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1,340 datasets found

  • Genomic-enabled prediction of ordinal data with bayesian logistic ordinal reg... N3 | TTL | RDF/XML | JSON-LD

    CIMMYT Ethiopia
    Most genomic-enabled prediction models developed so far assume that the response variable is continuous and normally distributed. The exception is the probit model developed for ordered categorical phenotypes. In statistical applications, due to the easy implementation of the Bayesian probit ordinal regression (BPOR) model, Bayesian logistic ordinal...
    Created January 20, 2025 • Updated January 20, 2025

  • CIMMYT Maize Lines (CMLs) - Pedigree and characterization data N3 | TTL | RDF/XML | JSON-LD

    CIMMYT Ethiopia
    CIMMYT has periodically announced CIMMYT Maize Lines (CMLs). CMLs are carefully selected inbred lines with good general combining ability and a significant number of value-adding traits such as drought tolerance, N use efficiency, acid soil tolerance, resistance to diseases, insects and parasitic weeds. In many instances, they are parental lines of...
    Created January 20, 2025 • Updated January 20, 2025

  • SI-SAS. A SAS Code to Calculate Several Selection Indexes N3 | TTL | RDF/XML | JSON-LD

    CIMMYT Ethiopia
    SI-SAS is a code written in SAS to produce several selection indexes. To run the code you have to have SAS 9.2 or higher installed in your computer. The first task is to change the folder where the data file to analyze is located and the name of the file. The data file must be in csv format with columns for variables and rows for observations. Two...
    Created January 20, 2025 • Updated January 20, 2025

  • International Late Yellow Hybrid trial - ILYH1431 N3 | TTL | RDF/XML | JSON-LD

    CIMMYT Ethiopia
    Summary results and individual trial results from the International Late Yellow Hybrid - ILYH, (Mid-altitude/Subtropical Three Way Crosses Yellow Hybrids, With High Concentrations of Provitamin A (especially beta-carotene) - CHTPROA) conducted in 2014.
    Created January 20, 2025 • Updated January 20, 2025

  • International Late White Hybrid trial - ILWH1401 N3 | TTL | RDF/XML | JSON-LD

    CIMMYT Ethiopia
    Summary results and individual trial results from the International Late White Hybrid - ILWH, (Tropical Three Way Crosses White Late Normal Hybrid - TTWCWL) conducted in 2014.
    Created January 20, 2025 • Updated January 20, 2025

  • Selection of the bandwidth parameter in a bayesian kernel regression model fo... N3 | TTL | RDF/XML | JSON-LD

    CIMMYT Ethiopia
    One of the most widely used kernel functions in genomic-enabled prediction is the Gaussian kernel. Usually selection of the bandwidth parameter for kernel regression is based on cross-validation. In this study, we propose a Bayesian method for selecting the bandwidth parameter h of a Gaussian kernel as the mode of its posterior distribution. We present a...
    Created January 20, 2025 • Updated January 20, 2025

  • Extending the marker × environment interaction model for genomic-enabled pred... N3 | TTL | RDF/XML | JSON-LD

    CIMMYT Ethiopia
    The marker × environment interaction (M×E) genomic model can be used to generate predictions for untested individuals and identify genomic regions whose effects are stable across environments and others that show environmental specificity. The objectives of this study were: (1) to extend the M×E interaction model using priors that produce shrinkage and...
    Created January 20, 2025 • Updated January 20, 2025

  • META-SAS: A Suite of SAS Programs to Analyze Multienvironment N3 | TTL | RDF/XML | JSON-LD

    CIMMYT Ethiopia
    Multienvironment trials (METs) enable the evaluation of the same genotypes under a v ariety of environments and management conditions. We present META (Multi Environment Trial Analysis), a suite of 31 SAS programs that analyze METs with complete or incomplete block designs, with or without adjustment by a covariate. The entire program is run through a...
    Created January 20, 2025 • Updated January 20, 2025

  • GEA-R (Genotype x Environment Analysis with R for Windows) Version 4.1 N3 | TTL | RDF/XML | JSON-LD

    CIMMYT Ethiopia
    In agricultural experimentation, a large number of genotypes are normally tested over a wide range of environments. The occurrence of the genotype (G) X environment (E) interaction (GEI) effect further complicates the selection of superior genoty pes for a target population of environments. In the absence of GEI, the superior genotype in one environment...
    Created January 20, 2025 • Updated January 20, 2025

  • AGD-R (Analysis of Genetic Designs with R for Windows) Version 5.0 N3 | TTL | RDF/XML | JSON-LD

    CIMMYT Ethiopia
    A major objective of biometrical genetics is to explore the nature of gene action in determining quantitative traits. This also includes determination of the number of major genetic factors or genes responsible for the traits. Diallel Mating Designs have been designed to deal with the type of genetic experiments that help assess variability in observed...
    Created January 20, 2025 • Updated January 20, 2025

  • Application of a genomics selection index to real and simulated data N3 | TTL | RDF/XML | JSON-LD

    CIMMYT Ethiopia
    We apply a Genomic Selection Index (GSI) to simulated and real data sets with four traits and numerically we compared its efficiency with that of the phenotypic selection index (PSI) using the ratio of the GSI response over the PSI response. In addition, we used two additional criteria to compare the GSI vs PSI efficiency: the ratio of the average of the...
    Created January 20, 2025 • Updated January 20, 2025

  • International Late Yellow Hybrid trial - ILYH1402 N3 | TTL | RDF/XML | JSON-LD

    CIMMYT Ethiopia
    Summary results and individual trial results from the International Late Yellow Hybrid - ILYH, (Tropical Three Way Crosses Yellow Late Normal Hybrid - TTWCYL) conducted in 2014.
    Created January 20, 2025 • Updated January 20, 2025

  • 18th Semi-Arid wheat yield trial genotyping-by-sequencing data N3 | TTL | RDF/XML | JSON-LD

    CIMMYT Ethiopia
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    Created January 20, 2025 • Updated January 20, 2025

  • 18th Semi-Arid Wheat Yield Trial N3 | TTL | RDF/XML | JSON-LD

    CIMMYT Ethiopia
    The Semi-Arid Wheat Yield Trial (SAWYT) is a replicated yield trial that contains spring bread wheat (Triticum aestivum) germplasm adapted to low rainfall, drought prone environments typically receiving less than 500 mm of water available during the cropping cycle. The combination of water-use efficiency and water responsive broad adaptation plus yield...
    Created January 20, 2025 • Updated January 20, 2025

  • Characterization of maize production in southern africa: synthesis of CIMMYT/... N3 | TTL | RDF/XML | JSON-LD

    CIMMYT Ethiopia
    This report presents the synthesis of household level surveys in five intervention countries (Angola, Malawi, Mozambique, Zambia, and Zimbabwe) of the Drought Tolerant Maize for Africa (DTMA) project designed and implemented by the International Maize and Wheat Improvement Center (CIMMYT), International Institute for Tropical Agriculture (IITA) and...
    Created January 20, 2025 • Updated January 20, 2025

  • Characterization of maize producing households in drought prone regions of Ea... N3 | TTL | RDF/XML | JSON-LD

    CIMMYT Ethiopia
    Agriculture in eastern Africa is predominantly rainfed and maize is a major food crop, primarily produced for home consumption and the market by small-scale family farms. The study characterized farm households in the drought prone maize growing areas of eastern Africa synthesizing data from parallel household surveys in Ethiopia, Kenya, Uganda and...
    Created January 20, 2025 • Updated January 20, 2025

  • Integrating Crop and Livestock Production for Improved Food Security and Live... N3 | TTL | RDF/XML | JSON-LD

    CIMMYT Ethiopia
    Integrated crop livestock production systems are among the principal modes of livelihood in rural Zimbabwe. Nonetheless, the dynamics in each of the different components in such systems and the potential impact of technologies that enhance integration of these components at household level is hardly known. Concomitantly, CIMMYT, ICRISAT, ILRI and the...
    Created January 20, 2025 • Updated January 20, 2025

  • The Role of Crop Residue Management in Increasing the Resilience of Mixed Far... N3 | TTL | RDF/XML | JSON-LD

    CIMMYT Ethiopia
    N/A
    Created January 20, 2025 • Updated January 20, 2025

  • Ideas for modernizing maize and bean value chains in Kenya and Ethiopia: res... N3 | TTL | RDF/XML | JSON-LD

    CIMMYT Ethiopia
    The development of relatively sophisticated actors along the agricultural value chains is an important precursor for agricultural development. In staple crop value chains for example, innovations around warehouse receipting and collateralization can enable farmers to successfully engage in temporal and spatial arbitrage, thereby opening opportunities to...
    Created January 20, 2025 • Updated January 20, 2025

  • Performance Evaluation of Engine Operated Potato Grader N3 | TTL | RDF/XML | JSON-LD

    Ethiopian Institute of Agricultural Research (EIAR)
    Traditional methods of grading potato tubers require high labor-hour, cause fatigue to workers and has low output. Hence, engine driven machine capable of grading potato tubers into different size classes was evaluated. The grader prototype consisted of feeding table, grading cylinder and catchment tray. Grading capacity, grading system efficiency,...
    Created March 18, 2023 • Updated June 19, 2024
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