4.4 Article

Balancing selection gain and genetic diversity in the genomic planning of crosses

Journal

PLANT BREEDING
Volume 141, Issue 2, Pages 184-193

Publisher

WILEY
DOI: 10.1111/pbr.13003

Keywords

Fusarium head blight; genetic diversity; genomic prediction; recurrent selection; selection gain; wheat

Funding

  1. 'Beyond Europe' FFG project CAWINT [855737]
  2. 'Frontrunner' FFG project TRIBIO [35412407]
  3. BOKU Vienna Open Access Publishing Fund

Ask authors/readers for more resources

This study compares different methods of mate selection indices and finds that the suggested indices outperform commonly used methods in terms of selection gains and genetic diversity, showing potential for germplasm exchange between breeding programmes.
Creating new genetic variation by crossing two or more parents is the initial and often most important step when developing new crop varieties. Hence, several mate selection indices have been suggested to support the planning of crosses in genomic breeding pipelines that have been established in many breeding programmes in recent years. The corresponding index weights are however difficult to determine objectively, and these indices often feature weights determined by laborious grid searches or rules of thumb. The aim of this study was to compare methods that employ the latter approach with mate selection indices based on desired gains in simulations and an empirical Fusarium head blight experiment for winter wheat. The results indicated that the suggested desired gain indices outperform routinely used methods in terms of reaching a favourable balance between the short-term selection gain, long-term selection gain, as well as the genetic diversity. They might have beyond that a high prospect for making a broader spectrum of genetic diversity accessible in the framework of germplasm exchange between breeding programmes.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.4
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available