########################################################################################### # # Angela C Burnett Shawn P Serbin Kenneth J Davidson Kim S Ely Alistair Rogers. 2020. # Hyperspectral leaf reflectance, biochemistry, and physiology of droughted and watered # crops. # ########################################################################################### Data Descriptions: Uniquefield ---------------------------------------------------------------------------------------------- Uniquefield is used to merge datasets. For data collected in the glasshouse, uniquefield is composed of measurement date (YYYYMMDD) and plant number. For data collected in the field, uniquefield is composed of measurement date (YYYYMMDD), plot number, within-plot rep number, and 'leaf' or 'canopy'. 'Leaf' or 'canopy' denotes whether spectral data were collected at the leaf or the canopy scale; leaf-level trait data are obtained from samples harvested at the same time as either leaf or canopy spectral data were collected and may be paired with spectral data accordingly. USDA Species Codes Species Name ---------------------------------------------------------------------------------------------- CAAN4 Capsicum annuum CUPE Cucurbita pepo HEAN3 Helianthus annuus POCA19 Populus canadensis RASA2 Raphanus sativus SEIT Setaria italica SOBI2 Sorghum bicolor Leaf Trait Units ---------------------------------------------------------------------------------------------- Amino acids mmol per m2 leaf area Protein g per m2 leaf area Starch mmol glucose equivalents per m2 leaf area Glucose mmol glucose equivalents per m2 leaf area Fructose mmol glucose equivalents per m2 leaf area Sucrose mmol glucose equivalents per m2 leaf area LDP (short-chain) Fructan mmol glucose equivalents per m2 leaf area HDP (long-chain) Fructan mmol glucose equivalents per m2 leaf area Proline g per m2 leaf area ABA (abscisic acid) nmol per m2 leaf area LMA (leaf mass per unit area) grams per m2 RWC (relative water content) Percent Elemental C grams per m2 Elemental N grams per m2 GasExchange Units Definition ---------------------------------------------------------------------------------------------- Asat micromol CO2 per m2 leaf area per s Light saturated net CO2 assimilation rate at ambient CO2 concentration, per unit leaf area gs mol H2O per m2 leaf area per s Stomatal conductance to water vapor Ci micromol CO2 per mol air Intercellular CO2 concentration Tr mmol H2O per m2 leaf area per s Transpiration rate VPDleaf kPa Leaf to air vapor pressure deficit Tleaf degrees Celsius Leaf surface temperature CO2s micromol CO2 per mol air CO2 concentration in the leaf cuvette H2Os mmol H2O per mol air H2O concentration in the leaf cuvette RHs percent Relative humidity in the leaf cuvette flow micromol air per s Flow rate into leaf cuvette Qin micromol quanta per m2 per s Photosynthetic flux density (PPFD) incident on the leaf, inside the leaf cuvette