GrainGenes Reference Report: TCJ-3-37
Reference
TCJ-3-37
Title
Mapping the glaucousness suppressor Iw1 from wild emmer wheat 'PI 481521'.
Journal
The Crop Journal
Year
2015
Volume
3
Pages
37-45
Author
Xu Z Yuan C Wang J Fu D Wu J
Abstract
Many species of Triticeae display a glaucous phenotype. In wheat, glaucousness/waxiness on spikes, leaves and shoots is controlled by wax production genes (W loci) and epistatic inhibitors (Iw loci). In this study, a suppressor of glaucousness from wild emmer wheat (Triticum turgidum ssp. dicoccoides) accession 'PI 481521' was investigated in a pair of durum (T. turgidum ssp. durum cv. 'Langdon', LDN)-wild emmer wheat chromosome substitution lines, LDN and 'LDNDIC521-2B'. Genetic analysis revealed that the non-glaucous phenotype of LDNDIC521-2B was controlled by the dominant glaucous suppressor Iw1 on the short arm of chromosome 2B. In total, 371 2B-specific marker differences were identified between LDN and LDNDIC521-2B. The location of the Iw1 gene was mapped using an F2 population that stemmed from LDN and LDNDIC521-2B, generating a partial linkage map that included 19 simple sequence repeats (SSR) and ten gene-based markers. On the current map, the Iw1 gene was located within the Xgwm614-BE498111 interval, and cosegregated with BQ788707, CD893659, CD927782, CD938589, and Xbarc35. Mapping of Iw1 in LDNDIC521-2B, a publically accessible and widely distributed line, will provide valuable information for marker-assisted selection of the agronomically important trait of glaucousness.
External Databases
DOI: 10.1016/j.cj.2014.09.004
Gene
Iw1 (Triticum)
GrainGenes is a product of the Agricultural Research Service of the US Department of Agriculture.
GrainGenes Reference Report: TCJ-3-37
|
| ||||||
|
| ||||||
|
| ||||||
|
| ||||||
|
| ||||||
|
| ||||||
|
| ||||||
|
| ||||||
|
| ||||||
|
|
GrainGenes is a product of the Agricultural Research Service of the US Department of Agriculture. | |||