Environment characterisation as an aid to wheat improvement in north east Australia

Chenu, K., Hammer, G. L., Dreccer, F. and Chapman, S. C. (2009). Environment characterisation as an aid to wheat improvement in north east Australia. In: Edilberto Redona, Proceedings of the Joint 14th Australasian Plant Breeding Conference and 11th SABRAO Congress. 14th Australasian Plant Breeding & 11th SABRAO Conference, Cairns, Australia, (1-16). 10-14 August 2009.

Author Chenu, K.
Hammer, G. L.
Dreccer, F.
Chapman, S. C.
Title of paper Environment characterisation as an aid to wheat improvement in north east Australia
Conference name 14th Australasian Plant Breeding & 11th SABRAO Conference
Conference location Cairns, Australia
Conference dates 10-14 August 2009
Proceedings title Proceedings of the Joint 14th Australasian Plant Breeding Conference and 11th SABRAO Congress   Check publisher's open access policy
Journal name SABRAO Journal of Breeding and Genetics   Check publisher's open access policy
Place of Publication Bangkok, Thailand
Publisher Society for Advancement of Breeding Research in Asia and Oceania
Publication Year 2009
Year available 2009
Sub-type Fully published paper
ISSN 1029-7073
Editor Edilberto Redona
Volume 41
Issue Supp.
Start page 1
End page 16
Total pages 16
Collection year 2010
Language eng
Formatted Abstract/Summary
Genotype-environment interactions impede crop improvement for complex traits such as yield and drought tolerance. Characterising plant environments is an important step in understanding the nature of the environmental stresses created by combinations of locations, years, management systems and genotypes. Based on crop simulation modelling, environment characterisation can help in the design of breeding trials and their analysis to select well-adapted germplasm. Beyond aiding understanding of genotype-environment interactions, crop simulation studies can also help determine the potential value of key adaptive traits in each environment type.

An environmental characterisation was undertaken for wheat in North East Australia (Queensland and northern New South Wales). Simulations based on more than 100 years of historical climate data were conducted for representative locations, soils and management systems, for the commonly grown cultivar, Hartog. Four environment types based on patterns of predicted crop water stress around flowering
were identified and their frequency of occurrence was determined. Cultivars differing in maturity were simulated and their performance in the different environment types interpreted.

The simulations reproduced the expected genotype-environment interactions between maturity and stress patterns, thus indicating the potential for the technique to unravel more complex trait-environment interactions. Simulations assisted in the understanding of key adaptive traits associated with improved performance in each environment type, with flowering date and the amount of water use pre- and postanthesis
having a major role.
Subjects E1
820507 Wheat
070305 Crop and Pasture Improvement (Selection and Breeding)
Keyword Environment characterisation
Environment type
Water deficit
Wheat
Q-Index Code E1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Proceedings of the Joint 14th Australasian Plant Breeding Conference and 11th SABRAO Congress held on August 9-14, 2009 at Cairns Convention Center, Cairns Australia were published in a special issue (Special Supplement August 2009) of the journal as CD-ROM.

 
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Created: Fri, 23 Apr 2010, 14:45:27 EST by Kaye Hunt on behalf of School of Land, Crop and Food Sciences