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| Content Provider | PubMed Central |
|---|---|
| Author | Silva, Nihal H. De Gea, Luis Lowe, Russell |
| Abstract | Linear Mixed models (LMMs) that incorporate genetic and spatial covariance structures have been used for many years to estimate genetic parameters and to predict breeding values in animal and plant breeding. Although the theoretical aspects for extending LMM to generalised linear mixed models (GLMMs) have been around for some time, suitable software has been developed only within the last decade or so. The GLIMMIX procedure in SAS® is becoming popular for fitting GLMMs in various disciplines. Applications of GLMMs to genetic analysis have been limited, probably because of the complexity of the models used. This is particularly so for Proc GLIMMIX because, unlike ASReml software, it is not specifically tailored for analysis of breeding data and some pre-procedure coding is necessary. Binary data that fits the GLMM framework is commonly encountered in breeding experiments, such as when evaluating individuals for resistance by observing the presence or absence of disease. Bacterial canker (Psa) caused by Pseudomonas syringae pv. actinidiae is a serious disease of kiwifruit in New Zealand and other kiwifruit-producing countries. Data from a progeny test trial was available to identify parents with high breeding values for resistance. We successfully applied the GLIMMIX procedure for this purpose. Heritability for resistance was moderate, and we identified two parents and their family as having high potential for Psa resistance breeding. There are several potential pitfalls when using GLMMs with binary data and these are briefly discussed. |
| Related Links | http://dx.doi.org/10.1186/2193-1801-3-547 |
| Starting Page | 547 |
| File Format | |
| ISSN | 21931801 |
| e-ISSN | 21931801 |
| Journal | SpringerPlus |
| Volume Number | 3 |
| Language | English |
| Publisher | Springer International Publishing |
| Publisher Date | 2014-01-01 |
| Access Restriction | Open |
| Rights Holder | Springer International Publishing |
| Subject Keyword | Research in Higher Education |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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