No Article Preliminary results indicated significant differences among genotypes for final mapping, yield, and fiber characteristics. Differences due to row spacing were observed for lint yield. Significant genotype x spacing interactions were observed for yield, average number of vegetative branches, nodes to first sympodial branch, and boll position in the final mapping. Analysis of the data indicated that: (1) response to selection for adaptation to narrow rows was observed, (2) further selection under a narrow row environment should continue.