Summary
The gene conferring gibberellin insensitivity, Gai 1, was located on chromosome 4A. This gene is associated with the semi-dwarf habit and consequently it was concluded that Rht 1 is carried by 4A. No recombination was found between Gai 1 and Gai 3, the gibberellin insensitivity gene in “Tom Thumb”-type dwarf wheats, indicating that these genes are either alternative alleles at the same locus or are closely linked.
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Gale, M., Marshall, G. The chromosomal location of Gai 1 and Rht 1, genes for Gibberellin insensitivity and semi-dwarfism, in a derivative of Norin 10 wheat. Heredity 37, 283–289 (1976). https://doi.org/10.1038/hdy.1976.88
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DOI: https://doi.org/10.1038/hdy.1976.88
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