This dataset comes from the European Union project DROPS (DROught-tolerant
yielding PlantS). A panel of 256 maize hybrids was grown with two water
regimes (irrigated or rainfed), in seven fields in 2012 and 2013,
respectively, spread along a climatic transect from western to eastern
Europe, plus one site in Chile in 2013. This resulted in 28 experiments
defined as the combination of one year, one site and one water regime, with
two and three repetitions for rainfed and irrigated treatments, respectively.
A detailed environmental characterisation was carried out, with hourly
records of micrometeorological data and soil water status, and associated
with precise measurement of phenology. Grain yield and its components were
measured at the end of the experiment.
10 experiments have been selected from the full data set, two for each of
the five main environmental scenarios that were identified in the data. The
scenarios have been added to the data as well as a classification of the
genotypes in four genetic groups.
The data.frame contains the raw phenotypic data per experiment
(Location × year × water regime), one value per individual plot and
outliers have been removed.
A data.frame with 6499 rows and 25 columns.
- Experiment
experiments ID described by the three first letters of the city’s name followed by the year of experiment and the water regime with W for watered and R for rain-fed.
- Site
location where the experiment was performed
- year
year in which the experiment was performed
- plotId
plot identifier (when available)
- treatment
targeted water regime
- Code_ID, Variety_ID, Accession_ID
identifier of the genotype
- Replicate, block
experimental design factors
- Row, Column
2D coordinates of each plot
- grain.yield
genotypic mean for yield adjusted at 15\ in ton per hectare (t ha^-1)
- grain.number
genotypic mean for number of grain per square meter
- grain.weight
genotypic mean for individual grain weight in milligram (mg)
- anthesis
genotypic mean for male flowering (pollen shed), in thermal time cumulated since emergence (d_20°C)
- silking
genotypic mean for female flowering (silking emergence), in thermal time cumulated since emergence (d_20°C)
#'
- plant.height
genotypic mean for plant height, from ground level to the base of the flag leaf (highest) leaf in centimeter (cm)
- tassel.height
genotypic mean for plant height including tassel, from ground level to the highest point of the tassel in centimeter (cm)
- ear.height
genotypic mean for ear insertion height, from ground level to ligule of the highest ear leaf in centimeter (cm)
- Lat
The latitude of the location where the experiment was performed
- Long
The longitude of the location where the experiment was performed
- scenarioWater
water scenario for the experiment, well watered (WW) or water deficit (WD)
- scenarioTemp
temperature scenario for the experiment, Cool, Hot or Hot(Day)
- scenarioFull
the full scenario for the experiment, a combination of scenarioWater and scenarioTemp
- geneticGroup
the genetic group to which the genotype belongs
References
Millet, E. J., Pommier, C., et al. (2019). A multi-site experiment in a network of European fields for assessing the maize yield response to environmental scenarios (Data set). doi:10.15454/IASSTN