柿种质资源炭疽病抗性评价及病原菌分离鉴定
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西北农林科技大学

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国家自然科学基金面上项目(32272672);农业农村部农作物种质资源保护与利用专项(19221880)


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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    摘要:

    依托国家柿种质资源圃,观察记载了柿炭疽病主要发病部位及症状表型,并对479份常见柿资源材料的炭疽病抗性进行评价。结果表明,柿炭疽病原菌主要浸染嫩枝、果实、叶片及萼片。通过对柿枝条及果实炭疽病表型的田间调查,将479份常见柿资源材料分为高抗,抗病,中抗,感病,高感五种抗性等级,其中高抗和抗病种质分别有66和35份(占比分别为13.8%和7.3%),代表种质分别有‘郧阳火柿’和‘黄边小鸡心’等;中抗种质有119种(24.8%),如‘富有’、‘次郎’等;感病及高感种质分别有209和50份(占比分别为43.6%和10.4%),代表种质分别为‘富平尖柿’和‘骏河’等。从叶片、枝条、萼片、果实中分离出病原菌,综合菌落、菌丝、孢子形态特征及多基因序列比对,发现其为哈锐炭疽病原菌(Colletotrichum horii)。

    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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  • 收稿日期:2023-01-10
  • 最后修改日期:2023-02-03
  • 录用日期:2023-02-15
  • 在线发布日期: 2023-02-23
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