Fig. 6 Representative histogram of fiber lengths L(w) from bolls at the first position from Node 11 for plants grown in ambient atmospheric [CO₂]. Histograms of fiber lengths from bolls grown in 1995 ambient minus 2°C (seasonal average, 20°C) and in 1995 ambient temperatures plus 2°C (seasonal average, 26°C) were based on 10000 and 6343 fibers, respectively. The temperatures were averages from flowering to open bolls