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Título

Exploitation of nuclear and cytoplasm variability in Hordeum chilense for wheat breeding

Autor Rodríguez-Suárez, Cristina ; Giménez, María J. ; Ramírez, M. Carmen ; Martín Ramírez, Azahara Carmen ; Gutiérrez, Natalia ; Ávila, Carmen M.; Martín, Antonio ; Atienza, Sergio G.
Palabras clave Cytoplasm
Hordeum chilense
Plant breeding
Plasmon
Wild relatives
Fecha de publicación jul-2011
EditorCambridge University Press
Citación Plant Genetic Resources 9(2): 313- 316 (2011)
ResumenHordeum chilense Roem. et Schultz. is a diploid wild barley native to Chile and Argentina. The high crossability of this species with other members of the Triticeae tribe promoted the development of the new species × Tritordeum Ascherson et Graebner. Hexaploid tritordeum was developed from the hybrid derived from the cross between H. chilense (used as female parent) and durum wheat. The interest of H. chilense is based on the presence of traits potentially useful for wheat breeding, including high endosperm carotenoid content, septoria tritici blotch resistance and abiotic stress tolerance. Besides, the variability at cytoplasm level is also important in this species. The development of common wheat-H. chilense alloplasmic lines (nucleus from wheat and cytoplasm from H. chilense) results in fertile or male sterile genotypes, depending on the accession donating the cytoplasm. Furthermore, these alloplasmic lines constitute an ideal system for deepening our knowledge on nuclear-cytoplasm interactions. In conclusion, H. chilense is an interesting source of variability for wheat breeding. © 2011 NIAB.
URI http://hdl.handle.net/10261/87816
DOI10.1017/S1479262111000402
Identificadoresdoi: 10.1017/S1479262111000402
issn: 1479-2621
e-issn: 1479-263X
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