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ARS Home » Southeast Area » Dawson, Georgia » National Peanut Research Laboratory » Research » Publications at this Location » Publication #359389

Research Project: Integration of Traditional Methods and Novel Molecular Strategies for Improving Disease Resistance and Input-use Efficiency in Peanut

Location: National Peanut Research Laboratory

Title: Identification of smut resistance in wild Arachis species and its introgression into peanut elite lines

item DE BLAS, FRANCISCO - Universidad National Del Nordeste
item BRESSANO, MARINA - Universidad Nacional De Cordoba
item TEICH, INGRID - Cordoba University
item BALZARINI, MONICA - Universidad Nacional De Cordoba
item Arias De Ares, Renee
item MANIFESTO, MARIA - Instituto Nacional De Tecnologia Agropecuaria
item COSTERO, BEATRIZ - Universidad Nacional De Cordoba
item ODDINO, CLAUDIO - National University Of Rio Cuarto
item SOAVE, SARA - Criadero El Carmen, Arg
item SOAVE, JUAN - Criadero El Carmen, Arg
item BUTELER, MARIO - Criadero El Carmen, Arg
item Massa, Alicia
item SEIJO, GUILLERMO - Instituto De Botánica Del Nordeste

Submitted to: Crop Science
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 3/21/2019
Publication Date: 5/2/2019
Citation: De Blas, F., Bressano, M., Teich, I., Balzarini, M., Arias De Ares, R.S., Manifesto, M., Costero, B., Oddino, C., Soave, S., Soave, J., Buteler, M., Massa, A.N., Seijo, G. 2019. Identification of smut resistance in wild Arachis species and its introgression into peanut elite lines. Crop Science.

Interpretive Summary: After three years of field trials on randomized complete block design, we have identified accessions with greater resistance to smut than any A. hypogaea material so far tested using ANOVA and Scott and Knott clustering method. A RIL population was developed by the cross of an experimental line of A. hypogaea and an amphidiploid obtained from three different wild species followed by chromosome duplication. The amphidiploid behaved similarly to the wild species, evidencing an effective transference of the resistance from the wild diploid to materials completely compatible with peanut. We also report a broad phenotypic variability of resistance to peanut smut among the RIL population analysed. Using SSR we confirmed the presence of wild genomic fragments in the amphidiploid.

Technical Abstract: Peanut smut is an emerging disease for this crop, so far endemic to Argentina with few reports in other two Latin American countries. Resistance to this disease was detected in wild species of peanut, though these plants can not normally cross with the cultivated peanut. Artificial crosses generate what is called "amphidiploids" that then can be crossed with cultivated peanut to transfer the resistance genes. Peanut smut resistant amphidiploids were crossed with cultivated peanuts, and the resulting progeny showed ressitance to peanut smut.