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Catalogue of Gene Symbols

Gene Symbol detail

Gene Symbold
Class Level 1 Gibberellic Acid Response (insensitivity)
Level 2
Level 3
Level 4
Symbol Wild Type Gai3
Allele
Synonyms GAI3{565,1246}
Chromosomes 4B{413}, 4BS{980}
Germplasms i:See{408}, v:Minister Dwarf{413}, v:Selection D6899{359}, v:Tom Thumb{405}, v:Tom Thumb Der.{565,567}
Comment In wheats with Gai3, the aleurone layer fails to respond to applied GA {405}.
Two studies involving crosses between Tom Thumb derivatives and tall parents suggested that gibberellic acid insensitivity and reduced height were controlled by one gene, i.e., Gai3 {359,413}. In a third study involving a Tom Thumb derivative, recombinants were isolated, indicating separate but linked genes, i.e., Gai3 and Rht-B1c {565,567}. Further evidence was obtained for linkage between genes for gibberellic acid insensitivity and Norin 10 genes for reduced height in hexaploid {568} and durum {720} wheats. Hu & Konzak {567} reported 27% recombination between Gai1 and Rht-B1b and 10% recombination between Gai2 and Rht-D1b in hexaploid wheats involving Norin 10 and Suwon 92 derivatives. In durum derived from crosses involving Norin 10, 15% recombination was obtained between one of the genes for reduced height and gibberellic acid insensitivity {1246,1247}. Gale & Law {403} considered Gai1 and Rht-B1b, Gai2 and Rht-D1b, Gai3/ and Rht-B1c to be pleiotropic genes.

Related Reference
359 : Fick GN & Qualset CO 1975
403 : Gale MD & Law CN 1976
405 : Gale MD & Marshall GA 1975
408 : Gale MD & Youssifian S 1983
413 : Gale MD, Law CN, Marshall GA & Worland AJ 1975
565 : Hu ML 1974
567 : Hu ML & Konzak CF 1974
568 : Hu ML, Favret G, Favret EA, Donaldson E & Allan RE 1972
720 : Konzak CF, Sadam M & Donaldson E 1973
980 : McVittie JA, Gale MD, Marshall GA & Westcott B 1978
1246 : Sadam M 1974
1247 : Sadam M 1975
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