Triticum aestivum
Seeds for each variety were obtained from the following breeders:    Alchemy  Limagrain UK Ltd  Avalon  PBIC  Cadenza  PBIC  Hereward  RAGT Seeds Ltd  Rialto  PBIC  Robigus  KWS UK Ltd  Savannah  Zeneca Seeds UK Ltd  Xi19  Limagrain UK Ltd    Plants were grown at the University of Bristol Experimental glasshouses. All plants were grown in pots in a peat-based soil and maintained in a glasshouse at 15–25 *C under a light regime of 16 h light, 8 h dark. Root and leaf tissues were harvested from 6-week-old plants. All harvested tissues were immediately frozen on liquid nitrogen and stored at -80 *C until nucleic acid extraction. Genomic DNA was extracted using phenol/chloroform and by Qiagen QiaQuick columns.