Search Results - "HAMMER, Graeme L"

The shifting influence of drought and heat stress for crops in northeast Australia by Lobell, David B., Hammer, Graeme L., Chenu, Karine, Zheng, Bangyou, McLean, Greg, Chapman, Scott C.

“…Characterization of drought environment types (ETs) has proven useful for breeding crops for drought‐prone regions. Here, we consider how changes in climate…”
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The critical role of extreme heat for maize production in the United States by Lobell, David B., Hammer, Graeme L., McLean, Greg, Messina, Carlos, Roberts, Michael J., Schlenker, Wolfram

“…Statistical analysis of maize yields in the United States reveals a strong negative response to very high temperatures, and a relatively weak response to…”
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Greater Sensitivity to Drought Accompanies Maize Yield Increase in the U.S. Midwest by Lobell, David B., Roberts, Michael J., Schlenker, Wolfram, Braun, Noah, Little, Bertis B., Rejesus, Roderick M., Hammer, Graeme L.

“…A key question for climate change adaptation is whether existing cropping systems can become less sensitive to climate variations. We use a field-level data…”
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Quantifying impacts of enhancing photosynthesis on crop yield by Wu, Alex, Hammer, Graeme L., Doherty, Al, von Caemmerer, Susanne, Farquhar, Graham D.

“…Enhancing photosynthesis is widely accepted as critical to advancing crop yield. However, yield consequences of photosynthetic manipulation are confounded by…”
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Predicting Wheat Yield at the Field Scale by Combining High-Resolution Sentinel-2 Satellite Imagery and Crop Modelling by Zhao, Yan, Potgieter, Andries B, Zhang, Miao, Wu, Bingfang, Hammer, Graeme L

“…Accurate prediction of crop yield at the field scale is critical to addressing crop production challenges and reducing the impacts of climate variability and…”
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Tackling G × E × M interactions to close on-farm yield-gaps: creating novel pathways for crop improvement by predicting contributions of genetics and management to crop productivity by Cooper, Mark, Voss-Fels, Kai P., Messina, Carlos D., Tang, Tom, Hammer, Graeme L.

“…Key message Climate change and Genotype-by-Environment-by-Management interactions together challenge our strategies for crop improvement. Research to advance…”
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Can Changes in Canopy and/or Root System Architecture Explain Historical Maize Yield Trends in the U.S. Corn Belt by Hammer, Graeme L, Dong, Zhanshan, McLean, Greg, Doherty, Al, Messina, Carlos, Schussler, Jeff, Zinselmeier, Chris, Paszkiewicz, Steve, Cooper, Mark

“…Continuous increase in the yield of maize (Zea mays L.) in the U.S. Corn Belt has involved an interaction with plant density. A number of contributing traits…”
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Stay-green alleles individually enhance grain yield in sorghum under drought by modifying canopy development and water uptake patterns by Borrell, Andrew K., Oosterom, Erik J., Mullet, John E., George‐Jaeggli, Barbara, Jordan, David R., Klein, Patricia E., Hammer, Graeme L.

“…Stay-green is an integrated drought adaptation trait characterized by a distinct green leaf phenotype during grain filling under terminal drought. We used…”
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Multi-Spectral Imaging from an Unmanned Aerial Vehicle Enables the Assessment of Seasonal Leaf Area Dynamics of Sorghum Breeding Lines by Potgieter, Andries B, George-Jaeggli, Barbara, Chapman, Scott C, Laws, Kenneth, Suárez Cadavid, Luz A, Wixted, Jemima, Watson, James, Eldridge, Mark, Jordan, David R, Hammer, Graeme L

“…Genetic improvement in sorghum breeding programs requires the assessment of adaptation traits in small-plot breeding trials across multiple environments. Many…”
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Adapting APSIM to model the physiology and genetics of complex adaptive traits in field crops by Hammer, Graeme L, van Oosterom, Erik, McLean, Greg, Chapman, Scott C, Broad, Ian, Harland, Peter, Muchow, Russell C

“…Progress in molecular plant breeding is limited by the ability to predict plant phenotype based on its genotype, especially for complex adaptive traits…”
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Genotypic variation in seedling root architectural traits and implications for drought adaptation in wheat (Triticum aestivum L.) by Manschadi, Ahmad M, Hammer, Graeme L, Christopher, John T, deVoil, Peter

“…Root system characteristics are of fundamental importance to soil exploration and below-ground resource acquisition. Root architectural traits determine the in…”
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Connecting Biochemical Photosynthesis Models with Crop Models to Support Crop Improvement by Wu, Alex, Song, Youhong, van Oosterom, Erik J, Hammer, Graeme L

“…The next advance in field crop productivity will likely need to come from improving crop use efficiency of resources (e.g., light, water, and nitrogen),…”
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Modeling QTL for complex traits: detection and context for plant breeding by Cooper, Mark, van Eeuwijk, Fred A, Hammer, Graeme L, Podlich, Dean W, Messina, Carlos

“…The genetic architecture of a trait is defined by the set of genes contributing to genetic variation within a reference population of genotypes together with…”
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physiological framework to explain genetic and environmental regulation of tillering in sorghum by Alam, Mohammad Mobashwer, Hammer, Graeme L, Oosterom, Erik J, Cruickshank, Alan W, Hunt, Colleen H, Jordan, David R

“…Tillering determines the plant size of sorghum (Sorghum bicolor) and an understanding of its regulation is important to match genotypes to prevalent growing…”
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On the dynamic determinants of reproductive failure under drought in maize by Messina, Carlos D, Hammer, Graeme L, McLean, Greg, Cooper, Mark, van Oosterom, Erik J, Tardieu, Francois, Chapman, Scott C, Doherty, Alastair, Gho, Carla

“…Reproductive failure under drought in maize (Zea mays) is a major cause of instability in global food systems. While there has been extensive research on maize…”
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Detecting Sorghum Plant and Head Features from Multispectral UAV Imagery by Zhao, Yan, Zheng, Bangyou, Chapman, Scott C., Laws, Kenneth, George-Jaeggli, Barbara, Hammer, Graeme L., Jordan, David R., Potgieter, Andries B.

“…In plant breeding, unmanned aerial vehicles (UAVs) carrying multispectral cameras have demonstrated increasing utility for high-throughput phenotyping (HTP) to…”
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Water Use Efficiency as a Constraint and Target for Improving the Resilience and Productivity of C 3 and C 4 Crops by Leakey, Andrew D B, Ferguson, John N, Pignon, Charles P, Wu, Alex, Jin, Zhenong, Hammer, Graeme L, Lobell, David B

“…The ratio of plant carbon gain to water use, known as water use efficiency (WUE), has long been recognized as a key constraint on crop production and an…”
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Yield and Maturity of Ultra-Narrow Row Cotton in High Input Production Systems by Brodrick, Rose, Bange, Michael P, Milroy, Stephen P, Hammer, Graeme. L

“…Ultra-narrow row (UNR) cotton (Gossypium hirsutum L.), with rows spaced <40 cm apart, has the potential to reduce the time to maturity as UNR as fewer bolls…”
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Nitrogen Dynamics and the Physiological Basis of Stay‐Green in Sorghum by Borrell, Andrew K., Hammer, Graeme L.

“…Sorghum [Sorghum bicolor (L.) Moench] hybrids containing the stay‐green trait retain more photosynthetically active leaves under drought than do hybrids that…”
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Does Maintaining Green Leaf Area in Sorghum Improve Yield under Drought? II. Dry Matter Production and Yield by Borrell, Andrew K., Hammer, Graeme L., Henzell, Robert G.

“…Retention of green leaf area at maturity (GLAM), known as stay‐green, is used as an indicator of postanthesis drought resistance in sorghum [Sorghum bicolor…”
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