TABLE 3.

Development of stems and roots of tomato seedlings treated with different concentrations of extract or biomass of Nostoc strain ATCC 53789^a

Characteristic	Value for:
	Control	Extract			Biomass
		0.2 g liter−1	2 g liter−1	20 g liter−1	0.2 g liter−1	2 g liter−1	20 g liter−1
Stems
Height (cm)	6.8 ± 1.4	1.8 ± 0.4a	1.5 ± 0.4ab	1.2 ± 0.3b	5.5 ± 2.1c	3.6 ± 1.9	3.2 ± 1.4c
Diameter (mm)	0.8 ± 0.1a	1.7 ± 0.3b	1.7 ± 0.2bc	1.5 ± 0.2c	0.9 ± 0.2ade	0.9 ± 0.2ad	0.8 ± 0.3ae
Roots
Length (cm)	6.4 ± 2.2a	2.5 ± 1.0b	2.4 ± 1.0bed	1.4 ± 0.5ce	4.1 ± 1.2af	3.3 ± 0.8g	2.5 ± 1.2defg
No. of secondary roots	4.4 ± 1.7a	3.9 ± 2.1ab	1.7 ± 2.0cd	0.5 ± 0.9ce	4.0 ± 1.1ab	2.7 ± 2.0d	1.3 ± 1.2e
No. of adventitious roots	0.5 ± 0.7a	1.6 ± 1.7abc	2.3 ± 1.3bde	2.3 ± 2.3df	1.1 ± 1.0ac	2.4 ± 1.1eg	2.7 ± 2.1fg

^aEvaluation was made at the end of the test (day 39). Within each row, the same letter beside the mean ± standard deviation values indicates nonsignificant difference between the data (P > 0.05) by ANOVA.