Characterization of a putative rice mutant for reaction to rice tungro disease
Artificial mutations may induce traits that are scarce among natural germplasm sources. This study was conducted to characterize a rice line derived from variety IR64 showing resistance to rice tungro disease (RTD). Approximately 24,000 lines derived from IR64 seeds treated with mutagens were evalua...
| Autores principales: | , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Wiley
2008
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/166360 |
| _version_ | 1855534588678373376 |
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| author | Zenna, N.S. Cabauatan, P.Q. Baraoidan, M. Leung, H. Choi, I.-R. |
| author_browse | Baraoidan, M. Cabauatan, P.Q. Choi, I.-R. Leung, H. Zenna, N.S. |
| author_facet | Zenna, N.S. Cabauatan, P.Q. Baraoidan, M. Leung, H. Choi, I.-R. |
| author_sort | Zenna, N.S. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Artificial mutations may induce traits that are scarce among natural germplasm sources. This study was conducted to characterize a rice line derived from variety IR64 showing resistance to rice tungro disease (RTD). Approximately 24,000 lines derived from IR64 seeds treated with mutagens were evaluated for reaction to RTD. One of the lines, M4D6 83‐1 (MD83), showed enhanced resistance to RTD. MD83 was resistant to rice tungro spherical virus (RTSV) and the virus vector, green leafhopper (GLH; Nephotettix virescens Distant). MD83 was crossed with susceptible varieties IR64 and Taichung Native 1. All F1 plants were susceptible to RTSV, whereas F2 and F3 progenies segregated into resistant and susceptible phenotypes in a 1:3 ratio, indicating that the resistance is controlled by a single recessive locus. Most of the F3 lines resistant to RTSV were also GLH resistant, suggesting that the resistance to RTSV and GLH was governed by the same locus. It has been difficult to prove whether the genotype MD83 was a product of a mutation event or was represented in the variety IR64 at a very low frequency. |
| format | Journal Article |
| id | CGSpace166360 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2008 |
| publishDateRange | 2008 |
| publishDateSort | 2008 |
| publisher | Wiley |
| publisherStr | Wiley |
| record_format | dspace |
| spelling | CGSpace1663602025-05-14T10:39:53Z Characterization of a putative rice mutant for reaction to rice tungro disease Zenna, N.S. Cabauatan, P.Q. Baraoidan, M. Leung, H. Choi, I.-R. disease resistance disease vectors insect pests loci mutants mutations pest resistance plant viruses nephotettix virescens rice tungro bacilliform virus rice tungro spherical virus Artificial mutations may induce traits that are scarce among natural germplasm sources. This study was conducted to characterize a rice line derived from variety IR64 showing resistance to rice tungro disease (RTD). Approximately 24,000 lines derived from IR64 seeds treated with mutagens were evaluated for reaction to RTD. One of the lines, M4D6 83‐1 (MD83), showed enhanced resistance to RTD. MD83 was resistant to rice tungro spherical virus (RTSV) and the virus vector, green leafhopper (GLH; Nephotettix virescens Distant). MD83 was crossed with susceptible varieties IR64 and Taichung Native 1. All F1 plants were susceptible to RTSV, whereas F2 and F3 progenies segregated into resistant and susceptible phenotypes in a 1:3 ratio, indicating that the resistance is controlled by a single recessive locus. Most of the F3 lines resistant to RTSV were also GLH resistant, suggesting that the resistance to RTSV and GLH was governed by the same locus. It has been difficult to prove whether the genotype MD83 was a product of a mutation event or was represented in the variety IR64 at a very low frequency. 2008-03 2024-12-19T12:56:09Z 2024-12-19T12:56:09Z Journal Article https://hdl.handle.net/10568/166360 en Wiley Zenna, N. S.; Cabauatan, P. Q.; Baraoidan, M.; Leung, H. and Choi, I.‐R. 2008. Characterization of a putative rice mutant for reaction to rice tungro disease. Crop Science, Volume 48 no. 2 p. 480-486 |
| spellingShingle | disease resistance disease vectors insect pests loci mutants mutations pest resistance plant viruses nephotettix virescens rice tungro bacilliform virus rice tungro spherical virus Zenna, N.S. Cabauatan, P.Q. Baraoidan, M. Leung, H. Choi, I.-R. Characterization of a putative rice mutant for reaction to rice tungro disease |
| title | Characterization of a putative rice mutant for reaction to rice tungro disease |
| title_full | Characterization of a putative rice mutant for reaction to rice tungro disease |
| title_fullStr | Characterization of a putative rice mutant for reaction to rice tungro disease |
| title_full_unstemmed | Characterization of a putative rice mutant for reaction to rice tungro disease |
| title_short | Characterization of a putative rice mutant for reaction to rice tungro disease |
| title_sort | characterization of a putative rice mutant for reaction to rice tungro disease |
| topic | disease resistance disease vectors insect pests loci mutants mutations pest resistance plant viruses nephotettix virescens rice tungro bacilliform virus rice tungro spherical virus |
| url | https://hdl.handle.net/10568/166360 |
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