Susceptibility of Cider Apple Accessions to European Canker—Comparison between Evaluations in Field Planted Trees and Rapid Screening Tests
European canker, caused by <i>Neonectria ditissima</i> Bres., is an economically damaging fungal disease of apple. Breeding new cultivars with a high level of resistance to European canker is the main aim of apple breeding programs. Observations of symptoms in naturally infected trees we...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-04-01
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| Series: | Plants |
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| Online Access: | https://www.mdpi.com/2223-7747/11/9/1145 |
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| author | Álvaro Delgado Belén García-Fernández Antonio Gómez-Cortecero Enrique Dapena |
| author_facet | Álvaro Delgado Belén García-Fernández Antonio Gómez-Cortecero Enrique Dapena |
| author_sort | Álvaro Delgado |
| collection | DOAJ |
| description | European canker, caused by <i>Neonectria ditissima</i> Bres., is an economically damaging fungal disease of apple. Breeding new cultivars with a high level of resistance to European canker is the main aim of apple breeding programs. Observations of symptoms in naturally infected trees were carried out in 400 apple accessions in Asturias (north-western Spain). Young and mature field planted trees were assessed under conditions highly conducive for <i>N. ditissima</i> development. The results demonstrated that juvenile trees (4-year-old) barely showed noticeable symptoms whereas a wide variability in the levels of resistance among accession was observed in mature trees (14-year-old). Around 28% of the locally maintained collection resulted to be highly resistant to this disease in the region. Field observations on mature trees were also compared to four rapid screening tests based on artificially induced lesions. Spearman correlation analysis using two resistance parameters revealed that none of the methods resulted in similar rankings of cultivar susceptibility as some accessions that were ranked as resistant for a given test turned out to be susceptible in the field. This study might suggest that whilst conventional resistance phenotyping techniques are time-consuming, the outcomes of this approach still seem the preferred option to assess the response to <i>N. ditissima</i> of apple accessions. |
| first_indexed | 2024-03-10T03:48:34Z |
| format | Article |
| id | doaj.art-33bcfc02cc2546bfa6f3cec95217937f |
| institution | Directory Open Access Journal |
| issn | 2223-7747 |
| language | English |
| last_indexed | 2024-03-10T03:48:34Z |
| publishDate | 2022-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Plants |
| spelling | doaj.art-33bcfc02cc2546bfa6f3cec95217937f2023-11-23T09:02:06ZengMDPI AGPlants2223-77472022-04-01119114510.3390/plants11091145Susceptibility of Cider Apple Accessions to European Canker—Comparison between Evaluations in Field Planted Trees and Rapid Screening TestsÁlvaro Delgado0Belén García-Fernández1Antonio Gómez-Cortecero2Enrique Dapena3Servicio Regional de Investigación y Desarrollo Agroalimentario (SERIDA), Apdo.13, E-33300 Villaviciosa, SpainServicio Regional de Investigación y Desarrollo Agroalimentario (SERIDA), Apdo.13, E-33300 Villaviciosa, SpainNIAB, Lawrence Weaver Rd., Cambridge CB3 0LE, UKServicio Regional de Investigación y Desarrollo Agroalimentario (SERIDA), Apdo.13, E-33300 Villaviciosa, SpainEuropean canker, caused by <i>Neonectria ditissima</i> Bres., is an economically damaging fungal disease of apple. Breeding new cultivars with a high level of resistance to European canker is the main aim of apple breeding programs. Observations of symptoms in naturally infected trees were carried out in 400 apple accessions in Asturias (north-western Spain). Young and mature field planted trees were assessed under conditions highly conducive for <i>N. ditissima</i> development. The results demonstrated that juvenile trees (4-year-old) barely showed noticeable symptoms whereas a wide variability in the levels of resistance among accession was observed in mature trees (14-year-old). Around 28% of the locally maintained collection resulted to be highly resistant to this disease in the region. Field observations on mature trees were also compared to four rapid screening tests based on artificially induced lesions. Spearman correlation analysis using two resistance parameters revealed that none of the methods resulted in similar rankings of cultivar susceptibility as some accessions that were ranked as resistant for a given test turned out to be susceptible in the field. This study might suggest that whilst conventional resistance phenotyping techniques are time-consuming, the outcomes of this approach still seem the preferred option to assess the response to <i>N. ditissima</i> of apple accessions.https://www.mdpi.com/2223-7747/11/9/1145<i>Neonectria ditissima</i>field assessmentartificial inoculationslocal cultivarsgermplasm repository |
| spellingShingle | Álvaro Delgado Belén García-Fernández Antonio Gómez-Cortecero Enrique Dapena Susceptibility of Cider Apple Accessions to European Canker—Comparison between Evaluations in Field Planted Trees and Rapid Screening Tests Plants <i>Neonectria ditissima</i> field assessment artificial inoculations local cultivars germplasm repository |
| title | Susceptibility of Cider Apple Accessions to European Canker—Comparison between Evaluations in Field Planted Trees and Rapid Screening Tests |
| title_full | Susceptibility of Cider Apple Accessions to European Canker—Comparison between Evaluations in Field Planted Trees and Rapid Screening Tests |
| title_fullStr | Susceptibility of Cider Apple Accessions to European Canker—Comparison between Evaluations in Field Planted Trees and Rapid Screening Tests |
| title_full_unstemmed | Susceptibility of Cider Apple Accessions to European Canker—Comparison between Evaluations in Field Planted Trees and Rapid Screening Tests |
| title_short | Susceptibility of Cider Apple Accessions to European Canker—Comparison between Evaluations in Field Planted Trees and Rapid Screening Tests |
| title_sort | susceptibility of cider apple accessions to european canker comparison between evaluations in field planted trees and rapid screening tests |
| topic | <i>Neonectria ditissima</i> field assessment artificial inoculations local cultivars germplasm repository |
| url | https://www.mdpi.com/2223-7747/11/9/1145 |
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