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GrainGenes Gene Class Report: Glaucousness

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Gene Class
Glaucousness
Reference
ReferenceJohnson DA et al. (1983) Yield, water relations, gas exchange and surface reflectances of near-isogenic wheat lines differing in glaucousness. Crop Science 23:318-325.
ReferenceTsunewaki K (1966) Comparative gene analysis of common wheat and its ancestral species. II. Waxiness, growth habit and awnedness. Japanese Journal of Botany 19:175-254.
ReferencePBA-23-44 Plant Breeding Abstracts 23:44.
ReferenceStuckey J and Driscoll CJ WGS-95-1333-Ref#1033.
Abbreviation
W
Character affected
Stem surface waxiness
Gene
W1 (Triticum)
W2 (Triticum)
Iw2 (Triticum)
Locus
W1
W2
Iw2
Comment
Glaucousness is the visual expression of waxiness and is the preferred term. Plants may be either 'waxy, glaucous' (the normal situation), 'waxy, non-glaucous' (e.g., Mentana), or 'low-wax, non-glaucous' (e.g., AUS 2598). The expression of glaucousness depends on the arrangement of wax deposits rather than the amount of wax (430).
This phenotype was originally thought to be controlled by a series of wax-producing genes and an independent series of inhibitors (e.g., 652, 1088), but later work (1033) indicated that the wax-producing genes and the inhibitors are allelic. Hence, recessive alleles and dominant alleles may result in non-glaucousness.
Wheat Gene Catalog Reference
430
ReferenceJohnson DA et al. (1983) Yield, water relations, gas exchange and surface reflectances of near-isogenic wheat lines differing in glaucousness. Crop Science 23:318-325.
1088
ReferenceTsunewaki K (1966) Comparative gene analysis of common wheat and its ancestral species. II. Waxiness, growth habit and awnedness. Japanese Journal of Botany 19:175-254.
652
ReferencePBA-23-44 Plant Breeding Abstracts 23:44.
1033
ReferenceStuckey J and Driscoll CJ WGS-95-1333-Ref#1033.