Evaluation of Resistance Resources and Identification of Anthracnose in Persimmon
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1.Northwest A&2.F University

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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 were observed and recorded in National Field Genebank for Persimmon. The results showed that the persimmon anthrax pathogen was mainly infected with twigs, fruits, leaves and sepals of persimmon. Based on the anthrax symptoms of persimmon branches and fruit in field, 479 common persimmon germplasms were divided into five resistance levels of highly resistant, resistant, medium resistant, susceptible and highly susceptible. Among which 66 germplasms (13.8%) had high resistance, and the representative varieties are ''Yunyang Huoshi'', etc; 35 germplasms showed the resistance to anthracnose (7.3%), the representative varieties are ''Huangbian Xiaojixin'', etc.; 119 germplasms had medium resistance (24.8%), the representative varieties are ''Fuyu'', ''Jiro'', etc.; 209 germplasms were susceptible (43.6%) , the representative varieties are ''Fuping Jianshi'', etc; highly susceptible varieties have 50 accessions (10.4%), such as ''Suruga'' etc. Pathogenic bacteria were isolated from leaves, branches, sepals 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:February 15,2023
  • Online: February 23,2023
  • Published:
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