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Identification and Mapping of Lr3 and a Linked Leaf Rust Resistance Gene in Durum Wheat

^a Dep. of Forest Mycology and Pathology, Swedish Univ. of Agricultural Sciences (SLU), Box 7026, S 750 07 Uppsala, Sweden
^b International Maize and Wheat Improvement Center (CIMMYT), Apdo. Postal 6-641, 06600 México, D.F., México
^c Campo Experimental Valle de México INIFAP, Apdo. Postal 10, 56230, Chapingo, Edo de México, México
^d CSIRO, Plant Industry, GPO Box 1600, Canberra ACT 2601, Australia

View larger version (16K): [in this window] [in a new window]   Figure 1. Linkage group of AFLP marker P87/M70128 associated with the leaf rust resistance gene in durum wheat Camayo according to the ITMI genetic map (distances are displayed in cM).

View larger version (12K): [in this window] [in a new window]   Figure 2. Distance in cM between three AFLP markers and the leaf rust resistance gene (RgeneCamayo) using the entire population of 96 F3 families from the Atil C2000 x Camayo cross.

View larger version (21K): [in this window] [in a new window]   Figure 3. Distance in cM between three AFLP markers linked to the leaf rust resistance gene in Camayo (RgeneCamayo), and the STS marker Xmwg798 linked to the gene in Storlom (RgeneStorlom), using the molecular and phenotypic responses of 181 F3 families from the Camayo x Storlom cross. The two leaf rust resistance genes, in Camayo and in Storlom, respectively, are linked in repulsion.

View larger version (50K): [in this window] [in a new window]   Figure 4. Characterization of the STS marker Xmwg798 in Thatcher control, ThatcherLr3a, ThatcherLr3ka, ThatcherLr3bg, Atil C2000, Camayo, and Storlom.