TABLE 4.

Growth-promoting effect of Rahnella victoriana JZ-GX1 on different plants.

		Plant height (m)	Ground diameter (mm)
P. euramericana (Dode) Guinier cv. “san Martino” (I-72 poplar)	CK	4.55 ± 0.28a	39.90 ± 4.69a
	JZ-GX1	4.99 ± 0.20b	46.32 ± 3.54b
P. elliottii	CK	49.98 ± 13.49a	13.52 ± 3.79a
	JZ-GX1	61.79 ± 13.42b	15.49 ± 3.12b
P. serotina	CK	147.85 ± 12.99a	17.82 ± 1.70a
	JZ-GX1	168.53 ± 11.05b	17.81 ± 2.98a
M. spectabilis	CK	212.36 ± 7.86a	25.55 ± 3.07a
	JZ-GX1	215.20 ± 10.92a	26.10 ± 3.39a

Means ± standard deviations (n = 90). Different letters indicated a significant difference between control and inoculation treatment based on student’s t-test (p < 0.05).