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Liguleless phenotypes of wheat lack ligule and auricle structures on all leaves of the plant. Two recessive genes principally control the liguleless character in tetraploid wheat. The F2 progenies of k17769 (liguleless mutant)/Triticum dicoccoides and k17769/T. dicoccum segregated in a 15:1 ratio, whereas the F2 progenies of k17769/T. durum and k17769/T. turgidum segregated in a 3:1 ratio. A new gene,...
The liguleless phenotype in wheat lacks ligules and auricles on all plant leaves. Two duplicate dominant genes (Lg1 and Lg3) principally control the presence of ligules in tetraploid wheat. Although the Lg3 gene was tentatively located in chromosome 2A, a genetic stock of Triticum durum Desf. (2n = 4x = 28, BBAA genome) having genotype lg1lg1Lg3Lg3 has not been available. We...
It has been suggested that the non-allelic lg2 and Lgt alleles, that confer liguleless phenotypes, are present in chromosome 2D. We hypothesized that the naturally occurring liguleless phenotype present in polyploid wheat was a typical example of loss of dominant duplicated alleles, a process that has been described as genetic diploidisation. In the present study, we obtained the base sequence of...
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