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- Publications
- Influence
Ridge Regression and Extensions for Genomewide Selection in Maize
- H. Piepho
- Biology
- 1 July 2009
This paper reviews properties of ridge regres- sion for genomewide (genomic) selection and establishes close relationships with other meth- ods to model genetic correlation among rela- tives,… Expand
Statistical Analysis of Yield Trials by AMMI and GGE: Further Considerations
- H. Gauch, H. Piepho, P. Annicchiarico
- Biology
- 1 May 2008
Recent review articles in this journal have compared the relative merits of two prominent statistical models for analyzing yield-trial data: Additive main effects and multiplicative interaction… Expand
Continuing wildlife population declines and range contraction in the Mara region of Kenya during 1977-2009
- J. Ogutu, J. Ogutu, N. Owen‐Smith, H. Piepho, M. Said
- Biology
- 1 October 2011
Populations of many wild ungulate species in Africa are in decline largely because of land-use changes and other human activities. Analyses that document these declines and advance our understanding… Expand
Computing Heritability and Selection Response From Unbalanced Plant Breeding Trials
- H. Piepho, J. Möhring
- Biology, Medicine
- Genetics
- 1 November 2007
Heritability is often used by plant breeders and geneticists as a measure of precision of a trial or a series of trials. Its main use is for computing the response to selection. Most formulas… Expand
Comparison of Mixed-Model Approaches for Association Mapping
- B. Stich, J. Möhring, H. Piepho, M. Heckenberger, E. Buckler, A. Melchinger
- Biology, Medicine
- Genetics
- 1 March 2008
Association-mapping methods promise to overcome the limitations of linkage-mapping methods. The main objectives of this study were to (i) evaluate various methods for association mapping in the… Expand
Genomic selection using regularized linear regression models: ridge regression, lasso, elastic net and their extensions
- J. Ogutu, Torben Schulz-Streeck, H. Piepho
- Medicine, Mathematics
- BMC Proceedings
- 21 May 2012
BackgroundGenomic selection (GS) is emerging as an efficient and cost-effective method for estimating breeding values using molecular markers distributed over the entire genome. In essence, it… Expand
ANALYZING GENOTYPE-ENVIRONMENT DATA BY MIXED MODELS WITH MULTIPLICATIVE TERMS
- H. Piepho
- Mathematics
- 1 June 1997
where Yij mean yield of ith genotype in jth environment, , = general mean, gi = effect of ith genotype, ej = effect of jth environment, (ge)ij = interaction of ith genotype and jth environment, Eij… Expand
An Algorithm for a Letter-Based Representation of All-Pairwise Comparisons
- H. Piepho
- Computer Science
- 1 June 2004
TLDR
Efficient phosphorus application strategies for increased crop production in sub-Saharan West Africa
- A. Buerkert, A. Bationo, H. Piepho
- Biology
- 20 August 2001
Abstract Comparable data are lacking from the range of environments found in sub-Saharan West Africa to draw more general conclusions about the relative merits of locally available rockphosphate… Expand
The area under the disease progress stairs: calculation, advantage, and application.
- Ivan Simko, H. Piepho
- Biology, Medicine
- Phytopathology
- 12 March 2012
The area under the disease progress curve (AUDPC) is frequently used to combine multiple observations of disease progress into a single value. However, our analysis shows that this approach severely… Expand