Acknowledgments:
This work is supported by the National Science Foundation EF-1442597 to
KW, EF-1442486 to AE and Rice Rivers research scholarship to MM. We also
acknowledge NSF Grant No.1126840, which funded the Southwest
Experimental Garden Array used in this research. We thank the field crew
for help setting up the common gardens and specifically Dr. Ethan
Bucholz for his continued support and guidance through sampling design
and common garden establishment. We also thank the computational
resources available through the VCU HPC grid engine system.