, fruits, and leaves of persimmon. Based on the disease symptoms of persimmon branches and fruit in the field, 479 accessions were divided into five resistance levels, including highly resistant, resistant, moderate resistant, susceptible, and highly susceptible. Sixty-six germplasms (13.8% of this collection) were highly resistant (representative varieties, e.g. Yunyang Huoshi); 35 germplasms (e.g. Huangbian Xiaojixin) were resistant to anthracnose (7.3%); 119 germplasms (e.g. Fuyu and Jiro) showed moderate resistance (24.8%); 209 germplasms (e.g. Fuping Jianshi) were susceptible (43.6%); 50 accessions (e.g. Suruga) were highly susceptible (10.4%). Pathogenic bacteria were isolated from leaves, branches and fruits. According to the morphological characteristics of colonies, mycelia and spores and the sequence alignment of multiple genes, all of them were identified as Colletotrichum horii.

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History
  • Received:January 10,2023
  • Revised:February 03,2023
  • Adopted:
  • Online: June 13,2023
  • Published: June 14,2023
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