Query (optional)   in Class  All Allele Author Colleague Collection Assembly Gene Gene Class Gene Product Germplasm Image Journal Keyword Library Locus Map Map Data Marker Pathology Polymorphism Probe Protein QTL Rearrangement Reference Sequence Species Trait Trait Study Two Point Data  

---

GrainGenes Reference Report: TAG-129-2343

[Submit comment/correction]

Reference	TAG-129-2343
Title	Genetic architecture of male floral traits required for hybrid wheat breeding
Journal	Theoretical and Applied Genetics
Year	2016
Volume	129
Pages	2343-2357
Author	Boeven PHG [ Show all 6 ]
Abstract	Hybrid wheat breeding is a promising approach to increase grain yield and yield stability. However, the identification of lines with favorable male floral characteristics required for hybrid seed production currently poses a severe bottleneck for hybrid wheat breeding. This study therefore aimed to unravel the genetic architecture of floral traits and to assess the potential of genomic approaches to accelerate their improvement. To this end, we employed a panel of 209 diverse winter wheat lines assessed for male floral traits and genotyped with genome-wide markers as well as for Rht-B1 and Rht-D1. We found the highest proportion of explained genotypic variance for the Rht-D1 locus (11-24 %), for which the dwarfing allele Rht-D1b had a negative effect on anther extrusion, visual anther extrusion and pollen mass. The genome-wide scan detected only few QTL with small or medium effects, indicating a complex genetic architecture. Consequently, marker-assisted selection yielded only moderate prediction abilities (0.44-0.63), mainly relying on Rht-D1. Genomic selection based on weighted ridge-regression best linear unbiased prediction achieved higher prediction abilities of up to 0.70 for anther extrusion. In conclusion, recurrent phenotypic selection appears most cost-effective for the initial improvement of floral traits in wheat, while genome-wide prediction approaches may be worthwhile when complete marker profiles are already available in a hybrid wheat breeding program.
External Databases	https://doi.org/10.1007/s00122-016-2771-6
Gene	WAPO1 (Triticum)
Summarized in	Dubcovsky J MAS Wheat. Bringing Genomics to the Wheat Fields. WAPO1. A candidate gene for spikelet number per spike MAS Wheat. Marker Assisted Selection in Wheat.

GrainGenes is a product of the Agricultural Research Service of the US Department of Agriculture.