Three major gene loci determining the anthocyanin pigmentation of coleoptiles were mapped on the short arms of chromosomes 7A, 7B and 7D, respectively. All three genes map about 15 to 20 cM distal from the centromere and, therefore, it may be concluded that they are members of a homoeologous series and should be designated Rc-A1, Rc-B1 and Rc-D1, respectively. Further homoeologous loci exist in Triticum durum, Triticum tauschii, and most probably in Secale cereale and Hordeum vulgare. By analyzing a synthetic×cultivated wheat cross (ITMI mapping population) under different environmental conditions it was shown that the expression of the genes determining anthocyanin pigmentation of the coleoptiles varies. One additional locus was detected on chromosome 4BL. Beside the mapping data, results of a screening for red coleoptile color genes in 468 mainly European wheat varieties are presented.
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Received: 2 July 2001 / Accepted: 6 August 2001
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Khlestkina, E., Pestsova, E., Röder, M. et al. Molecular mapping, phenotypic expression and geographical distribution of genes determining anthocyanin pigmentation of coleoptiles in wheat (Triticum aestivum L.). Theor Appl Genet 104, 632–637 (2002). https://doi.org/10.1007/s00122-001-0788-x
- Keywords Anthocyanin pigmentation
- Coleoptile color
- Genetic mapping
- Triticum aestivum