Fecha/hora: 16/06/2024 05:58:23

Biblioteca(s): | INIA La Estanzuela; INIA Las Brujas.
Fecha corriente: | 12/11/2015
Fecha de la última actualización: | 19/11/2019
Autoria: | SILVA, P.; CALVO-SALAZAR, V.; CONDON, F.; QUINCKE, M.; PRITSCH, C.; GUTIÉRREZ, L.; CASTRO, A.; HERRERA-FOESSEL, S.; VON ZITZEWITZ, J.; GERMAN, S.
Afiliación: | MARIA PAULA SILVA VILLELLA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; VIOLETA CALVO-SALAZAR, CIMMYT (Centro Internacional de Mejoramiento de Maíz y Trigo); FEDERICO CONDON PRIANO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; MARTIN CONRADO QUINCKE WALDEN, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; CLARA PRITSCH, Universidad de la República (UdelaR)/ Facultad de Agronomía; LUCÍA GUTIÉRREZ, Universidad de la República (UdelaR)/ Facultad de Agronomía; ARIEL CASTRO, Universidad de la República (UdelaR)/ Facultad de Agronomía; SYBIL HERRERA-FOESSEL, CIMMYT (Centro Internacional de Mejoramiento de Maíz y Trigo); JARISLAV VON ZITEZWEITZ, SECOBRA; SILVIA ELISA GERMAN FAEDO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay.
Título: | Effects and interactions of genes Lr34, Lr68 and Sr2 on wheat leaf rust adult plant resistance in Uruguay
Año de publicación: | 2015
Fuente/Imprenta: | Euphytica, 2015, v. 204, p. 599?608.
ISSN: | 1573-5060.
DOI: | 10.1007/s10681-014-1343-6
Idioma: | Inglés

Contenido:

ABSTRACT.

Achieving durable resistance to leaf rust (LR), caused by Puccinia triticina, in wheat has been one of the main objectives of breeding programs. Durability of LR resistance is considered to be associated with adult plant resistance (APR) genes that are quantitatively inherited and whose expression is largely influenced by environment. Our objective
was to study the effects and interactions of APR genes Lr34, Lr68 and Sr2 on LR response in Uruguay using two BC1F6 populations (?LE2304*2/Parula? and ?ORL99192*2/Parula?). The experimental material was screened for LR in three artificially inoculated environments (La Estanzuela 2012 and 2013 and Young 2012). Linked molecular markers were used to
detect the presence of the genes conferring resistance to LR. Gene Lr34 was fixed in the ?LE2304*2/Parula? population. Lr68?Sr2 resulted in a reduction of 79 % of the LR area under the disease progress curve (AUDPC), while the presence of Lr68 alone resulted in a reduction of 51 %. In the ?ORL99192*2/Parula? population, the combined effect of Lr34?Lr68?Sr2 led to the highest reduction of LR AUDPC (73 %). Individually, Lr34 and Lr68 resulted in a reduction of the LR AUDPC of 14 and 50 %, respectively. Sr2 alone did not reduce LR AUDPC but enhanced the effect of either Lr34 or Lr68. Unlike previous reports Lr68 conferred a higher level of LR resistance than Lr34 in Uruguay.

@Springer Science+Business Media Dordrecht 2015

Palabras-Clave: | ADDITIVE RESISTANCE; ADULT PLANT RESISTANCE; DESARROLLO LENTO DE ROYA; GENES DE RESISTENCIA DE PLANTA ADULTA; GENES DE RESISTENCIA DE PLÁNTULAS; GENES MAYORES; GENES MENORES; PUCCINIA TRITICINA; ROYA DE LA HOJA DE TRIGO; SLOW RUSTING; SLOW RUSTING RESISTANCE; TRITICUM AESTIVUM.
Thesagro: | TRIGO; TRITICUM AESTIVUM.
Categoría del tema: | F30 Genética vegetal y fitomejoramiento
Registro original: | INIA Las Brujas (LB)
Ejemplares: | LB - (100786-1) - PXI - AP - PP - PP/EUPHYTICA/2015 -  -  - DIS