Linkage of Genes for Reaction to Puccinia Graminis F. Sp. Tritici and p. Recondita in Selkirk Wheat and Related Cultivars

Abstract

A previously unidentified gene, Sr23, for resistance to P. graminis in wheat cultivars Selkirk, Exchange, Warden, and possibly Etoile de Choisy is reported. Sr23, which is involved in a necrotic infection type, is closely linked ( <: 0·7 % recombination at P = 0·05) in coupling with Lr16 for resistance to P. recondita which is located in chromosome 4A.