TITLE

Genetic analysis of the Aegilops longissima 3S chromosome carrying the Pm13 resistance gene

AUTHOR(S)
Alberto, Cenci; Renato, D'Ovidio; Antonio, Tanzarella Oronzo; Carla, Ceoloni; Marina, Pasquini; Enrico, Porceddu
PUB. DATE
March 2003
SOURCE
Euphytica;Mar2003, Vol. 130 Issue 2, p177
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The distal region of the short arm of chromosome 3S from Aegilops longissima, which carries the powdery mildew resistance gene Pm13, was introgressed into common wheat. Due to suppression of recombination between this region and corresponding wheat homoeologous segments, a possible strategy to construct a genetic map around the Pm13 gene was based on crosses between a wheat addition line carrying the Ae. longissima 3S chromosome and the corresponding 3S addition lines of Ae. searsii and Ae. variabilis. The efficiency of this strategy was evaluated by scoring recombination frequencies in progenies derived from these crosses. Recombination between 3S chromosomes from Ae. searsii and Ae. longissima was very low, whereas 26.5% recombinant alien chromosomes were obtained from the cross involving the Ae. variabilis and Ae. longissima 3S addition lines. These data were used to construct a 3S chromosome map that resulted largely colinear to the consensus map of the homoeologous group 3 of wheat.
ACCESSION #
15193938

 

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