Genetic analysis of resistance to Pseudomonas syringae pv. actinidiae Psa in a kiwifruit progeny test: an application of generalised linear mixed models GLMMsReportar como inadecuado




Genetic analysis of resistance to Pseudomonas syringae pv. actinidiae Psa in a kiwifruit progeny test: an application of generalised linear mixed models GLMMs - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

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, 3:547

Biomedical and Life Sciences

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.

KeywordsKiwifruit Tetraploid Psa resistance Heritability GLMM SAS Electronic supplementary materialThe online version of this article doi:10.1186-2193-1801-3-547 contains supplementary material, which is available to authorized users.

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Autor: Nihal H. De Silva - Luis Gea - Russell Lowe

Fuente: https://link.springer.com/



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