Data collected at the end of the experiment showed that in all three treatments (CF, NF, and AA, respectively) ‘S156’ had significantly more leaves than ‘R123’. A similar observation was made for the number of injured leaves. There were no statistically significant differences in total leaf areas (TLA/cm2) between the two lines grown in CF and NF. However, when grown in AA, TLA for ‘S156’ was lower than for ‘R123’. Both lines from AA had lower shoot dry weights than their
counterparts in both CF and NF. These are the results of ‘chamber effects’ on plant growth and development. The evaluations showed that the differences in shoot dry weights were due to the differences in leaf dry weights. All treatments had a significant effect on root: shoot ratios for both ‘S156’ and ‘R123’ plants. The lowest root: shoot ratio for both lines were obtained from
plants in CF and the highest from plants in AA (Fig. 1).