Transfer of powdery mildew resistance from Aegilops variabilis into bread wheat |
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Authors: | Penko Spetsov Dominique Mingeot Jean Marie Jacquemin Krassiana Samardjieva Elena Marinova |
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Institution: | (1) Institute of Wheat and Sunflower, 9520 General Toshevo, Bulgaria;(2) Station D'Amelioration des Plantes, 5030 Gembloux, Belgium;(3) Institute of Genetic Engineering, 2232 Kostinbrod-2, Bulgaria |
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Abstract: | Winter hexaploid wheat (Triticum aestivum L.) was crossed with Aegilops variabilis to transfer resistance to powdery mildew into wheat. Following two backcrosses to wheat and from 5 to 9 generations of selfing, several disomic addition and substitution lines of hexaploid wheat resistant to the mildew pathogen were isolated. A pair of short satellited chromosomes was always observed in the resistant lines. Further evidence utilizing as markers for homoeologous group 1 HMW glutenin subunits and DNA hybridization with probe pGBX 3076 showed that an alien substitution involved this homoeologous group. |
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Keywords: | Triticum aestivum Aegilops variabilis powdery mildew resistance addition and substitution lines |
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