Three-way ordination of rust GWAS using 25 years of one of CIMMYT global wheat breeding programs

Arief, Vivi N., Kroonenberg, Pieter M., DeLacy, Ian H., Dieters, Mark J., Crossa, Jose, Dreisigacker, Susanne, Braun, Hans-J. and Basford, Kaye E. (2010). Three-way ordination of rust GWAS using 25 years of one of CIMMYT global wheat breeding programs. In: Poster Abstracts: Borlaug Global Rust Initiative 2010 Technical Workshops. Borlaug Global Rust Initiative 2010 Technical Workshops, St. Petersburg, Russia, (46-46). 30-31 May 2010.

Author Arief, Vivi N.
Kroonenberg, Pieter M.
DeLacy, Ian H.
Dieters, Mark J.
Crossa, Jose
Dreisigacker, Susanne
Braun, Hans-J.
Basford, Kaye E.
Title of paper Three-way ordination of rust GWAS using 25 years of one of CIMMYT global wheat breeding programs
Conference name Borlaug Global Rust Initiative 2010 Technical Workshops
Conference location St. Petersburg, Russia
Conference dates 30-31 May 2010
Proceedings title Poster Abstracts: Borlaug Global Rust Initiative 2010 Technical Workshops
Publication Year 2010
Sub-type Oral presentation
Start page 46
End page 46
Total pages 1
Language eng
Abstract/Summary High-throughput molecular markers when combined with phenotype data that are routinely collected as part of breeding programs allows cost efficient genome-wide association studies (GWAS) in many agricultural crops. A GWAS was conducted using data from 25 cycles of the CIMMYT Elite Spring Wheat Yield Trials for 20 traits. The concept of trait-associated marker (TAM) was introduced to deal with the problem caused by co-linearity of non-independent markers. A TAM block was defined as a block of closely linked markers in linkage disequilibrium that showed significant association (p<0.0001) for at least one trait. Many TAM blocks for the three rusts (stem, leaf and stripe rust) were identified from analyses of all trials (ALL) and for data from two mega-environments (ME1, ME2) separately. There were thirty-nine common TAM blocks across the three datasets. A three-way ordination of the line × TAM block identified in ALL, ME1 and ME2 dataset × rust trait array showed that the TAM block patterns for stem and stripe rust across lines were independent of each other. The pattern for the common TAM blocks was (with one exception) the same across the three datasets. The results of the three-way ordination presented here provide information about which TAM block combinations were favorable for particular combinations of traits in particular environment for individual lines.
Q-Index Code EX
Q-Index Status Provisional Code
Institutional Status UQ
Additional Notes No. 73

Document type: Conference Paper
Collection: School of Agriculture and Food Sciences
 
Versions
Version Filter Type
Citation counts: Google Scholar Search Google Scholar
Created: Fri, 23 Mar 2012, 17:10:28 EST by Dr Ian Delacy on behalf of School of Agriculture and Food Sciences