Telosomic mapping of the homoeologous genes for the long glume phenotype in tetraploid wheat |
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| Authors: | N Watanabe T Sekiya K Sugiyama Y Yamagishi I Imamura |
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| Institution: | (1) Faculty of Agriculture, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan |
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| Abstract: | Triticum turgidum ssp. polonicum and T. ispahanicum were characterized by the long glume phenotype. P
1 gene determines the long glume phenotype of T. polonicum, and locates on chromosome 7A. T. ispahanicum has shorter glume than T. polonicum and the long glumephenotype is determined by P
2 gene located on chromosome 7B. In the present study, aneuploid stocks of `Langdon' durum wheat were used to map the genes, P
1 and P
2. P
1 located on the long arms of chromosome 7A and its map distances from the centromere was 14.5 cM. On chromosome 7B, four loci located as cc (chocolate black chaff) – Pc (purple culm) – centromere – P
2 – cn-BI (chlorina). P
2 located on the long arms of chromosome 7B and its map distances from the centromere was 11.7 cM. It was suggested that a paralogous gene set conditions long glume phenotype in the homoeologous group 7 chromosomes. The P
1 and P
2 genes may be useful as genetic markers in tetraploid wheat. |
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| Keywords: | aneuploid linkage long glume near-isogenic line Triticum polonicum Triticum ispahanicum |
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