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https://www.readbyqxmd.com/read/28738529/nitrogen-functionalization-biochars-derived-from-wheat-straws-via-molten-salt-synthesis-an-efficient-adsorbent-for-atrazine-removal
#1
Fan Yang, Lili Sun, Weiling Xie, Qun Jiang, Yan Gao, Wei Zhang, Ying Zhang
N-doped porous carbon sheets (NPCS) resulted from wheat straws are fabricated through using molten salts via the carbonization-functionalization progress, which show unique hierarchical structure, large pore volume and high surface area with affluent micropores. Results indicate that there exist many hierarchical pores consisting of the single carbon sheet with ultrathin nature, owing to the template role of molten salt mixtures at high temperature. Such superior structure can bring about desired performance of adsorption capacity of 82...
July 19, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28736576/the-impact-of-considering-land-intensification-and-updated-data-on-biofuels-land-use-change-and-emissions-estimates
#2
Farzad Taheripour, Xin Zhao, Wallace E Tyner
BACKGROUND: The GTAP model has been used to estimate biofuel policy induced land use changes and consequent GHG emissions for more than a decade. This paper reviews the history of the model and database modifications and improvements that have occurred over that period. In particular, the paper covers in greater detail the move from the 2004 to the 2011 database, and the inclusion of cropland intensification in the modeling structure. RESULTS: The results show that all the changes in the global economy and agricultural sectors cause biofuels induced land use changes and associated emissions can be quite different using the 2011 database versus 2004...
2017: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/28734070/genome-scans-on-experimentally-evolved-populations-reveal-candidate-regions-for-adaptation-to-plant-resistance-in-the-potato-cyst-nematode-globodera-pallida
#3
D Eoche-Bosy, M Gautier, M Esquibet, F Legeai, A Bretaudeau, O Bouchez, S Fournet, E Grenier, J Montarry
Improving resistance durability involves to be able to predict the adaptation speed of pathogen populations. Identifying the genetic bases of pathogen adaptation to plant resistances is a useful step to better understand and anticipate this phenomenon. Globodera pallida is a major pest of potato crop for which a resistance QTL, GpaVvrn , has been identified in Solanum vernei. However, its durability is threatened as G. pallida populations are able to adapt to the resistance in few generations. The aim of the present study was to investigate the genomic regions involved in the resistance breakdown by coupling experimental evolution and high-density genome scan...
July 22, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28733785/fertiliser-management-effects-on-dissolved-inorganic-nitrogen-in-runoff-from-australian-sugarcane-farms
#4
Grant Fraser, Ken Rohde, Mark Silburn
Dissolved inorganic nitrogen (DIN) movement from Australian sugarcane farms is believed to be a major cause of crown-of-thorns starfish outbreaks which have reduced the Great Barrier Reef coral cover by ~21% (1985-2012). We develop a daily model of DIN concentration in runoff based on >200 field monitored runoff events. Runoff DIN concentrations were related to nitrogen fertiliser application rates and decreased after application with time and cumulative rainfall. Runoff after liquid fertiliser applications had higher initial DIN concentrations, though these concentrations diminished more rapidly in comparison to granular fertiliser applications...
August 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28732398/simulation-of-targeted-pollutant-mitigation-strategies-to-reduce-nitrate-and-sediment-hotspots-in-agricultural-watershed
#5
Awoke Dagnew Teshager, Philip W Gassman, Silvia Secchi, Justin T Schoof
About 50% of U.S. water pollution problems are caused by non-point source (NPS) pollution, primarily sediment and nutrients from agricultural areas, despite the widespread implementation of agricultural Best Management Practices (BMPs). However, the effectiveness of implementation strategies and type of BMPs at watershed scale are still not well understood. In this study, the Soil and Water Assessment Tool (SWAT) ecohydrological model was used to assess the effectiveness of pollutant mitigation strategies in the Raccoon River watershed (RRW) in west-central Iowa, USA...
July 17, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28730873/physiological-traits-determining-yield-tolerance-of-wheat-to-foliar-diseases
#6
Femke van den Berg, Neil Paveley, I J Bingham, Frank van den Bosch
Tolerance is defined as the ability of one cultivar to yield more than another cultivar, under similar disease severity. If both cultivars suffer an equal loss in healthy (green) leaf area duration (HAD) over the grain filling period due to disease presence, then the yield loss per unit HAD loss is smaller for a more tolerant cultivar. Little is understood of what physiological and developmental traits of cultivars determine disease tolerance. In this study we use a mathematical model of wheat to investigate the effect of a wide range of wheat phenotypes on tolerance...
July 21, 2017: Phytopathology
https://www.readbyqxmd.com/read/28730464/genome-wide-association-mapping-of-canopy-wilting-in-diverse-soybean-genotypes
#7
Avjinder S Kaler, Jeffery D Ray, William T Schapaugh, C Andy King, Larry C Purcell
Genome-wide association analysis identified 61 SNP markers for canopy wilting, which likely tagged 51 different loci. Based on the allelic effects of the significant SNPs, the slowest and fastest wilting genotypes were identified. Drought stress is a major global constraint for crop production, and slow canopy wilting is a promising trait for improving drought tolerance. The objective of this study was to identify genetic loci associated with canopy wilting and to confirm those loci with previously reported canopy wilting QTLs...
July 20, 2017: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/28730463/exploring-new-alleles-for-frost-tolerance-in-winter-rye
#8
Wiltrud Erath, Eva Bauer, D Brian Fowler, Andres Gordillo, Viktor Korzun, Mira Ponomareva, Malthe Schmidt, Brigitta Schmiedchen, Peer Wilde, Chris-Carolin Schön
Rye genetic resources provide a valuable source of new alleles for the improvement of frost tolerance in rye breeding programs. Frost tolerance is a must-have trait for winter cereal production in northern and continental cropping areas. Genetic resources should harbor promising alleles for the improvement of frost tolerance of winter rye elite lines. For frost tolerance breeding, the identification of quantitative trait loci (QTL) and the choice of optimum genome-based selection methods are essential. We identified genomic regions involved in frost tolerance of winter rye by QTL mapping in a biparental population derived from a highly frost tolerant selection from the Canadian cultivar Puma and the European elite line Lo157...
July 20, 2017: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/28729549/des-tomato-a-knowledge-exploration-system-focused-on-tomato-species
#9
Adil Salhi, Sónia Negrão, Magbubah Essack, Mitchell J L Morton, Salim Bougouffa, Rozaimi Razali, Aleksandar Radovanovic, Benoit Marchand, Maxat Kulmanov, Robert Hoehndorf, Mark Tester, Vladimir B Bajic
Tomato is the most economically important horticultural crop used as a model to study plant biology and particularly fruit development. Knowledge obtained from tomato research initiated improvements in tomato and, being transferrable to other such economically important crops, has led to a surge of tomato-related research and published literature. We developed DES-TOMATO knowledgebase (KB) for exploration of information related to tomato. Information exploration is enabled through terms from 26 dictionaries and combination of these terms...
July 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28727805/turgor-responsive-starch-phosphorylation-in-oryza-sativa-stems-a-primary-event-of-starch-degradation-associated-with-grain-filling-ability
#10
Hiroshi Wada, Chisato Masumoto-Kubo, Koichi Tsutsumi, Hiroshi Nonami, Fukuyo Tanaka, Haruka Okada, Rosa Erra-Balsells, Kenzo Hiraoka, Taiken Nakashima, Makoto Hakata, Satoshi Morita
Grain filling ability is mainly affected by the translocation of carbohydrates generated from temporarily stored stem starch in most field crops including rice (Oryza sativa L.). The partitioning of non-structural stem carbohydrates has been recognized as an important trait for raising the yield ceiling, yet we still do not fully understand how carbohydrate partitioning occurs in the stems. In this study, two rice subspecies that exhibit different patterns of non-structural stem carbohydrates partitioning, a japonica-dominant cultivar, Momiroman, and an indica-dominant cultivar, Hokuriku 193, were used as the model system to study the relationship between turgor pressure and metabolic regulation of non-structural stem carbohydrates, by combining the water status measurement with gene expression analysis and a dynamic prefixed 13C tracer analysis using a mass spectrometer...
2017: PloS One
https://www.readbyqxmd.com/read/28727120/economic-selection-indexes-for-hereford-and-braford-cattle-raised-in-southern-brazil
#11
R F Costa, B B M Teixeira, M J Yokoo, F F Cardoso
Economic selection indexes (EI) are considered the best way to select the most profitable animals for specific production systems. Nevertheless, in Brazil, few genetic evaluation programs deliver such indexes to their breeders. The aims of this study were to determine the breeding goals (BG) and economic values (EV, in US$) for typical beef cattle production systems in southern Brazil, to propose EI aimed to maximize profitability, and to compare the proposed EI with the currently used empirical index. Bioeconomic models were developed to characterize 3 typical production systems, identifying traits of economic impact and their respective EV...
July 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28726222/loss-of-crop-yields-in-india-due-to-surface-ozone-an-estimation-based-on-a-network-of-observations
#12
Shyam Lal, Sethuraman Venkataramani, Manish Naja, Jagdish Chandra Kuniyal, Tuhin Kumar Mandal, Pradip Kumar Bhuyan, Kandikonda Maharaj Kumari, Sachchida Nand Tripathi, Ujjaini Sarkar, Trupti Das, Yerramsetti Venkata Swamy, Kotalo Rama Gopal, Harish Gadhavi, Modathi Kottungal Satheesh Kumar
Surface ozone is mainly produced by photochemical reactions involving various anthropogenic pollutants, whose emissions are increasing rapidly in India due to fast-growing anthropogenic activities. This study estimates the losses of wheat and rice crop yields using surface ozone observations from a group of 17 sites, for the first time, covering different parts of India. We used the mean ozone for 7 h during the day (M7) and accumulated ozone over a threshold of 40 ppbv (AOT40) metrics for the calculation of crop losses for the northern, eastern, western and southern regions of India...
July 19, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28725928/structural-modification-of-cuminaldehyde-thiosemicarbazone-increases-inhibition-specificity-toward-aflatoxin-biosynthesis-and-sclerotia-development-in-aspergillus-flavus
#13
Francesca Degola, Franco Bisceglie, Marianna Pioli, Sabrina Palmano, Lisa Elviri, Giorgio Pelosi, Tiziana Lodi, Francesco Maria Restivo
Aspergillus flavus is an opportunistic mold that represents a serious threat for human and animal health due to its ability to synthesize and release, on food and feed commodities, different toxic secondary metabolites. Among them, aflatoxin B1 is one of the most dangerous since it is provided with a strong cancerogenic and mutagenic activity. Controlling fungal contamination on the different crops that may host A. flavus is considered a priority by sanitary authorities of an increasing number of countries due also to the fact that, owing to global temperature increase, the geographic areas that are expected to be prone to experience sudden A...
July 19, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28725409/development-of-methane-conversion-factor-models-for-zebu-beef-cattle-fed-low-quality-crop-residues-and-by-products-in-tropical-regions
#14
Chatchai Kaewpila, Kritapon Sommart
The enteric methane conversion factor (Ym) is an important country-specific value for the provision of precise enteric methane emissions inventory reports. The objectives of this meta-analysis were to develop and evaluate the empirical Ym models for the national level and the farm level for tropical developing countries according to the IPCC's categorization. We used datasets derived from 18 in vivo feeding experiments from 1999 to 2015 of Zebu beef cattle breeds fed low-quality crop residues and by-products...
October 2016: Ecology and Evolution
https://www.readbyqxmd.com/read/28725389/quality-versus-quantity-foraging-decisions-in-the-honeybee-apis-mellifera-scutellata-feeding-on-wildflower-nectar-and-fruit-juice
#15
Kyle Shackleton, Nicholas J Balfour, Hasan Al Toufailia, Roberto Gaioski, Marcela de Matos Barbosa, Carina A de S Silva, José M S Bento, Denise A Alves, Francis L W Ratnieks
Foraging animals must often decide among resources which vary in quality and quantity. Nectar is a resource that exists along a continuum of quality in terms of sugar concentration and is the primary energy source for bees. Alternative sugar sources exist, including fruit juice, which generally has lower energetic value than nectar. We observed many honeybees (Apis mellifera scutellata) foraging on juice from fallen guava (Psidium guajava) fruit near others foraging on nectar. To investigate whether fruit and nectar offered contrasting benefits of quality and quantity, we compared honeybee foraging performance on P...
October 2016: Ecology and Evolution
https://www.readbyqxmd.com/read/28724952/global-alterations-in-areas-of-suitability-for-maize-production-from-climate-change-and-using-a-mechanistic-species-distribution-model-climex
#16
Nadiezhda Y Z Ramirez-Cabral, Lalit Kumar, Farzin Shabani
At the global level, maize is the third most important crop on the basis of harvested area. Given its importance, an assessment of the variation in regional climatic suitability under climate change is critical. CliMond 10' data were used to model the potential current and future climate distribution of maize at the global level using the CLIMEX distribution model with climate data from two general circulation models, CSIRO-Mk3.0 and MIROC-H, assuming an A2 emissions scenario for 2050 and 2100. The change in area under future climate was analysed at continental level and for major maize-producing countries of the world...
July 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28724111/agricultural-conservation-planning-framework-3-land-use-and-field-boundary-database-development-and-structure
#17
Mark D Tomer, David E James, Claudette M J Sandoval-Green
Conservation planning information is important for identifying options for watershed water quality improvement and can be developed for use at field, farm, and watershed scales. Translation across scales is a key issue impeding progress at watershed scales because watershed improvement goals must be connected with implementation of farm- and field-level conservation practices to demonstrate success. This is particularly true when examining alternatives for "trap and treat" practices implemented at agricultural-field edges to control (or influence) water flows through fields, landscapes, and riparian corridors within agricultural watersheds...
May 2017: Journal of Environmental Quality
https://www.readbyqxmd.com/read/28724078/genome-wide-association-study-of-developing-leaves-heat-tolerance-during-vegetative-growth-stages-in-a-sorghum-association-panel
#18
Junping Chen, Ratan Chopra, Chad Hayes, Geoffrey Morris, Sandeep Marla, John Burke, Zhanguo Xin, Gloria Burow
Heat stress reduces grain yield and quality worldwide. Enhancing heat tolerance of crops at all developmental stages is one of the essential strategies required for sustaining agricultural production especially as frequency of temperature extremes escalates in response to climate change. Although heat tolerance mechanisms have been studied extensively in model plant species, little is known about the genetic control underlying heat stress responses of crop plants at the vegetative stage under field conditions...
July 2017: Plant Genome
https://www.readbyqxmd.com/read/28724061/multi-locus-mixed-model-analysis-of-stem-rust-resistance-in-winter-wheat
#19
Paul D Mihalyov, Virginia A Nichols, Peter Bulli, Matthew N Rouse, Michael O Pumphrey
Genome-wide association mapping is a powerful tool for dissecting the relationship between phenotypes and genetic variants in diverse populations. With the improved cost efficiency of high-throughput genotyping platforms, association mapping is a desirable method of mining populations for favorable alleles that hold value for crop improvement. Stem rust, caused by the fungus f. sp. is a devastating disease that threatens wheat ( L.) production worldwide. Here, we explored the genetic basis of stem rust resistance in a global collection of 1411 hexaploid winter wheat accessions genotyped with 5390 single nucleotide polymorphism markers...
July 2017: Plant Genome
https://www.readbyqxmd.com/read/28720730/drought-stress-results-in-a-compartment-specific-restructuring-of-the-rice-root-associated-microbiomes
#20
Christian Santos-Medellín, Joseph Edwards, Zachary Liechty, Bao Nguyen, Venkatesan Sundaresan
Plant roots support complex microbial communities that can influence plant growth, nutrition, and health. While extensive characterizations of the composition and spatial compartmentalization of these communities have been performed in different plant species, there is relatively little known about the impact of abiotic stresses on the root microbiota. Here, we have used rice as a model to explore the responses of root microbiomes to drought stress. Using four distinct genotypes, grown in soils from three different fields, we tracked the drought-induced changes in microbial composition in the rhizosphere (the soil immediately surrounding the root), the endosphere (the root interior), and unplanted soils...
July 18, 2017: MBio
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