Prospects for Genomewide Selection for Quantitative Traits in Maize

The availability of cheap and abundant molecular markers in maize ( Zea mays L.) has allowed breeders to ask how molecular markers may best be used to achieve breeding progress, without conditioning the question on how breeding has traditionally been done. Genomewide selection refers to marker‐based selection without first identifying a subset of markers with significant effects. Our objectives were to assess the response due to genomewide selection compared with marker‐assisted recurrent selection (MARS) and to determine the extent to which phenotyping can be minimized and genotyping maximized in genomewide selection. We simulated genomewide selection by evaluating doubled haploids for testcross performance…

• UD
  U.S. Department of Agriculture
• CS
  Cooperative State Research, Education, and Extension Service