The present invention provides an improved Helminthosporium turcicum-resistant plant, in particular a maize plant which comprises a polynucleotide with one or more resistance-conferring genes, for example on a truncated chromosome fragment from the accession Pepitilla, as well as a cell, a tissue, a part, grain and seeds thereof, an isolated polynucleotide which comprises one or more resistance-conferring genes against Helminthosporium turcicum, a vector, a transgenic plant cell and a transgenic plant containing this polynucleotide. Furthermore, the invention encompasses suitable markers and their use in introducing resistance or the transgene into a plant, as well as the identification of improved maize plants which comprise a truncated chromosome fragment.SE PROVEE UNA PLANTA RESISTENTE A HELMINTHOSPORIUM TURCICUM MEJORADA, EN ESPECIAL UNA PLANTA DE MAÍZ, CÉLULA, UN TEJIDO, UNA PARTE, GRANO Y SEMILLA CORRESPONDIENTES, UN POLINUCLEÓTIDO AISLADO, QUE COMPRENDE UNO O VARIOS GENES MEDIADORES DE RESISTENCIA CONTRA HELMINTHOSPORIUM TURCICUM.
