Artículo
Resistance against barley leaf rust (Puccinia hordei) in West-European spring barley germplasm
Autor/es | Rubiales Olmedo, Diego
Jaiser, Heidi Walther, Ursula Niks, R. E. Martínez Moreno, Fernando Bienvenido |
Departamento | Universidad de Sevilla. Departamento de Ciencias Agroforestales |
Fecha de publicación | 2000 |
Fecha de depósito | 2019-04-09 |
Resumen | The level and type of resistance against leaf rust (Puccinia hordei) was determined in modern spring barley
germplasm. In field trials all over Europe most accessions were in some locations and years significantly less ... The level and type of resistance against leaf rust (Puccinia hordei) was determined in modern spring barley germplasm. In field trials all over Europe most accessions were in some locations and years significantly less infected than the moderately resistant reference ‘Grit’. Differentiating P. hordei isolates indicated that most accessions carried hypersensitivity (Rph) genes. A virulence survey indicated that among the known resistance genes, only Rph7 is still fully effective in Europe. Some accessions carried undetermined hypersensitivity resistance gene(s) that were effective to all isolates tested. The level of non-hypersensitivity or partial resistance was assessed from the latency period of the fungus and the percentage of early aborted infection units not associated with plant cell necrosis. These parameters indicated that several accessions had a level of partial resistance higher than that of the highly partially resistant ‘Vada’. We concluded that barley breeders have achieved very high levels of partial resistance against P. hordei in spring barley germplasm. |
Cita | Rubiales Olmedo, D., Jaiser, H., Walther, U., Niks, R.E. y Martínez Moreno, F.B. (2000). Resistance against barley leaf rust (Puccinia hordei) in West-European spring barley germplasm. Agronomie, 2000 (20), 769 p.-782 p.. |