Susceptibility of some traditional pear cultivars of Hungarian and foreign origin to the pathogenic bacterium Erwinia amylovora
Fire blight, a disease caused by the bacterium Erwinia amylovora (Burrill) Winslow et al., has been causing serious damage in Hungarian pear plantations since 1996. A prospective control measure could be the use of resistant cultivars. For that purpose ten pear cultivars have been tested under labor...
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| Format: | Article |
| Language: | English |
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University of Debrecen
2004-08-01
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| Series: | International Journal of Horticultural Science |
| Subjects: | |
| Online Access: | https://ojs.lib.unideb.hu/IJHS/article/view/506 |
| _version_ | 1811284030860034048 |
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| author | K. Honty M. Hevesi M. Göndör G. Tóth M. V. Bács-Várkuti A. Ferenczy |
| author_facet | K. Honty M. Hevesi M. Göndör G. Tóth M. V. Bács-Várkuti A. Ferenczy |
| author_sort | K. Honty |
| collection | DOAJ |
| description | Fire blight, a disease caused by the bacterium Erwinia amylovora (Burrill) Winslow et al., has been causing serious damage in Hungarian pear plantations since 1996. A prospective control measure could be the use of resistant cultivars. For that purpose ten pear cultivars have been tested under laboratory and greenhouse conditions for resistance to Erwinia amylovora strains collected in Hungary. Six of these cultivars are Hungarian ones of unknown origin, while four are traditional old varieties. Resistant cultivars should serve as germplasm for future breeding. Inoculations were made with a mixture of different pear isolates of the bacteria collected from various growing regions of Hungary (Ea 21, 23), at a density of 5x108 cells/ml. Susceptibility/resistance has been assessed on the basis of intensity of blight symptoms observed on shoots, flower parts and fruits. Cultivars were assigned to three susceptibility groups (low, moderate and high). Complete resistance was not found among the cultivars tested. The highest level of resistance was found in cultivar 'Kieffer', while the other cultivars displayed either moderate or high susceptibility to infection. |
| first_indexed | 2024-04-13T02:21:35Z |
| format | Article |
| id | doaj.art-eed98d55ff1d41aa84ac2ac78045b13a |
| institution | Directory Open Access Journal |
| issn | 1585-0404 2676-931X |
| language | English |
| last_indexed | 2024-04-13T02:21:35Z |
| publishDate | 2004-08-01 |
| publisher | University of Debrecen |
| record_format | Article |
| series | International Journal of Horticultural Science |
| spelling | doaj.art-eed98d55ff1d41aa84ac2ac78045b13a2022-12-22T03:06:56ZengUniversity of DebrecenInternational Journal of Horticultural Science1585-04042676-931X2004-08-0110310.31421/IJHS/10/3/506Susceptibility of some traditional pear cultivars of Hungarian and foreign origin to the pathogenic bacterium Erwinia amylovoraK. Honty0M. Hevesi1M. Göndör2G. Tóth M.3V. Bács-Várkuti4A. Ferenczy5BUESPA, Faculty of Horticultural Science, 1 Department of Fruit Science, H-I 118 Villányi út 31, Budapest, HungaryBUESPA, Faculty of Horticultural Science, 1 Department of Fruit Science, H-I 118 Villányi út 31, Budapest, HungaryBUESPA, Faculty of Horticultural Science, 1 Department of Fruit Science, H-I 118 Villányi út 31, Budapest, HungaryBUESPA, Faculty of Horticultural Science, 1 Department of Fruit Science, H-I 118 Villányi út 31, Budapest, HungaryBUESPA, Faculty of Horticultural Science, 1 Department of Fruit Science, H-I 118 Villányi út 31, Budapest, HungaryBUESPA, Faculty of Horticultural Science, Department of Mathematics and Informatics, H-I 118 Villányi út 31, Budapest, HungaryFire blight, a disease caused by the bacterium Erwinia amylovora (Burrill) Winslow et al., has been causing serious damage in Hungarian pear plantations since 1996. A prospective control measure could be the use of resistant cultivars. For that purpose ten pear cultivars have been tested under laboratory and greenhouse conditions for resistance to Erwinia amylovora strains collected in Hungary. Six of these cultivars are Hungarian ones of unknown origin, while four are traditional old varieties. Resistant cultivars should serve as germplasm for future breeding. Inoculations were made with a mixture of different pear isolates of the bacteria collected from various growing regions of Hungary (Ea 21, 23), at a density of 5x108 cells/ml. Susceptibility/resistance has been assessed on the basis of intensity of blight symptoms observed on shoots, flower parts and fruits. Cultivars were assigned to three susceptibility groups (low, moderate and high). Complete resistance was not found among the cultivars tested. The highest level of resistance was found in cultivar 'Kieffer', while the other cultivars displayed either moderate or high susceptibility to infection.https://ojs.lib.unideb.hu/IJHS/article/view/506traditional pear cultivarsfire blight susceptibilityin vitro testing |
| spellingShingle | K. Honty M. Hevesi M. Göndör G. Tóth M. V. Bács-Várkuti A. Ferenczy Susceptibility of some traditional pear cultivars of Hungarian and foreign origin to the pathogenic bacterium Erwinia amylovora International Journal of Horticultural Science traditional pear cultivars fire blight susceptibility in vitro testing |
| title | Susceptibility of some traditional pear cultivars of Hungarian and foreign origin to the pathogenic bacterium Erwinia amylovora |
| title_full | Susceptibility of some traditional pear cultivars of Hungarian and foreign origin to the pathogenic bacterium Erwinia amylovora |
| title_fullStr | Susceptibility of some traditional pear cultivars of Hungarian and foreign origin to the pathogenic bacterium Erwinia amylovora |
| title_full_unstemmed | Susceptibility of some traditional pear cultivars of Hungarian and foreign origin to the pathogenic bacterium Erwinia amylovora |
| title_short | Susceptibility of some traditional pear cultivars of Hungarian and foreign origin to the pathogenic bacterium Erwinia amylovora |
| title_sort | susceptibility of some traditional pear cultivars of hungarian and foreign origin to the pathogenic bacterium erwinia amylovora |
| topic | traditional pear cultivars fire blight susceptibility in vitro testing |
| url | https://ojs.lib.unideb.hu/IJHS/article/view/506 |
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