Overview
Background
Graeme is a Professor in Crop Science at the Centre for Crop Science in the Queensland Alliance for Agriculture and Food Innovation (QAAFI), which is a research institute of The University of Queensland, Australia.
Graeme conducts research on the physiology and genetics of complex adaptive traits in field crops with a focus on water productivity in cereals. His research underpins the development of mathematical models of crop growth, development and yield that enable simulation of consequences of genetic and management manipulation of crops in specific target environments.
His research approach provides unique opportunities to:
· Aid crop management and design for enhanced production in water-limited environments
· Enhance the utility of molecular breeding for drought adaptation, and
· Identify avenues to cope with climate risks in field crop production.
He is a Fellow of the Australian Agriculture Institute and was awarded the Australian Medal for Agricultural Science in 2013 and Farrer Memorial Medal in 2012.
Availability
- Professor Graeme Hammer is:
- Not available for supervision
- Media expert
Fields of research
Qualifications
- Bachelor (Honours) of Science in Forestry, University of Melbourne
- Bachelor of Arts in Mathematics, The University of Queensland
- Masters (Research) of Forest Science, University of Melbourne
- Doctor of Philosophy, Kansas State University
Research impacts
Prof. Hammer's research capabilities are focused on the major cereal crops: sorghum, maize and wheat. His expertise in crop ecophysiology and modelling enable Graeme to investigate traits and management systems that have the potential to deliver productivity gains in water-limited production environments. He collaborates closely with plant breeders, geneticists, molecular biologists and agronomists in a range of national and international research projects in both public and private sectors. He is a Chief Investigator in the ARC Centre of Excellence in Plant Success in Nature and Agriculture (www.plantsuccess.org) and leads the UQ link to the APSIM Initiative, which is responsible for the on-going development of the APSIM modelling software platform (www.apsim.info), which is now used world-wide.
His research has focussed on traits and management systems that influence resource capture and resource use efficiency, including tillering and canopy development, root system architecture, maturity, carbon and nitrogen partitioning, light use and transpiration efficiencies. The detailed understanding that transpires from such work can generate approaches to phenotyping that provide avenues for linking with advanced approaches to molecular breeding and crop improvement.
Works
Search Professor Graeme Hammer’s works on UQ eSpace
2025
Journal Article
Extended grain filling has potential to improve yield in grain sorghum
Otwani, Daniel, McLean, Greg, Hammer, Graeme, Cruickshank, Alan, Hunt, Colleen, Tao, Yongfu, Koltunow, Anna, Mace, Emma and Jordan, David (2025). Extended grain filling has potential to improve yield in grain sorghum. Journal of Experimental Botany. doi: 10.1093/jxb/eraf117
2024
Journal Article
Influence of crop development and fruit retention on the timing of crop maturity in Ultra-narrow row cotton
Roche, R., Hammer, G. L., Milroy, S. P. and Bange, M. P. (2024). Influence of crop development and fruit retention on the timing of crop maturity in Ultra-narrow row cotton. Field Crops Research, 317 109542, 109542. doi: 10.1016/j.fcr.2024.109542
2024
Conference Publication
Prediction of non-additive genetic effects with hierarchical genomic prediction models
Powell, Owen, McLean, Greg, Brider, Jason, Saddigh, Joe, Technow, Frank, Tang, Tom, Totir, Radu, Messina, Carlos D., Hammer, Graeme and Cooper, Mark (2024). Prediction of non-additive genetic effects with hierarchical genomic prediction models. International Conference of Quantitative Genetics (ICQG) 7, Vienna, Austria, 22-26 July 2024. doi: 10.6084/m9.figshare.26425735.v1
2024
Journal Article
APSIM-based modeling approach to understand sorghum production environments in Mali
Diancoumba, Madina, Kholova, Jana, Adam, Myriam, Famanta, Mahamoudou, Clerget, Benoit, Traore, Pierre C. S., Weltzien, Eva, Vacksmann, Michel, Mclean, Greg, Hammer, Graeme L., van Oosterom, Erik J. and Vadez, Vincent (2024). APSIM-based modeling approach to understand sorghum production environments in Mali. Agronomy for Sustainable Development, 44 (3) 25, 1-16. doi: 10.1007/s13593-023-00909-5
2024
Journal Article
Seasonal dynamics of fallow and cropping lands in the broadacre cropping region of Australia
Xie, Zunyi, Zhao, Yan, Jiang, Ruizhu, Zhang, Miao, Hammer, Graeme, Chapman, Scott, Brider, Jason and Potgieter, Andries B. (2024). Seasonal dynamics of fallow and cropping lands in the broadacre cropping region of Australia. Remote Sensing of Environment, 305 114070, 1-14. doi: 10.1016/j.rse.2024.114070
2024
Journal Article
Contrasting leaf‐scale photosynthetic low‐light response and its temperature dependency are key to differences in crop‐scale radiation use efficiency
Wu, Alex, Truong, Sandra Huynh, McCormick, Ryan, van Oosterom, Erik J., Messina, Carlos D., Cooper, Mark and Hammer, Graeme L. (2024). Contrasting leaf‐scale photosynthetic low‐light response and its temperature dependency are key to differences in crop‐scale radiation use efficiency. New Phytologist, 241 (6), 2435-2447. doi: 10.1111/nph.19537
2023
Conference Publication
APSIM-WGP: a software platform to predict crop GxExM interactions
Powell, Owen, McLean, Greg, Brider, Jason, Hammer, Graeme and Cooper, Mark (2023). APSIM-WGP: a software platform to predict crop GxExM interactions. GxExM Symposium II, Gainesville, FL USA, 6-7 November 2023.
2023
Journal Article
Modelling the dynamics and phenotypic consequences of tiller outgrowth and cessation in sorghum
Hammer, G. L., McLean, G., Kholová, J. and van Oosterom, E. (2023). Modelling the dynamics and phenotypic consequences of tiller outgrowth and cessation in sorghum. in silico Plants, 5 (2) diad019, 1-14. doi: 10.1093/insilicoplants/diad019
2023
Book Chapter
Genotype and water limitation effects on transpiration efficiency in sorghum
Mortlock, Miranda Y. and Hammer, Graeme L. (2023). Genotype and water limitation effects on transpiration efficiency in sorghum. Water use in crop production. (pp. 265-286) edited by M. B. Kirkham. Boca Raton, FL, USA: CRC Press. doi: 10.1201/9781003578215-11
2023
Conference Publication
Advances in the study of biochemical, morphological and physiological traits of wheat and sorghum crops in australia using hyperspectral data and machine learning
Potgieter, A. B., Camino, C., Poblete, T., Zhi, X., Reynolds-Massey-Reed, S., Zhao, Y., Belwalkar, A., Ruizhu, J., George-Jaeggli, B., Chapman, S., Jordan, D., Wu, A., Hammer, G. L. and J, Zarco-Tejada P. (2023). Advances in the study of biochemical, morphological and physiological traits of wheat and sorghum crops in australia using hyperspectral data and machine learning. 2023 IEEE International Geoscience and Remote Sensing Symposium, Pasadena, CA USA, 16-21 July 2023. Piscataway, NJ USA: Institute of Electrical and Electronics Engineers. doi: 10.1109/igarss52108.2023.10282230
2023
Journal Article
Two decades of harnessing standing genetic variation for physiological traits to improve drought tolerance in maize
Messina, Carlos D., Gho, Carla, Hammer, Graeme L., Tang, Tom and Cooper, Mark (2023). Two decades of harnessing standing genetic variation for physiological traits to improve drought tolerance in maize. Journal of Experimental Botany, 74 (16), 4847-4861. doi: 10.1093/jxb/erad231
2023
Other Outputs
In Silico Sorghum GxExM Dataset For Prediction Algorithm Comparisons
Owen Powell, Greg McLean, Jason Brider, Mark Cooper and Graeme Hammer (2023). In Silico Sorghum GxExM Dataset For Prediction Algorithm Comparisons. figShare. (Dataset) doi: 10.6084/m9.figshare.23789685.v2
2023
Conference Publication
Evaluating variation in stem strength in response to artificial drought stress amongst sorghum genotypes
Geetika, Geetika, Borrell, Andrew, Thornton, Erin, Hunt, Colleen, Chapman, Scott, Philp, Trevor, Fekybelu, Solomon, Potgieter, Andries, Godwin, Ian, Hammer, Graeme, Mace, Emma and Jordan, David (2023). Evaluating variation in stem strength in response to artificial drought stress amongst sorghum genotypes. Global Sorghum Conference Sorghum in the 21st Century, Montpellier, France, 5-9 June 2023.
2023
Conference Publication
Evaluating variation in stem strength in response to artificial drought stress amongst sorghum genotypes
Geetika, Geetika, Borrell, Andrew, Thornton, Erin, Reed, Sean, Hunt, Colleen, Chapman, Scott, Philp, Trevor, Fekybelu, Solomon, Potgieter, Andries, Godwin, Ian, Hammer, Graeme, Mace, Emma and Jordan, David (2023). Evaluating variation in stem strength in response to artificial drought stress amongst sorghum genotypes. Australian Summer Grains Conference, Gold Coast, QLD Australia, 13-15 March 2023.
2023
Journal Article
Differences in temperature responses among phenological processes in diverse Ethiopian sorghum germplasm can affect their specific adaptation to environmental conditions
Tirfessa, Alemu, McLean, Greg, Baker, Peter, Mortlock, Miranda, Hammer, Graeme and van Oosterom, Erik (2023). Differences in temperature responses among phenological processes in diverse Ethiopian sorghum germplasm can affect their specific adaptation to environmental conditions. Annals of Botany, 131 (4), 601-611. doi: 10.1093/aob/mcad011
2023
Journal Article
Retrospective study in US commercial sorghum breeding: II. Physiological changes associated to yield gain
Demarco, Paula A., Mayor, Laura, Rotundo, José L., Prasad, P. V. Vara, Morris, Geoffrey P., Fernandez, Javier A., Tamagno, Santiago, Hammer, Graeme, Messina, Carlos D. and Ciampitti, Ignacio A. (2023). Retrospective study in US commercial sorghum breeding: II. Physiological changes associated to yield gain. Crop Science, 63 (2), 867-878. doi: 10.1002/csc2.20845
2023
Conference Publication
Hierarchical Gene-Phenotype Maps as a Framework to Predict GxExM Interactions
Powell, Owen, McLean, Greg, Brider, Jason, Technow, Frank, Tang, Tom, Messina, Carlos D., Hammer, Graeme and Cooper, Mark (2023). Hierarchical Gene-Phenotype Maps as a Framework to Predict GxExM Interactions. Quantitative Genetics and Genomics Gordon Research Conference, Ventura, CA, United States, 12-17 February 2023.
2023
Journal Article
Retrospective study in US commercial sorghum breeding: I. Genetic gain in relation to relative maturity
Mayor, L., Demarco, P., Lira, S., Fang, Y., Abadie, T., Gambin, B., Hammer, G., Ciampitti, I., Cooper, M. and Messina, C. (2023). Retrospective study in US commercial sorghum breeding: I. Genetic gain in relation to relative maturity. Crop Science, 63 (2), 501-510. doi: 10.1002/csc2.20897
2023
Journal Article
Modeling adaptation of sorghum in Ethiopia with APSIM—opportunities with G×E×M
Tirfessa, Alemu, Getachew, Fikadu, McLean, Greg, van Oosterom, Erik, Jordan, David and Hammer, Graeme (2023). Modeling adaptation of sorghum in Ethiopia with APSIM—opportunities with G×E×M. Agronomy for Sustainable Development, 43 (1) 15, 1-13. doi: 10.1007/s13593-023-00869-w
2023
Book Chapter
Predicting Genotype × Environment × Management (G × E × M) interactions for the design of crop improvement strategies: integrating breeder, agronomist, and farmer perspectives
Cooper, Mark, Messina, Carlos D., Tang, Tom, Gho, Carla, Powell, Owen M., Podlich, Dean W., Technow, Frank and Hammer, Graeme L. (2023). Predicting Genotype × Environment × Management (G × E × M) interactions for the design of crop improvement strategies: integrating breeder, agronomist, and farmer perspectives. Plant breeding reviews. (pp. 467-585) edited by Irwin Goldman. Hoboken, NJ, United States: Wiley Blackwell. doi: 10.1002/9781119874157.ch8
Funding
Current funding
Past funding
Supervision
Availability
- Professor Graeme Hammer is:
- Not available for supervision
Supervision history
Current supervision
-
Doctor Philosophy
Unlocking the potential of crop resource use efficiencies
Principal Advisor
Other advisors: Dr Erik Van Oosterom, Dr Alex Wu, Dr Peter Baker
-
Doctor Philosophy
Unlocking the potential of crop resource use efficiencies
Principal Advisor
Other advisors: Dr Erik Van Oosterom, Dr Alex Wu, Dr Peter Baker
-
Doctor Philosophy
Connecting gene networks to crop models to leverage prior knowledge for crop breeding.
Associate Advisor
Other advisors: Professor David Jordan, Dr Erik Van Oosterom, Dr Nicole Fortuna, Professor Christine Beveridge
-
Doctor Philosophy
Dissection of genetics and physiology associated with improved transpiration efficiency in sorghum
Associate Advisor
Other advisors: Dr Erik Van Oosterom, Dr Alex Wu, Dr Peter Baker
-
Doctor Philosophy
Network biology of quantitative traits in sorghum
Associate Advisor
Other advisors: Professor Mark Cooper, Professor Emma Mace, Dr Colleen Hunt, Dr Sofie Pearson, Professor David Jordan
-
Doctor Philosophy
Advancing crop growth simulation capabilities for optimising crop productivity
Associate Advisor
Other advisors: Dr Erik Van Oosterom, Dr Alex Wu, Dr Peter Baker
Completed supervision
-
2016
Doctor Philosophy
The physiological basis of genetic improvement in maize (Zea mays L.) yield in the US Corn Belt
Principal Advisor
Other advisors: Dr Erik Van Oosterom
-
2014
Doctor Philosophy
The physiology and genetic of high temperature effects on growth and development of sorghum
Principal Advisor
Other advisors: Dr Erik Van Oosterom, Dr Vijaya Singh
-
2013
Doctor Philosophy
Genetic mapping and modelling of tillering in Sorghum
Principal Advisor
Other advisors: Dr Erik Van Oosterom, Professor David Jordan
-
2010
Doctor Philosophy
Genotypic variablity in structure and function of Sorghum root systems
Principal Advisor
Other advisors: Dr Erik Van Oosterom, Professor David Jordan
-
2009
Doctor Philosophy
The Physiology and Genetics of Height-Yield Associations in Sorghum
Principal Advisor
Other advisors: Professor Ian Godwin, Professor David Jordan
-
2008
Doctor Philosophy
Modelling genetic and environmental control of tillering in Sorghum
Principal Advisor
Other advisors: Dr Erik Van Oosterom
-
2007
Doctor Philosophy
PHYSIOLOGICAL DETERMINANTS OF YIELD AND POTENTIAL IN ULTRA-NARROW ROW COTTON
Principal Advisor
Other advisors: Emeritus Professor Shu Fukai
-
2022
Doctor Philosophy
Physiological determinants of potential yield in mungbean (Vigna radiata (L.) Wilczek)
Associate Advisor
Other advisors: Dr Vijaya Singh, Dr Millicent Smith
-
2022
Doctor Philosophy
Hyperspectral sensing methods and genome-wide association studies to improve photosynthetic capacity in sorghum
Associate Advisor
Other advisors: Dr Alex Wu, Associate Professor Andries Potgieter, Dr Barbara George-Jaeggli
-
2020
Doctor Philosophy
Impact of variable water limited environments on grain sorghum yield and lodging in Australia
Associate Advisor
Other advisors: Professor Emma Mace, Professor David Jordan
-
2019
Doctor Philosophy
Identifying sorghum [Sorghum bicolor (L.) Moench] plant types adapted to moisture stress areas of Ethiopia
Associate Advisor
Other advisors: Professor David Jordan, Dr Erik Van Oosterom
-
2017
Master Philosophy
Role of Leaf Photosynthesis and Stomatal Conductance in determining the Genotypic Variation in Whole-Plant Transpiration Efficiency (TE) in Sorghum
Associate Advisor
Other advisors: Dr Barbara George-Jaeggli, Dr Erik Van Oosterom
-
2013
Master Philosophy
Role of Transpiration Efficiency and Dry Matter Partitioning in Drought Adaptation of 2dwarf and 3dwarf sorghum
Associate Advisor
Other advisors: Dr Erik Van Oosterom
-
2011
Doctor Philosophy
Development and flowering of Brunonia australis and Calandrinia sp.: influence of temperature, daylength and vernalisation
Associate Advisor
-
2003
Doctor Philosophy
THE CONTRIBUTION OF OSMOTIC ADJUSTMENT TO GRAIN YIELD IN SORGHUM PRODUCTION ENVIRONMENTS
Associate Advisor
Other advisors: Professor Mark Cooper
-
2003
Doctor Philosophy
QUANTIFYING NITROGEN EFFECT IN CROP GROWTH PROCESS IN SUNFLOWER AND MAIZE
Associate Advisor
Other advisors: Professor Scott Chapman, Emeritus Professor Shu Fukai
Media
Enquiries
Contact Professor Graeme Hammer directly for media enquiries about:
- Crop - adaptation, physiology
- Crop improvement
- Crop modelling
- Crop physiology
- Crop-climate interactions
- Grain crop production systems
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