Fecha/hora: 16/06/2024 15:28:51

Biblioteca(s): | INIA La Estanzuela.
Fecha corriente: | 09/11/2020
Fecha de la última actualización: | 15/02/2022
Autoria: | HE, X.; AZZIMONTI, G.; SÁNCHEZ-VIDAÑA, M.R.; PEREYRA, S.; SANSALONI, C.; HERNÁNDEZ-ANGUIANO, A.M.; CHAWADE, A.; SINGH, P.K.
Afiliación: | International Maize and Wheat Improvement Center (CIMMYT), Apdo. Postal 6-641, 06600  Mexico DF, Mexico.; GUSTAVO AZZIMONTI, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; MARIEL DEL ROSARIO SÁNCHEZ-VIDAÑA, International Maize and Wheat Improvement Center (CIMMYT), Apdo. Postal 6-641, 06600 Mexico DF, Mexico;  Colegio de Postgraduados, Montecillo, 56230, Texcoco, México.; SILVIA ANTONIA PEREYRA CORREA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; CAROLINA SANSALON, International Maize and Wheat Improvement Center (CIMMYT), Apdo. Postal 6-641, 06600 6 Mexico DF, Mexico.; Colegio de Postgraduados, Montecillo, 56230, Texcoco, México.; AAKASH CHAWADE, Department of Plant Breeding, Swedish University of Agricultural Sciences, 23053 Alnarp,  Sweden.; International Maize and Wheat Improvement Center (CIMMYT), Apdo. Postal 6-641, 06600  Mexico DF, Mexico.
Título: | Mapping for adult-plant resistance against Septoria tritici blotch in a common wheat line Murga.
Año de publicación: | 2021
Fuente/Imprenta: | Phytopathology,2021 Jun;111(6):1001-1007. DOI: https://doi.org/10.1094/PHYTO-05-20-0172-R
ISSN: | e-1943-7684
DOI: | 10.1094/PHYTO-05-20-0172-R
Idioma: | Inglés
Notas: | Article history: Published Online: 3 Nov 2020

Contenido:

Abstract:
Septoria tritici blotch (STB) is a major foliar disease globally, which is notorious in the fast development of fungicide resistance, making host resistance an indispensable component in mitigating STB. CIMMYT wheat line Murga is well known for its high, durable, and broad-spectrum resistance against STB infection, and the purpose of this study was to investigate its resistance mechanism to facilitate its utilization in breeding. A recombinant inbred line population was derived from a cross between Murga and a STB susceptible line Huirivis#1, comprising 297 progenies. The population was evaluated for adult-plant STB resistance in Toluca, Mexico (from 2017 to 2019), and in La Estanzuela, Uruguay (from 2016 to 2018). Genotyping was performed with the DArTSeq platform. QTL mapping indicated a major and stable QTL on chromosome 3DL, explaining a phenotypic variation for STB of 41.2-62.5% in Mexico and 27.5-40.3% in Uruguay. This QTL was regarded as Stb16 based on comparison of its physical position, the possible origin from synthetic wheat, and its broad-spectrum resistance. Additional QTL with minor effects were identified on chromosomes 2B, 2D, 3A, 3B, and 5B. The one on 5BS was significant in four out of the six environments and must be new. Murga was the resistant donor for all QTL, except for those on 2B and 3A. Being an elite breeding line, the Stb16 carrier Murga could be used as a promising STB resistance donor. The rational employment of Stb16 could contribute to STB management yet avoid the rapid emergence of Stb16-virulent isolates.

Palabras-Clave: | DISEASE RESISTANCE; QTL MAPPING; RESISTENCIA A ENFERMEDADES Y PLAGAS; SEPTORIA TRITICI; STB; TRITICUM AESTIVUM; WHEAT; ZYMOSEPTORIA TRITICI.
Thesagro: | TRIGO; TRITICUM AESTIVUM.
Categoría del tema: | H20 Enfermedades de las plantas
Registro original: | INIA La Estanzuela (LE)
Ejemplares: | LE - (103237-1) - PXI - AP - DD - PP/PHYTOPATHOLOGY/2021 -  -  - DIS