Identification of the Gene for Adult-Plant Leaf Rust Resistance in Thatcher

Dyck, P.L.

Canadian Journal of Plant Science 59(2): 499-501


ISSN/ISBN: 0008-4220
DOI: 10.4141/cjps79-078
Accession: 068494018

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The gene for adult-plant resistance to race 9 of leaf rust (Puccinia recondita Rob. ex. Desm.) in the common wheat cultivar Thatcher (Triticum aestivum L.) was allelic to Lr22a, a gene for adult-plant leaf rust resistance previously transferred to hexaploid wheat from Aegilops squarrosa L. This gene, designated Lr22b, was linked with Tg, a gene for tenacious glumes, and W21, an inhibitor of waxy foliage, both known to be on chromosome arm 2Dα and linked with Lr22a.