. 2022 Jun 6;13:905210. doi: 10.3389/fmicb.2022.905210

TABLE 3.

Effect of halotolerant PGPR isolates on growth parameters in rice seedlings at 21 Days After Planting.

Treatments	Code	IAA (μg/mL)	Nitrogenase activity (μM/mL/h)	Plant height (cm)	Root length (cm)	Plant dry weight (mg)
Control (without isolates)	S₀	0.000	0.000	2.87 ± 0.67^ab	6.90 ± 0.46^a	20.00 ± 2.00^abc
H-PGPR isolate from rice plant 1	S₁	0.387^ab	2.018^ab	2.73 ± 1.01^ab	9.77 ± 2.86^abc	15.67 ± 2.08^a
H-PGPR isolate from rice plant 2	S₂	0.317^ab	2.200^ab	4.50 ± 4.52^ab	10.30 ± 2.26^abc	16.67 ± 3.51^ab
H-PGPR isolate from rice plant 3	S₃	0.592^ab	3.207^abc	9.13 ± 7.07^b	12.07 ± 1.27^d	33.34 ± 8.14^d
H-PGPR isolate from rice plant 4	S₄	0.328^ab	2.001^ab	4.27 ± 2.25^ab	10.47 ± 1.19^abc	21.33 ± 3.06^abc
H-PGPR isolate from rice plant 5	S₅	0.648^abc	2.217^ab	6.13 ± 2.61^ab	12.17 ± 0.70^d	27.33 ± 3.06^cd
H-PGPR isolate from mangrove 1	S₆	0.592^abc	2.217^ab	6.50 ± 5.20^ab	11.17 ± 1.07^bc	24.67 ± 8.14^bc
H-PGPR isolate from mangrove 2	S₇	0.293^ab	1.117^a	5.63 ± 2.56^ab	8.57 ± 1.05^abc	20.34 ± 2.31^abc
H-PGPR isolate from mangrove 3	S₈	0.292^ab	1.182^ab	5.10 ± 1.47^ab	8.73 ± 1.95^abc	18.67 ± 2.08^ab
H-PGPR isolate from mangrove 4	S₉	0.308^abc	1.322^abc	4.77 ± 2.83^ab	10.93 ± 1.85^bc	21.66 ± 1.53^abc
H-PGPR isolate from mangrove 5	S₁₀	0.273^ab	1.121^ab	2.33 ± 0.21^a	10.00 ± 0.70^abc	19.67 ± 3.21^abc
H-PGPR isolate from wild grass 1	S₁₁	0.281^ab	1.101^a	4.13 ± 3.48^ab	10.63 ± 1.91^bc	22.00 ± 2.00^abc
H-PGPR isolate from wild grass 2	S₁₂	0.301^ab	1.481^ab	5.30 ± 2.85^ab	9.17 ± 1.10^abc	19.33 ± 1.53^abc
H-PGPR isolate from wild grass 3	S₁₃	0.199^b	1.332^abc	4.60 ± 1.39^ab	10.80 ± 2.69^bc	22.66 ± 0.58^abc
H-PGPR isolate from wild grass 4	S₁₄	0.232^a	1.411^ab	5.50 ± 3.39^ab	9.00 ± 2.46^abc	23.34 ± 3.06^abc
H-PGPR isolate from wild grass 5	S₁₅	0.187^b	1.033^ab	5.60 ± 2.86^ab	8.13 ± 3.23^ab	22.67 ± 2.52^abc

Figures are the mane of triplicates. Figures followed by the same notation are not significantly different based on Duncan Multiple Range Test at 5% real level. Figures followed by the same letter are not significantly different.