FIG 7.

Effect of inoculation of wheat HD 2967 with the engineered mutant, A. chroococcum HKD15, on yield of wheat grains in the field. The amounts of urea mentioned are in kilograms of N per hectare. Crop neither fertilized with urea nor inoculated with any bacteria was considered control (100%). *, the actual wheat crop yield (average of three plots) for this treatment was 291.0 g per m². The critical difference (equivalent to least significant difference) at 5% was 69.2, the standard error of the mean was 23.1, and the coefficient of variance was 8.4.