IDENTIFICATION OF THE GENE FOR ADULT-PLANT LEAF RUST RESISTANCE IN THATCHER

P. L. Dyck

Canadian Journal of Plant Science · 1979 · 41 citations · 0 references

Concepts

Abstract

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 W2 1 , an inhibitor of waxy foliage, both known to be on chromosome arm 2Dα and linked with Lr22a.