Table 1.

Soybean Flower Count Per Plant at the Beginning of Reproduction^a

Treatment	Flower Count
Ctrl	2.5 ± 1.0
CB_Low	5.8 ± 0.5*
CB_Med	5.8 ± 0.7*
CB_High	5.0 ± 0.4b
MWCNT_Low	7.8 ± 1.8c
MWCNT_Med	8.2 ± 1.1*
MWCNT_High	8.2 ± 1.3*
GNP_Low	9.6 ± 1.2**
GNP_Med	11.8 ± 1.7***
GNP_High	10.4 ± 0.7**

^aMeasured at day 22 post-transplantation (Figure S3). Ctrl = control without nanomaterial amendment, CB = carbon black, MWCNT = multiwalled carbon nanotubes, and GNP = graphene nanoplatelets. Low, med (medium), and high concentrations correspond to 0.1, 100, and 1000 mg kg⁻¹ nanomaterial on a dry soil basis. All data are shown as mean ± SE (n = 5 plants, except n = 4 for the Ctrl, CB_High, and MWCNT_Low treatments).

^*P < 0.05,

^**P < 0.01,

^***P < 0.001, as compared to the control.

^bP = 0.1

^cP = 0.08, as compared to the control.