Table 5.

Effects of unilateral application of isoflavones on nitrogenase activity.

Treatments	SNA(C2H4 μmol g−1 nodule dry mass h−1)		ARA(C2H4 μmol h−1 plant−1)
	T+	T−	T+	T−
I0	24.5 ± 2.91a	24.5 ± 2.91a	4.4 ± 0.07b	4.4 ± 0.07a
I3.75	23.3 ± 2.68a	21.5 ± 0.80a	5.3 ± 0.11a	2.5 ± 0.02b

I₀ is the nutrient solution without isoflavones supplied on both sides, and I_3.75 is the nutrient solution with daidzein and genistein applied unilateral side. Treated side denoted as T+, untreated side denoted as T−, the values in the table represent the mean ± standard error (n = 4), different lowercase letters indicate significant difference (p < 0.05) by Duncan’s multiple range test and longitudinal comparison.