Table 1.

Mutations Identified in ttg1 Mutant Alleles

AlleleaOriginParentPhenotypebMutation in TTG1
ttg1-1M. KoornneefLerGlabra, transparent testaQ-317→stop codon
ttg1-9J. LarkinColumbiaSimilar to ttg1-1S-282→F
ttg1-13D. OppenheimerRLD1Similar to ttg1-1Deletion
ttg1-15N300Antwerp-1ttg1-like, pale, branchedS-310→stop codon
ttg1-16N319Enkheim-1ttg1-like, dwarfS-310→stop codon
ttg1-17N339Enkheim-1ttg1-like, paleS-310→stop codon
ttg1-18N372Enkheim-1ttg1-like, upright rosetteS-310→stop codon
cN373Enkheim-1ttg1-like, extreme dwarfNDd
ttg1-19N406Enkheim-1ttg1-likeW-183→stop codon
ttg1-20N420Enkheim-1ttg1-like, early floweringS-30→C, S-310→stop codon
eN447Enkheim-1ttg1-like, dwarfQ-317→stop codon
  • a Allele numbers were assigned to mutants from the Kranz collection after checking for lack of anthocyanins in the seed coat and throughout the plant, reduced trichome number, and lack of seed mucilage and examining allelism by crossing to ttg1-1.

  • b The phenotype has been abbreviated to ttg7-like, where glabra and yellow seeds are features listed in the NASC catalog.

  • c Line N373 did not set seed and therefore was not used in crosses. This line was not investigated further.

  • d ND, not determined.

  • e Line N447 was shown to be identical to the ttg1-1 mutant in the Ler background by using sequence and gel blot analyses. Probes from the TTG1 region and from elsewhere in the genome (data not shown) were used for these analyses.