Discriminant analysis to identify molecular markers associated with Mal de Río Cuarto (MRC) resistance

BONAMICO, NC;; ARROYO, AT;; BALZARINI, MG;; IBAÑEZ, MA;; BORGHI, ML;; DÍAZ, DG;; SALERNO, JC;; DI RENZO, MA

MaizeGDB

Maize Genetics Corporation Newsletter University of Misouri

Año: 2009 vol. 83 p. 42 - 44

0100-6460

In Argentina, the production of maize for grain is highly affected by MRC-disease, which is caused by a virus of the family Reoviridae, genus Fijivirus and transmitted by the planthopper Delphacodes kuscheli Fennah (Homoptera: Delphacidae) vector. Traditional mapping of QTL for resistance to MRC disease has been reported using early-generation F2:3. A series of agricultural applications of discriminant analysis (DA), involving recombinant inbred lines (RILs), is another way to identify meaningful markers associated with phenotypic performance. Discriminant analysis was first used to identify RAPD markers associated with disease resistance in rice. It has been extended to other marker types such as SSR markers and AFLP markers