Fig. 1From: The occurrence of spring forms in tetraploid Timopheevi wheat is associated with variation in the first intron of the VRN-A1 geneSchematic representation of different VRN-1 alleles including promoter, 1st exon (grey rectangle) and 1st intron. The positions of specific primers are shown above each scheme. Deletions and insertions of MITE transposable elements are indicated by empty and filled triangles, respectively, with sizes (bp) aboveBack to article page