IMICO   27341
INSTITUTO DE INVESTIGACION EN MICOLOGIA Y MICOTOXICOLOGIA
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
MultI-resitant RILs Population assessed for Peanut Blight caused by Sclerotinia minor.
Autor/es:
ROSSO, MELINA; BUTELER, MARIO; SEIJO, GUILLERMO; DEBLAS, FRANCISCO; SOAVE, SARA; ODDINO, CLAUDIO; BRESSANO, MARINA; SOAVE, JUAN
Lugar:
Saly Portudal
Reunión:
Congreso; 10th International Conference on Advances in Arachis through Genomics & Biotechnology; 2020
Institución organizadora:
AAGB
Resumen:
Peanut blight caused by Sclerotinia minor and S. Sclerotiorum became a concern of farmers in Argentina for its high impact on yield losses. The strategies to control soilborne diseases mainly rely on long term rotations and no-till practices that decrease the amount of inoculum by promotion of bio-control but they are still insufficient. The peanut blight tests on wild Arachis species during three seasons (2003-2005) of field trials at ?Criadero El Carmen? in General Cabrera, Córdoba, Argentina (32°49'46.1" latitude S 63°52'12.0" longitude W) showed no symptoms, and therefore, they were considered resistant to peanut blight. As many authors had previously demonstrated we considered the crosses of cultivated peanut with wild species as a mean to introgress this resistance to manage the epiphytotic. Three of the previous mentioned wild species were used to construct a fertile amphidiploid resistant to the peanut smut, which crossed with an elite high-oleic line originated a population of 93 recombinant inbred lines (RILs). After the first season (2017) of peanut blight field trials, statistically significant differences (P=0.05) of disease Incidence and Severity were detected among RILs and their progenitors. This population had also been tested for peanut smut and LLS with similar results what makes it a promissory material to be used in following pre-breeding programs focused on obtaining multi-disease peanut resistant lines.