Figure 1
From: Improvement in nitrogen fixation capacity could be part of the domestication process in soybean
Overall symbiotic performance of cultivated and wild soybeans. Thirty-one cultivated and seventeen wild soybean accessions were inoculated with either B. diazoefficiens sp. nov. USDA110 or S. (E.) fredii CCBAU45436. Average data per plant for cultivated and wild soybean populations were compared: (a) total fresh weight, (b) total root fresh weight, (c) total dry weight, (d) total nodule fresh weight, (e) nodule number per plant, (f) total nitrogen and (g) total ureides. Solid bars: cultivated soybean; open bars: wild soybean; green bars: plants inoculated with USDA110; blue bars: plants inoculated with CCBAU45436. For total fresh weight, total root fresh weight, total dry weight, total nodule fresh weight, nodule number and total nitrogen per plant, different letters indicate a significant difference between groups by one-way ANOVA followed by post hoc Tukey test (P<0.05). For total ureides, different letters indicate a significant difference between groups using Mann–Whitney non-parametric test between pairs of independent samples (P<0.05 with Bonferroni correction). Each bar represents the average value of 31 cultivated soybean or 17 wild soybean accessions. Error bar: ±s.e.m.
