Rht8 dwarf gene distribution in chinese wheats identified by microsatellite marker
Wheat microsatellite Xgwm261 was used to identify Rht8 dwarf gene in main Chinese wheat varieties released in the last 30 years. The results, supplemented by pedigree analysis, showed that 42.3 % of Chinese wheat varieties contained Rht8, but its frequency differed in different ecological zones. Com...
| Autores: | , , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2003 |
| País: | México |
| Institución: | Centro Internacional de Mejoramiento de Maíz y Trigo |
| Repositorio: | Repositorio Institucional de Publicaciones Multimedia del CIMMYT |
| OAI Identifier: | oai:repository.cimmyt.org:10883/21378 |
| Acceso en línea: | https://hdl.handle.net/10883/21378 |
| Access Level: | acceso abierto |
| Palabra clave: | AGRICULTURAL SCIENCES AND BIOTECHNOLOGY Bread Wheat Dwarf Genes Molecular Markers WHEAT GENES DWARF VARIETIES GENETIC MARKERS MICROSATELLITES |
| Sumario: | Wheat microsatellite Xgwm261 was used to identify Rht8 dwarf gene in main Chinese wheat varieties released in the last 30 years. The results, supplemented by pedigree analysis, showed that 42.3 % of Chinese wheat varieties contained Rht8, but its frequency differed in different ecological zones. Combined with the results of GA3 test, it indicated that 20.6 % of Chinese wheat varieties carried both Rht8 and GA3 insensitive dwarf genes. For most Chinese wheat varieties, their Rht8 could be traced back to Funo, Villa Glory, St1472/506 and St2422/464 introduced from Italy, and Bezostaya1 from Russia. 1B/1R varieties, such as Avrora, Lovrin 10, Kavkas, Predgornia 2, etc, once widely used as the parents resistant to rust and powdery mildew in China, could also be the donors of Rht8. |
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