Correlation and co-localization of QTLs for stomatal density, canopy temperature, and productivity with and without drought stress in Setaria

Parthiban Thathapalli Prakash, Darshi Banan, Rachel Paul, Maximilian Feldman, Dan Xie, Luke Freyfogle, Ivan Baxter & Andrew Leakey
Mechanistic modeling indicates that stomatal conductance could be reduced to improve water use efficiency (WUE) in C4 crops. Genetic variation in stomatal density and canopy temperature was evaluated in the model C4 genus, Setaria. Recombinant inbred lines (RILs) derived from a Setaria italica × Setaria viridis cross were grown with ample or limiting water supply under field conditions in Illinois. An optical profilometer was used to rapidly assess stomatal patterning, and canopy temperature was measured...
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