Growth promotion and colonization of switchgrass (Panicum virgatum) cv. Alamo by bacterial endophyte Burkholderia phytofirmans strain PsJN

Table 2 Effects of B. phytofirmans PsJN on plant growth in different switchgrass cultivars

Cultivars	Treatment	No. plants	Root length (cm)	Shoot length (cm)	Total fresh weight (mg)	PsJN/control (%)^a
Shawnee	Control	24	2.3	8.4	50.1
	PsJN	24	2.1	7.8	58.8	117.4
	p-value^b		0.2037	0.2049	0.0717
Nebraska	Control	24	1.5	10.3	40.9
	PsJN	24	1.5	11.6	51.9	126.8
	p-value		0.4160	0.0656	0.0055
Forestburg	Control	34	1.6	8.6	33.7
	PsJN	30	1.8	12.7	54.0	160.1
	p-value		0.1986	0.0000002	0.0000001
Shelton	Control	28	3.3	14.1	117.7
	PsJN	28	3.0	12.0	135.3	115.0
	p-value		0.1579	0.0067	0.0907
Blackwell	Control	28	1.4	9.9	52.6
	PsJN	28	1.5	11.3	64.7	123.0
	p-value		0.2970	0.0998	0.0543
Sunburst	Control	30	0.8	8.5	33.0
	PsJN	28	0.9	10.4	26.4	80.0
	p-value		0.2985	0.0137	0.0731
Cave-in-Rock	Control	33	2.8	14.7	107.8
	PsJN	34	3.1	13.8	113.4	105.2
	p-value		0.2317	0.4052	0.5613

^a PsJN/control (%) means total fresh weight of PsJN inoculated plants over that of control plants.
^b p-value means degrees of statistical significance between PsJN treatment and control using student T-test.

ISSN: 2731-3654