BALZARINI MONICA GRACIELA
Artículos
Título:
Genome-wide association study of resistance to Mal de Río Cuarto disease in maize
Autor/es:
ROSSI, EZEQUIEL A.; RUIZ, MARCOS; BONAMICO, NATALIA CECILIA;; BALZARINI, MÓNICA GRACIELA
Revista:
AGRONOMY JOURNAL
Editorial:
AMER SOC AGRONOMY
Referencias:
Año: 2020 vol. 112 p. 4624 - 4624
ISSN:
0002-1962
Resumen:
rgentine maize has been extensively screened for incidence (INC) and severity(SEV) of Mal de Río Cuarto disease (MRC), caused by Mal de Río Cuarto virus(MRCV), family Reoviridae, genus Fijivirus, narrowing the breeding genetic basis.Both traits are highly heritable phenotypic measurements, and quantify the strongdisease impact on grain yield. The adaptation of exotic germplasm to variation ofthose traits has not been explored. The aim of this work was to identify, in a non-localand diverse panel of maize inbred lines, novel genomic regions associated with resistanceto MRC. First, we phenotyped 206 maize inbred lines from the InternationalMaize and Wheat Improvement Center (CIMMYT), in several environments of theMRC-endemic area under natural virus infection, to obtain the best linear unbiasedpredictor (BLUP) of line effects regarding INC and SEV. A multi-environment andmulti-trait mixed linear model was fitted to derive the multivariate BLUPs. Geneticvariance and mean-basis heritabili