MAIZE STALK LODGING QUANTIFYING Ag MEQ Laboratory COMPLEX
MAIZE STALK LODGING QUANTIFYING Ag. MEQ Laboratory COMPLEX MULTI-SCALE PHENOTYPES danieljr@uidaho. edu Daniel Robertson
CORN, WHEAT AND RICE ACCOUNT FOR TWO THIRDS OF HUMAN CALORIC INTAKE Ag. MEQ Laboratory danieljr@uidaho. edu
BREEDERS NEED RELIABLE / EFFICIENT MEASUREMENTS OF STALK STRENGTH Temperature / Humidity Sensor USB Data Export GPS Sensor Battery Pack Ag. MEQ Laboratory danieljr@uidaho. edu
WE CAN STATISTICALLY DISTINGUISH STRENGTH AMONG ELITE HYBRIDS 72 hybrids at 8 locations Categorical regression model: Stalk strength Location Hybrid 21 weakest 10 strongest Ag. MEQ Laboratory danieljr@uidaho. edu
HYBRIDS DEMONSTRATE LARGE AMOUNTS OF WITHIN PLOT VARIATION Ag. MEQ Laboratory danieljr@uidaho. edu
VARIATION WITHIN A SINGLE PLOT IS THE LARGEST SOURCE OF VARIATION Ag. MEQ Laboratory danieljr@uidaho. edu
DOES STALK STRENGTH PREDICT LODGING RESISTANCE? Historical Lodging Data Bending Strength Data ▪ 57 varieties ▪ 57 Varieties ▪ 4 years (2014 – 2017) ▪ 2 years (2017 – 2018) ▪ 107 fields total ▪ 3 fields total Random effect ▪ ~38 fields with 60 plants ▪ ~20 plants per field Imputed Strength Values Imputed strength vs lodging Repeated 100 times Ag. MEQ Laboratory danieljr@uidaho. edu
BENDING STRENGTH IS A STRONG PREDICTOR OF HISTORICAL LODGING RATES
Monsanto Company Clemson University • • • Stephen Kresovich Zach Brenton Rajandeep Sekhon Chris Mc. Mahan Chase Joyner • Brian Gardunia • Ty Barten Brigham Young University • Douglas Cook National Science Foundation • • NSF EPSCOR Track II - 1826715 CMMI-1400973 University of Kentucky • Seth Debolt US Department of Agriculture • NIFA-AFRI #100802 Ag. MEQ Laboratory danieljr@uidaho. edu
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