Classifying genotype by environment interactions for targeted germplasm deployment with a focus on Eucalyptus

Brawner, J. T., Lee, D. J., Meder, R., Almeida, A. C. and Dieters, M. J. (2013) Classifying genotype by environment interactions for targeted germplasm deployment with a focus on Eucalyptus. Euphytica, 191 3: 403-414. doi:10.1007/s10681-013-0892-4


Author Brawner, J. T.
Lee, D. J.
Meder, R.
Almeida, A. C.
Dieters, M. J.
Title Classifying genotype by environment interactions for targeted germplasm deployment with a focus on Eucalyptus
Formatted title
Classifying genotype by environment interactions for targeted germplasm deployment with a focus on Eucalyptus
Journal name Euphytica   Check publisher's open access policy
ISSN 0014-2336
1573-5060
Publication date 2013-06
Sub-type Article (original research)
DOI 10.1007/s10681-013-0892-4
Volume 191
Issue 3
Start page 403
End page 414
Total pages 12
Place of publication Dordrecht, Netherlands
Publisher Springer
Collection year 2014
Language eng
Abstract A novel methodology for describing genotype by environment interactions estimated from multi-environment field trials is described and an empirical example using an extensive trial network of eucalypts is presented. The network of experiments containing 65 eucalypts was established in 38 replicated field trials across the tropics and subtropics of eastern Australia, with a selection of well-tested species used to provide a more detailed examination of productivity differentials across environmental gradients. By focusing on changes in species' productivity across environmental gradients, the results are applicable for all species established across the range of environments evaluated in the trial network and simultaneously classify species and environments so that results may be applied across the landscape. The methodology developed was able to explain most (93 %) of the variation in the selected species relative changes in productivity across the various environmental variables examined. Responses were primarily regulated by changes in variables related to water availability and secondarily by temperature related variables. Clustering and ordination can identify groups of species with similar physiological responses to environment and may also guide the parameterisation and calibration of process based models of plant growth. Ordination was particularly useful in the identification of species with distinct environmental response patterns that would be useful as probes for extracting more information from future trials.
Keyword Adaptation
Genotype by environment interactions
Eucalyptus
Corymbia
Functional groups
Process-based model
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Agriculture and Food Sciences
Official 2014 Collection
 
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