Present Situation of the Citrus Tristeza Virus in the Valencian Community
Tristeza disease of citrus (CTV) occurred heavily in the Ribera Alta areas of the Jucar Valley (Valencia) beginning in 1957. From that time an estimated 10 million trees grafted on sour orange have been killed. Most of them were in the Valencian Community (VC), which is composed of Alicante, Castell...
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| Formato: | conferenceObject |
| Lenguaje: | Inglés |
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IOCV
2021
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| Acceso en línea: | http://hdl.handle.net/20.500.11939/7696 https://iocv.ucr.edu/sites/g/files/rcwecm4696/files/2020-06/10th001_007.pdf |
| _version_ | 1855032653328154624 |
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| author | Cambra, Mariano Serra-Aracil, José Villalba, David Moreno, Pedro |
| author2 | Timmer, L. W. |
| author_browse | Cambra, Mariano Moreno, Pedro Serra-Aracil, José Timmer, L. W. Villalba, David |
| author_facet | Timmer, L. W. Cambra, Mariano Serra-Aracil, José Villalba, David Moreno, Pedro |
| author_sort | Cambra, Mariano |
| collection | ReDivia |
| description | Tristeza disease of citrus (CTV) occurred heavily in the Ribera Alta areas of the Jucar Valley (Valencia) beginning in 1957. From that time an estimated 10 million trees grafted on sour orange have been killed. Most of them were in the Valencian Community (VC), which is composed of Alicante, Castellon, and Valencia, where about 160,000 ha (approximately 64 million trees)
are planted. Only 20% of these trees are grafted on tolerant rootstocks. To determine the real incidence of CTV, an infection map was made by random sampling 0.1% of the trees in Alicante (15,705), Castellon (15,915) and Valericia (33,000). Diagnosis of CTV was done by ELISA-DAS using CTV-specific monoclonal antibodies. The selection of sampling fields was randomized and proportional to the citrus areas on aerial photographs. Three young shoots, about 10-15 cm long, were collected from each tree. The sample collection method, their transport to the laboratory, and analysis were standardized and the field data, together with the final diagnosis were included in a computerized databank. Preliminary data from 80% of the samples indicate that 8.5% of the hectarage does not appear to be diseased; that on 60.4% the incidence of infected trees is lower than 10%; that on 25.3% the incidence varies from 10% to 50%; and on 5.8% of the total hectarage in the VC, the incidence of infected trees is higher than 50%. |
| format | conferenceObject |
| id | ReDivia7696 |
| institution | Instituto Valenciano de Investigaciones Agrarias (IVIA) |
| language | Inglés |
| publishDate | 2021 |
| publishDateRange | 2021 |
| publishDateSort | 2021 |
| publisher | IOCV |
| publisherStr | IOCV |
| record_format | dspace |
| spelling | ReDivia76962025-04-25T14:52:43Z Present Situation of the Citrus Tristeza Virus in the Valencian Community Cambra, Mariano Serra-Aracil, José Villalba, David Moreno, Pedro Timmer, L. W. Decline Sampling methods H20 Plant diseases U40 Surveying methods A50 Agricultural research Disease surveys ELISA Monoclonal antibodies Sour orange Tristeza disease of citrus (CTV) occurred heavily in the Ribera Alta areas of the Jucar Valley (Valencia) beginning in 1957. From that time an estimated 10 million trees grafted on sour orange have been killed. Most of them were in the Valencian Community (VC), which is composed of Alicante, Castellon, and Valencia, where about 160,000 ha (approximately 64 million trees) are planted. Only 20% of these trees are grafted on tolerant rootstocks. To determine the real incidence of CTV, an infection map was made by random sampling 0.1% of the trees in Alicante (15,705), Castellon (15,915) and Valericia (33,000). Diagnosis of CTV was done by ELISA-DAS using CTV-specific monoclonal antibodies. The selection of sampling fields was randomized and proportional to the citrus areas on aerial photographs. Three young shoots, about 10-15 cm long, were collected from each tree. The sample collection method, their transport to the laboratory, and analysis were standardized and the field data, together with the final diagnosis were included in a computerized databank. Preliminary data from 80% of the samples indicate that 8.5% of the hectarage does not appear to be diseased; that on 60.4% the incidence of infected trees is lower than 10%; that on 25.3% the incidence varies from 10% to 50%; and on 5.8% of the total hectarage in the VC, the incidence of infected trees is higher than 50%. 2021-10-27T10:33:40Z 2021-10-27T10:33:40Z 1988 conferenceObject Cambra, M., Serra, J., Villalba, D. & Moreno, P. (1988). Present Situation of the Citrus Tristeza Virus in the Valencian Community. Proceedings of the Tenth Conference of the IOCV, 1-7. 2313-5123 0074-7203 (e-ISSN) http://hdl.handle.net/20.500.11939/7696 https://iocv.ucr.edu/sites/g/files/rcwecm4696/files/2020-06/10th001_007.pdf en 1986-11-17 Tenth Conference of the International Organization of Citrus Virologists Valencia, España Atribución-NoComercial-SinDerivadas 3.0 España http://creativecommons.org/licenses/by-nc-nd/3.0/es/ openAccess IOCV electronico |
| spellingShingle | Decline Sampling methods H20 Plant diseases U40 Surveying methods A50 Agricultural research Disease surveys ELISA Monoclonal antibodies Sour orange Cambra, Mariano Serra-Aracil, José Villalba, David Moreno, Pedro Present Situation of the Citrus Tristeza Virus in the Valencian Community |
| title | Present Situation of the Citrus Tristeza Virus in the Valencian Community |
| title_full | Present Situation of the Citrus Tristeza Virus in the Valencian Community |
| title_fullStr | Present Situation of the Citrus Tristeza Virus in the Valencian Community |
| title_full_unstemmed | Present Situation of the Citrus Tristeza Virus in the Valencian Community |
| title_short | Present Situation of the Citrus Tristeza Virus in the Valencian Community |
| title_sort | present situation of the citrus tristeza virus in the valencian community |
| topic | Decline Sampling methods H20 Plant diseases U40 Surveying methods A50 Agricultural research Disease surveys ELISA Monoclonal antibodies Sour orange |
| url | http://hdl.handle.net/20.500.11939/7696 https://iocv.ucr.edu/sites/g/files/rcwecm4696/files/2020-06/10th001_007.pdf |
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