"Rpv14", a new genetic source for "Plasmopara viticola" resistance conferred by "Vitis cinerea"

• I. Ochssner ^[1] ; L. Hausmann ^[1] ; R. Töpfer ^[1]
  1. [1] Julius Kühn-Institut

     Julius Kühn-Institut

     Landkreis Harz, Alemania

     
• Localización: Vitis: Journal of Grapevine Research, ISSN 0042-7500, Vol. 55, Nº 2, 2016, págs. 79-81
• Idioma: inglés
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• Resumen

  • A biparental population segregating for downy mildew resistance was studied to identify resistance linked molecular markers. The progeny of 202 individuals from a cross of V3125 (susceptible breeding line) with 'Börner' (resistant rootstock) was phenotyped in the field in four seasons and by evaluating artificially infected leaf discs. QTL mapping revealed a major resistance locus on chromosome 5 that explained up to 17.4 % of the phenotypic variance. This new resistance locus was named Rpv14. It was transmitted from the male grandparent V. cinerea Arnold to 'Börner' and is associated with the marker GF05-13