Table 1 Mean values of the morphological parameters evaluated for the sunflower germplasm maintained in the various hydroponic platforms.

Hydroponic platform	No. inbred line sown	Survivability%	Hyper hydration%	pH fluctuation	Overall growth rate per week		Leaf area (cm⁻¹)		Chlorophyll contents
Hydroponic platform	No. inbred line sown	Survivability%	Hyper hydration%	pH fluctuation	Control	Osmotic stress	Control	Osmotic stress	Control	Osmotic stress
HP1	12	43.21^c ± 9.45	6.51^b ± 1.93	Stable (5.8 ± 0.1)	0.16^c ± 0.10	0.11^b ± 0.03	23.56^c ± 5.19	17.22^c ± 2.66	5.32^b ± 1.16	3.51 ± 0.82
HP2	12	80.01^b ± 4.52	12.31^a ± 2.21	High (5.8‒7.6)	0.26^b ± 0.15	0.16^b ± 0.05	39.35^b ± 7.12	23.52^b ± 3.61	10.32^a ± 1.31	6.24 ± 1.16
HP3	32	98.34^a ± 0.73	0.00	Stable (5.8 ± 0.3)	0.47^a ± 0.19	0.28^a ± 0.08	94.13^a ± 10.35	51.27^a ± 4.34	12.16^a ± 2.41	7.66 ± 1.14

HP1 = Hydroponic platform with roots directly submerged in nutrient media; HP2 = Two pans with gravelanchoring substrate, HP3 = Two pans with glass beads anchoring substrate.

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