Highc chromosome4/20/2023 ![]() ![]() magna) 4x, as a donor parent, in a successive backcrossing scheme with the high-yielding Brazilian cultivar IAC OL 4. Methods: To overcome the known compatibility barriers for the use of wild species in peanut breeding programs, we used an induced allotetraploid ( Arachis stenosperma × A. Only partial resistance to fungal diseases has been found in cultivated peanut, but high resistances have been described on the secondary gene pool. Late leaf spot is the most frequent disease and a major problem of the crop in Brazil and many other tropical countries. Introduction: Fungal foliar diseases can severely affect the productivity of the peanut crop worldwide. 6Department of Crop and Soil Science, University of Georgia, Athens, GA, United States.5Department of Plant Pathology, University of Georgia, Athens, GA, United States.4Institute of Plant Breeding, Genetics and Genomics, University of Georgia, Athens, GA, United States.3Grain and Fiber Center, Agronomic Institute of Campinas (IAC), Pindorama, SP, Brazil.2Grain and Fiber Center, Agronomic Institute of Campinas (IAC), Campinas, SP, Brazil.1Plant Genetics Laboratory, Embrapa Genetic Resources and Biotechnology, Brasília, DF, Brazil. ![]() Márcio de Carvalho Moretzsohn 1*, João Francisco dos Santos 2, Andrea Rocha Almeida Moraes 2, Adriana Regina Custódio 1, Marcos Doniseti Michelotto 3, Namrata Mahrajan 4, Soraya Cristina de Macedo Leal-Bertioli 4,5, Ignácio José Godoy 2 and David John Bertioli 4,6 ![]()
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