Summary
A study of the Vrn genotypes of 642 spring wheats supports the theory that only Vrn1, Vrn2 and Vrn3 exist in Tricticum aestivum. In none of the varieties investigated Vrn4 was present. Seven varieties, which according to literature carry Vrn4, showed to carry Vrn1, Vrn2 and/or Vrn3. Some varieties were mixtures of Vrn-genotypes, which could mislead geneticists in pooled data analysis. Other causes for misinterpretation of the data could be hybrid necrosis, hybrid dwarfness or a wrong determination of plants with a winter habitus. Only Hope was dominant on another Vrn locus. Its haploid Vrn-genotype is Vrn1 vrn2vrn3 Vrn5.
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Stelmakh, A.F. Growth habit in common wheat (Triticum aestivum L. em. Thell.). Euphytica 36, 513–519 (1987). https://doi.org/10.1007/BF00041495
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DOI: https://doi.org/10.1007/BF00041495