Table 1.

Results of the four bioassays applied on the microalgal biomass from Scenedesmus obliquus for the eight treatments (T1–T8) tested at two different concentrations (in g/L). The gibberellin-like effect was determined through a germination index bioassay in watercress seeds (Lepidium sativum), the auxin-like effect was determined according to the mung bean (Vigna radiata) and cucumber (Cucumis sativus) cotyledon root formation bioassay and the cytokinin-like effect according to the excised cucumber (Cucumis sativus) cotyledon root expansion bioassay. Results are expressed in a percentage as means ± standard deviation (n = 3) considering distilled water as the control (100%). The values highlighted in bold represent the two best results for each bioassay for both microalgal concentration.

	Gibberellin-Like Effect		Auxin-Like Effect				Cytokinin-Like Effect
	Germination Index (Watercress Seeds)		Mung bean Bioassay (Root Formation)		Cucumber Bioassay (Root Formation)		Cucumber Expansion Bioassay (Mass of Cotyledons)
Treatments
	0.1 g/L	0.5 g/L	0.5 g/L	2 g/L	0.5 g/L	2 g/L	0.5 g/L	2 g/L
Commercial	93.1 ± 2.8	102.1 ± 3.2		94.3 ± 13.1		125.8 ± 12.1		92.9 ± 13.1
T 1	139.1 ± 1.9	118.9 ± 3.2	137.7 ± 3.3	109.4 ± 26.7	130.6 ± 21.3	122.6 ± 21.9	58.8 ± 8.9	68.7 ± 9.9
T 2	118.8 ± 3.1	108.2 ± 4.5	137.7 ± 3.3	147.2 ± 27.9	134.7 ± 28.4	123.4 ± 11.6	160.9 ± 68.7	71.9 ± 11.1
T 3	86.5 ± 5.2	88.1 ± 5.8	126.4 ± 4.3	37.7 ± 10.1	141.9 ± 4.6	123.4 ± 11.6	68.5 ± 7.3	200.3 ± 38.8
T 4	81.1 ± 4.9	91.1 ± 6.2	113.2 ± 22.6	122.6 ± 15.1	99.2 ± 15.4	112.1 ± 10.6	89.6 ± 24.3	287.5 ± 59.2
T 5	109.2 ± 3.2	113.1 ± 4.9	145.3 ± 11.8	164.2 ± 8.1	101.6 ± 22.7	101.6 ± 12.5	88.7 ± 29.9	70.8 ± 11.1
T 6	121.8 ± 5.8	100.2 ± 2.3	150.9 ± 8.7	158.5 ± 9.8	122.6 ± 8.7	100.8 ± 18.3	245.1 ± 55.9	65.1 ± 21.8
T 7	97.9 ± 6.1	84.6 ± 3.8	118.9 ± 16.9	75.5 ± 7.8	141.9 ± 4.6	127.4 ± 18.3	100.99 ± 32.5	80.8 ± 20.4
T 8	79.3 ± 5.4	82.8 ± 4.1	167.9 ± 14.2	135.8 ± 16.9	112.1 ± 17.7	140.3 ± 14.3	93.9 ± 12.5	68.3 ± 20.1