. 2015 Apr;26(1):41–51.

Table 2:

Nitrogenase activities of four endophytic bacterial isolates from sugarcane with varying concentrations of yeast extract in the media.

Isolates	Nitrogenase activity by ARA (nmol C₂H₄/mg protein/h)

	Yeast extract

	0%	0.005%	0.01%	0.05%
UT3R1	52.9^f	22.1^g	15.1^g	6.5^g
C2HL2	354.1^b	403.8^a	320.9^c	23.6^g
C7HL1	22.5^g	208.7^d	9.6^g	9.4^g
C34MR1	23.0^g	24.1^g	15.4^g	5.6^g

Note: Different letters indicate a significant difference at the 5% level (according to Duncan’s multiple range test) with five replicates.