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- W2967261061 abstract "Leaf rust, caused by Puccinia triticina Eriks, is one of the most serious diseases in wheat (Triticum aestivum L., AABBDD 2n=6x=42) production worldwide. Developing resistant cultivars is currently the most economical and effective approach to combating this disease. This experiment was designed to use molecular mapping to identify leaf rust resistance genes transferred from the wild goatgrass, Aegilops tauschii (DD, 2n=2x=14). The resistant lines in this experiment were developed from the Triticum turgidum line Do1 and the leaf rust resistance donor, Ae. tauschii accession TA1695. Microsatellite markers were used for chromosomal mapping and gene identification. During phenotypic screening, the population segregated for two different leaf rust resistance genes. One of the resistance genes was mapped on the short arm of chromosome 2D and may be the same as the previously mapped leaf rust gene Lr39. The closest marker identified in this experiment, Xgdm35, was located 12.6 cM from Lr39. While Lr39 has already been incorporated into a developed germplasm, this research shows that Ae. tauschii accession TA1695 is also a source of this resistance gene. At this time, the other resistance gene in the segregating population has not been mapped. However, from preliminary screening, this gene looks to be a promising and valuable source of leaf rust resistance." @default.
- W2967261061 created "2019-08-22" @default.
- W2967261061 creator A5061266478 @default.
- W2967261061 date "2003-01-01" @default.
- W2967261061 modified "2023-09-26" @default.
- W2967261061 title "Second Place Student Essay: Mapping of Aegilops tauschii Derived Leaf Rust Resistance Genes in Common Wheat" @default.
- W2967261061 hasPublicationYear "2003" @default.
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