Analysis of maize canopy development under water stress and incorporation into the ADEL-Maize model

Song, Youhong, Birch, Colin J. and Hanan, James S. (2008) Analysis of maize canopy development under water stress and incorporation into the ADEL-Maize model. Functional Plant Biology, 35 9-10: 925-935. doi:10.1071/FP08055


Author Song, Youhong
Birch, Colin J.
Hanan, James S.
Title Analysis of maize canopy development under water stress and incorporation into the ADEL-Maize model
Journal name Functional Plant Biology   Check publisher's open access policy
ISSN 1445-4408
Publication date 2008-01-01
Year available 2008
Sub-type Article (original research)
DOI 10.1071/FP08055
Open Access Status
Volume 35
Issue 9-10
Start page 925
End page 935
Total pages 11
Place of publication Australia
Publisher CSIRO
Language eng
Subject C1
070399 Crop and Pasture Production not elsewhere classified
820401 Maize
Abstract Substantial progress in modelling crop architecture has been made under optimal watering conditions; however, crop production is often exposed to water stress. In this research, we develop methods for implementing the simulation of maize (Zea mays L.) canopy architectural development under water stress using data from a maize field trial in 2006–07. Data of leaf number, leaf and internode extension were collected using non-destructive and destructive sampling at 2–3 day intervals. Water stress reduced the extension rate of organs and, therefore, their final length, the reduction being greater as severity of water stress increased. The duration of extension of organs in most phytomers was not significantly affected by water stress. Also, the rate of extension during the linear phase responded linearly to fraction of extractable soil water. An existing 3-D architectural model ADEL-Maize was revised using relationships developed in this study to better incorporate effects of water stress on organ extension and production. Simulated canopy production under three water regimes was validated by comparing predicted final leaf and internode length, plant height and leaf area to independent observations. Theanalysis and simulation showed that maize organ extension and final length under water stress can be adequately represented by simple linear patterns that are easily integrated into models.
Keyword Plant Sciences
Plant Sciences
PLANT SCIENCES
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: 2009 Higher Education Research Data Collection
 
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Created: Thu, 18 Jun 2009, 01:50:08 EST by Siona Saplos on behalf of Office of Sponsored Research