Figure 1.

Nitrogenase activity measured by the acetylene reduction assay (ARA) (a), turgor weight (TW) to dry weight (DW) ratio (b) and osmotic potential (c) from inoculated or fertilized BAT 93 (BT, blue) and (low phytic acid) lpa1 (LP, green) plants. Dashed and solid bars correspond to Rhizobium etli inoculated (R) and to fertilized (F) plants, respectively. Plants from the control treatment (ct, dark color) and from the water stress treatment (ws, light color) at 14% soil moisture were analyzed. Equal lowercase letters correspond to equal mean for analysis of variance (ANOVA) with Tukey honest significant difference (HSD) (a, c) or Tamhane T2 post hoc test (b). Bars represent ± Standard Deviation (SD). Nodule dry weight: gNDW.