Crop and environmental attributes underpinning genotype by environment interaction in synthetic-derived bread wheat evaluated in Mexico and Australia

Dreccer, M. Fernanda, Chapman, Scott C., Ogbonnaya, Francis C., Borgognone, M. Gabriela and Trethowan, R. M. (2008). Crop and environmental attributes underpinning genotype by environment interaction in synthetic-derived bread wheat evaluated in Mexico and Australia. In: Francis C. Ogbonnaya, M. van Ginkel and R. Brettell, Genetic Diversity in Synthetics for Wheat Improvement: Proceedings of the 1st Synthetic Wheat Symposium. SynERGE 2006: 1st Synthetic Wheat Symposium, Horsham, VIC, Australia, (447-460). 4-6 Spetember, 2006. doi:10.1071/AR07220


Author Dreccer, M. Fernanda
Chapman, Scott C.
Ogbonnaya, Francis C.
Borgognone, M. Gabriela
Trethowan, R. M.
Title of paper Crop and environmental attributes underpinning genotype by environment interaction in synthetic-derived bread wheat evaluated in Mexico and Australia
Conference name SynERGE 2006: 1st Synthetic Wheat Symposium
Conference location Horsham, VIC, Australia
Conference dates 4-6 Spetember, 2006
Proceedings title Genetic Diversity in Synthetics for Wheat Improvement: Proceedings of the 1st Synthetic Wheat Symposium   Check publisher's open access policy
Journal name Australian Journal of Agricultural Research   Check publisher's open access policy
Place of Publication C S I R O Publishing
Publisher Collingwood, VIC, Australia
Publication Year 2008
Year available 2006
Sub-type Fully published paper
DOI 10.1071/AR07220
Open Access Status
ISSN 0004-9409
Editor Francis C. Ogbonnaya
M. van Ginkel
R. Brettell
Volume 59
Issue 5
Start page 447
End page 460
Total pages 14
Language eng
Formatted Abstract/Summary
Synthetic backcrossed-derived bread wheats (SBWs) from CIMMYT were grown in the north-west of Mexico (CIANO) and sites across Australia during 3 seasons. A different set of lines was evaluated each season, as new materials became available from the CIMMYT crop enhancement program. Previously, we have evaluated both the performance of genotypes across environments and the genotype × environment interaction (G × E). The objective of this study was to interpret the G × E for yield in terms of crop attributes measured at individual sites and to identify the potential environmental drivers of this interaction. Groups of SBWs with consistent yield performance were identified, often comprising closely related lines. However, contrasting performance was also relatively common among sister lines or between a recurrent parent and its SBWs.

Early flowering was a common feature among lines with broad adaptation and/or high yield in the northern Australian wheatbelt, while yields in the southern region did not show any association with the maturity type. Lines with high yields in the southern and northern regions had cooler canopies during flowering and early grain filling. Among the SBWs with Australian genetic backgrounds, lines best adapted to CIANO were tall (>100 cm), with a slightly higher ground cover. These lines also displayed a higher concentration of water-soluble carbohydrates in the stem at flowering, which was negatively correlated with stem number per unit area when evaluated in southern Australia (Horsham). Possible reasons for these patterns are discussed.

Selection for yield at CIANO did not specifically identify the lines best adapted to northern Australia, although they were not the most poorly adapted either. In addition, groups of lines with specific adaptation to the south would not have been selected by choosing the highest yielding lines at CIANO. These findings suggest that selection at CIMMYT for Australian environments may be improved by either trait based selection or yield data combined with trait information. Flowering date, canopy temperature around flowering, tiller density, and water-soluble carbohydrate concentration in the stem at flowering seem likely candidates.
Subjects 1100 Agricultural and Biological Sciences
Keyword Breeding
Drought
Genotype x environment interaction
Synthetic backcrossed-derived bread wheat
Q-Index Code E1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Conference Paper
Collection: Queensland Alliance for Agriculture and Food Innovation
 
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