. 2019 Nov 29;10:2746. doi: 10.3389/fmicb.2019.02746

TABLE 2.

Symbiotic performance of 12 N₂O reducing Bradyrhizobium strains inoculated with cowpea was determined based on nodule number (NN), nodule dry weight (NDW), shoot dry weight (SDW), symbiotic effectiveness (SE, calculated as % relative to SDW of +N controls), shoot nitrogen content (SN, given as % of SDW), and shoot nitrogen derived from the atmosphere (Ndfa, calculated as % SN relative to −N controls).

Treatment	NN	NDW (mg plant^–1)	SDW (mg plant^–1)	SE (%)	SN (%)	Ndfa (%)
AC70c	44 ± 11^a	93 ± 12^a	570 ± 44^ab	91	4.07 ± 0.37^abc	76
AC101b	59 ± 20^a	90 ± 26^a	557 ± 116^ab	89	4.24 ± 0.15^ab	77
AC92d	31 ± 12^a	107 ± 55^a	500 ± 144^abc	80	3.34 ± 0.68^abcd	70
AC79c2	45 ± 13^a	100 ± 00^a	443 ± 29^abc	71	2.99 ± 0.81^bcd	66
AC101c	57 ± 37^a	103 ± 12^a	430 ± 56^abc	67	2.62 ± 0.82^cd	60
AC101e	29 ± 15^a	70 ± 10^a	393 ± 59^abcd	63	3.81 ± 0.07^abc	75
AC86d2	37 ± 4^a	83 ± 21^a	367 ± 32^bcd	59	3.08 ± 0.21^abcd	69
AC87H	40 ± 9^a	83 ± 51^a	363 ± 115^bcd	58	2.23 ± 0.81^de	52
AC79b3	46 ± 19^a	60 ± 36^a	323 ± 183^bcd	52	3.45 ± 0.54^abcd	72
AC86b2	27 ± 7^a	70 ± 30^a	297 ± 40^cd	47	2.91 ± 0.10^bcd	67
AC87j2	40 ± 17^a	63 ± 15^a	290 ± 69^cd	46	2.54 ± 0.54^cd	61
AC87j1	30 ± 13^a	50 ± 17^a	280 ± 35^cd	45	2.10 ± 0.67^de	50
+N control	na	na	627 ± 25^a	na	4.57 ± 0.00^a	na
−N control	na	na	147 ± 31^d	na	0.97 ± 0.02^e	na
Average	40 ± 17	81 ± 30	399 ± 147	64 ± 20	3.07 ± 1.03	66 ± 12
F statistics	1.16^ns	1.23^ns	7.3^∗∗∗	3.69^∗∗	10.45^∗∗∗	2.55^∗

Average values are given (n = 3) ± standard deviation. +N control: fertilized uninoculated; −N: non-fertilized uninoculated. Average values in the same column, followed by the same letter, are not significantly different at the 5% probability level by Tukey’s test. na, not applicable; ns, non-significant; ^∗significant at 0.05; ^∗∗significant at 0.01; ^∗∗∗significant at 0.001.