Summary
The genes controlling resistance to three wheat rusts, viz., leaf rust (Lr26), stem rust (Sr31) and stripe or yellow rust (Yr9), and ω-secalins (Sec1), located on the short arm of rye chromosome 1R, were mapped with respect to each other and the centromere. Analysis of 214 seeds (or families derived from them) from testcrosses between a 1BL.1RS/1R heterozygote and ‘Chinese Spring’ ditelocentric 1BL showed no recombination between the genes for resistance to the three rusts, suggesting very tight linkage or perhaps a single complex locus conferring resistance to the three rusts. The rust resistance genes were located 5.4 ± 1.7 cM from the Sec1 locus, which in turn was located 26.1 ± 4.3 cM from the centromere; the gene order being centromere — Sec1 — Lr26/Sr31/Yr9 — telomere. In a second test-cross, using a different 1BL.1RS translocation which had only stem rust resistance (SrR), the above gene order was confirmed despite a very large proportion of aneuploids (45.8%) among the progeny. Furthermore, a map distance of 16.0 ± 4.8 cM was estimated for SrR and the telomeric heterochromatin (C-band) on 1RS. These results suggest that a very small segment of 1RS chromatin is required to maintain resistance to all three wheat rusts. It should be possible but difficult to separate the rust resistance genes from the secalin gene(s), which are thought to contribute to dough stickiness of wheat-rye translocation lines carrying 1RS.
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References
Benavente E, Orellana J (1989) Pairing competition between identical and homologous chromosomes in autotetraploid rye heterozygous for interstitial C-bands. Chromosoma 98:225–232
Dhaliwal AS, Mares DJ, Marshall DR (1987) Effect of 1B/1R translocation on milling and quality characteristics of bread wheats. Cereal Chem 64:72–76
Hanson WD (1959) Minimum family sizes for the planning of genetic experiments. Agron J 51:711–716
Koebner RMD, Shepherd KW (1985) Induction of recombination between rye chromosome 1RL and wheat chromosomes. Theor Appl Genet 71:208–215
Koebner RMD, Shepherd KW (1986) Controlled introgression to wheat of genes from rye chromosome arm 1RS by induction of allosyndesis. 1. Isolation of recombinants. Theor Appl Genet 73:197–208
Koebner RMD, Shepherd KW (1988) Isolation and agronomic assessment of allosyndetic recombinants derived from wheat/ rye translocation 1DL.1RS, carrying reduced amounts of rye chromatin. In: Miller TE, Koebner RMD (eds.) Proc 7th Int Wheat Genet Symp. Cambridge, England, pp 343–348
Lawrence GJ (1969) Homoeology of a rye chromosome with wheat chromosomes. Honours thesis, The University of Adelaide, Adelaide, Australia
Lawrence GJ, Appels R (1986) Mapping the nucleolus organizer region, seed protein loci and isozyme loci on chromosome arm 1R in rye. Theor Appl Genet 71:742–749
Lowry JR, Sammons DJ, Baenziger PS (1981) Identification and characterisation of the gene for powdery mildew (Erysiphe graminisem. Marchai f.sp. tritici) resistance in Amigo wheat. Agron Abstr 63
McIntosh RA (1988) Catalogue of gene symbols for wheat. In: Miller TE, Koebner RMD (eds) Proc 7th Int Wheat Genet Symp. Cambridge, England, pp 1225–1323
Mettin D, Bluthner WD, Schlegel R (1973) Additional evidence on spontaneous 1B/1R wheat-rye substitutions and translocations. In: Sears ER, Sears LMS (eds.) Proc 4th Int Wheat Genet Symp. University of Missouri, Columbia, MO, pp 179–184
Rajaram S, Mann ChE, Oritz-Ferrara G, Mujeeb-Kazi A (1983) Adaptation, stability and high yield potential of certain 1B/ 1R CIMMYT wheats. In: Sakamoto S (ed) Proc 6th Int Wheat Genet Symp. Kyoto, Japan, pp 613–621
Sears ER, Sears LMS (1978) The telocentric chromosomes of common wheat. In: Ramanujam S (ed) Proc 5th Int Wheat Genet Symp., Indian Soc Genet Plant Breed, New Delhi, pp 389–407
Shepherd KW (1973) Homoeology of wheat and alien chromosomes controlling endosperm protein phenotypes. In: Proc 4th Int Wheat Genet Symp. Sears ER, Sears LMS (eds) University of Missouri, Columbia MO, pp 745–760
Shepherd KW, Singh NK (1984) Yield and quality of wheats carrying a 1DL-1RS wheat-rye translocation. In: 2nd Int Workshop Gluten Proteins abstract. TNO, Wageningen
Shewry PR, Bradberry D, Franklin J, White RP (1984) The chromosomal locations and linkage relationships of the structural genes for the prolamin storage proteins (secalins) of rye. Theor Appl Genet 69:63–69
Singh NK, Shepherd KW (1984) Mapping of the genes controlling high-molecular-weight glutelin subunits of rye on the long arm of chromosome 1R. Genet Res 44:117–123
Singh NK, Shepherd KW (1985) The structure and genetic control of a new class of disulphide-linked proteins in wheat endosperm. Theor Appl Genet 71:79–92
Singh NK, Shepherd KW (1988a) Linkage mapping of the genes controlling endosperm proteins in wheat I. Genes on the short arms of group 1 chromosomes. Theor Appl Genet 75:628–641
Singh NK, Shepherd KW (1988b) Linkage mapping of the genes controlling endosperm proteins in wheat II. Genes on the long arms of group 1 chromosomes. Theor Appl Genet 75:642–650
Vosa CG, Marchi P (1972) Quinacrine fluorescence and Giemsa staining in plants. Nature New Biol 237:191–192
Wood EA, Sebesta EE, Starka KJ (1974) Resistance of ‘Gaucho’ triticale to Schizaphis graminum. Environ Entomol 3:720–721
Zeller FJ (1973) 1B/1R substitutions and translocations. In: Sears ER, Sears LMS (eds) Proc 4th Int Wheat Genet Symp. University of Missouri, Columbia M., pp 209–221
Zeller FJ, Fuchs E (1983) Cytologie und Krankheitsresistenz einer 1A/1Rund mehrerer 1B/1R Weizen-Roggen-Translokationssorten. Z Pflanzenzucht 90:285–296
Zeller FJ, Gunzel G, Fischbeck G, Gertenkorn P, Weipert D (1982) Veränderung der Backeigenschaften der Weizen-Roggen-Chromosomen-Translokation 1B/1R. Getreide Mehl Brot 36:141–143
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Singh, N.K., Shepherd, K.W. & McIntosh, R.A. Linkage mapping of genes for resistance to leaf, stem and stripe rusts and ω-secalins on the short arm of rye chromosome 1R. Theoret. Appl. Genetics 80, 609–616 (1990). https://doi.org/10.1007/BF00224219
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DOI: https://doi.org/10.1007/BF00224219