Reference:
Messmer R, Fracheboud Y, Bänziger M, Vargas M, Stamp P, Ribaut J-M. Drought stress and tropical maize: QTL-by-environment interactions and stability of QTLs across environments for yield components and secondary traits. Theoretical and Applied Genetics (2009) DOI 10.1007/s00122-009-1099-x.

Linkage map: 160 markers (79 RFLPs and 81 SSRs) analyzed in 236 recombinant inbred lines (RILs)

Phenotypic data: 6 traits evaluated in 7 field experiments conducted under water stress (WS) or well-watered conditions (WW) in Mexico (M) or Zimbabwe (Z)

MFLW: Time from sowing to male flowering (d)
ASI: Anthesis-to-silking interval (d)
GY: Grain yield (g m-2)
KNO: Number of kernels (m-2)
HKFW: Fresh weight of 100 kernels (g)
PHT: Plant height (cm)

Messmer1map.inp as an Rmap input file. Run Rmap to create a QTL Cartographer map file. See section 6.1.2 in the QTL Cartographer manual (v1.16).
Messmer1cross.inp is an Rcross input file, which contains the marker scores and the phenotypic data. Run Rcross to create a QTL Cartographer cross file. See section 6.3.2 in the QTL Cartographer manual (v1.16).