Kenneth J Boote results 26
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Identification of Genetic Variation Associated With Heat Tolerance in Cowpea ( Vigna unguiculata L. Walp.)NARA Subscribed
Heat tolerance is an important trait in cowpea, a crop that is the primary protein source for a large portion of the human population in sub‐Saharan Africa. Cultivated, landrace, semi‐wild, and wild cowpea grow across the region in diverse climatic conditions. This study used environmental association (envGWAS) and allele‐frequency outlier approaches across a panel of 580 gene bank accessions to identify genomic regions associ...
Crop models are powerful tools to support breeding because of their capability to explore genotype × environment×management interactions that can help design promising plant types under climate change. However, relationships between plant traits and model parameters are often model specific and not necessarily direct, depending on how models formulate plant morphological and physiological features. This hinders model applicati...
Modelling climate change impacts on maize yields under low nitrogen input conditions in sub‐Saharan AfricaNARA Subscribed
Smallholder farmers in sub‐Saharan Africa (SSA) currently grow rainfed maize with limited inputs including fertilizer. Climate change may exacerbate current production constraints. Crop models can help quantify the potential impact of climate change on maize yields, but a comprehensive multimodel assessment of simulation accuracy and uncertainty in these low‐input systems is currently lacking. We evaluated the impact of varyin...
A potato crop multimodel assessment was conducted to quantify variation among models and evaluate responses to climate change. Nine modeling groups simulated agronomic and climatic responses at low‐input (Chinoli, Bolivia and Gisozi, Burundi)‐ and high‐input (Jyndevad, Denmark and Washington, United States) management sites. Two calibration stages were explored, partial (P1), where experimental dry matter data were not provide...
Crop models of crop growth are increasingly used to quantify the impact of global changes due to climate or crop management. Therefore, accuracy of simulation results is a major concern. Studies with ensembles of crop models can give valuable information about model accuracy and uncertainty, but such studies are difficult to organize and have only recently begun. We report on the largest ensemble study to date, of 27 wheat mod...
Continuing increases in atmospheric carbon dioxide concentration (CO 2 ) will likely be accompanied by global warming. Our research objectives were (a) to determine the effects of season‐long exposure to daytime maximum/nighttime minimum temperatures of 32/22, 36/26, 40/30 and 44/34°C at ambient (350 μmol mol −1 ) and elevated (700 μmol mol −1 ) CO 2 on reproductive processes and yield of peanut, and (b) to evaluate whether th...
Effects of elevated temperature and carbon dioxide on seed‐set and yield of kidney bean ( Phaseolus vulgaris L.)NARA Subscribed
It is important to quantify and understand the consequences of elevated temperature and carbon dioxide (CO 2 ) on reproductive processes and yield to develop suitable agronomic or genetic management for future climates. The objectives of this research work were (a) to quantify the effects of elevated temperature and CO 2 on photosynthesis, pollen production, pollen viability, seed‐set, seed number, seeds per pod, seed size, se...
Carbon dioxide and temperature effects on forage establishment: tissue composition and nutritive valueNARA Subscribed
Summary Atmospheric CO 2 concentration ([CO 2 ]) and temperature are likely to increase in the future and may change plant growth and composition characteristics. Rhizoma peanut ( Arachis glabrata Benth.) and bahiagrass ( Paspalum notatum Flügge) were grown on a natural field soil in temperature‐gradient greenhouses to evaluate the effects of elevated [CO 2 ] and temperature on tissue composition and digestibility during the e...