Introgression of crown rust (Puccinia coronata) resistance from meadow fescue (Festuca pratensis) into Italian ryegrass (Lolium multiflorum)Genetic mapping and identification of associated molecular markers

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Type Article
Original languageEnglish
Pages (from-to)62-67
Number of pages6
JournalPlant Pathology
Volume55
Issue number1
Early online date20 Dec 2005
DOI
Publication statusPublished - Feb 2006
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Abstract

Crown rust (Puccinia coronata) resistance (CRres), which had been introgressed from meadow fescue (Festuca pratensis) into the Italian ryegrass (Lolium multiflorum) background, was genetically mapped with amplified fragment length polymorphism (AFLP) and sequence tagged site (STS) markers to a terminal segment of chromosome 5. Comparative mapping had previously shown that this region of the Lolium/Festuca genome has a degree of conserved genetic synteny with chromosomes 11 and 12 of rice. Sequences from rice chromosome 12 were used as templates for identifying further STS markers that cosegregated with CRres. The relative genomic positions of molecular markers associated with CRres in L. multiflorum, L. perenne, F. pratensis and oats is discussed, along with their relationships to physical positions on rice chromosomes C11 and C12.

Keywords

  • AFLP analysis, crown rust resistance, festuca pratensis, lolium spp, marker assisted selection, puccinia coronata