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wheat midge Sm1

Mulualem T Kassa, Sabrina Haas, Edgar Schliephake, Clare Lewis, Frank M You, Curtis J Pozniak, Ilona Krämer, Dragan Perovic, Andrew G Sharpe, Pierre R Fobert, Michael Koch, Ian L Wise, Paul Fenwick, Simon Berry, James Simmonds, Delphine Hourcade, Patrice Senellart, Laure Duchalais, Olivier Robert, Jutta Förster, Julian B Thomas, Wolfgang Friedt, Frank Ordon, Cristobal Uauy, Curt A McCartney
SNP markers were developed for the OWBM resistance gene Sm1 that will be useful for MAS. The wheat Sm1 region is collinear with an inverted syntenic interval in B. distachyon. Orange wheat blossom midge (OWBM, Sitodiplosis mosellana Géhin) is an important insect pest of wheat (Triticum aestivum) in many growing regions. Sm1 is the only described OWBM resistance gene and is the foundation of managing OWBM through host genetics. Sm1 was previously mapped to wheat chromosome arm 2BS relative to simple sequence repeat (SSR) markers and the dominant, sequence characterized amplified region (SCAR) marker WM1...
August 2016: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
Daryl J Somers, Julian Thomas, Ron Depauw, Stephen Fox, Gavin Humphreys, George Fedak
Fusarium head blight of wheat is a major deterrent to wheat production world-wide. The genetics of FHB resistance in wheat are becoming clear and there is a good understanding of the genome location of FHB resistance QTL from different sources such as Sumai3, Wuhan, Nyubai and Frontana. All the components needed for assembling complex genotypes through large-scale molecular breeding experiments are now available. This experiment used high throughput microsatellite genotyping and half-seed analysis to process four independent crosses through a molecular breeding strategy to introduce multiple pest resistance genes into Canadian wheat...
November 2005: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
M A H Smith, R J Lamb, I L Wise, O O Olfert
An interspersed refuge of susceptible plants in a resistant, spring-sown wheat crop was tested as a strategy to protect crop resistance against evolution of virulence by the wheat midge Sitodiplosis mosellana (Géhin), and also to conserve a biocontrol agent Macroglenes penetrans(Kirby). Eight replicated field experiments were conducted using seed mixtures of 0, 5, 10, 15 and 100% or 0, 5 and 100% susceptible wheat with an agronomically similar wheat expressing the antibiotic resistance gene Sm1. The frequencies of eggs, mature larvae and parasitized larvae in susceptible and resistant wheat spikes, and midge-affected seeds in the harvest, were recorded for each plot...
April 2004: Bulletin of Entomological Research
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