The use of osmoregulators and antioxidants to mitigate the adverse impacts of salinity stress in diploid and tetraploid potato genotypes (Solanum spp.)

Chemical and Biological Technologies in Agriculture

Table 2 Plantlet water content % (PWC), chloride (Cl⁻), sodium (Na⁺) and potassium (K⁺) content (mmol kg⁻¹ FW) of 13 genotypes of potato divided into 7 tetraploid cultivars of Solanum tuberosum (tbr), and 6 diploid clones of S. chacoense (chc) grown in vitro under stress conditions

Genotypes	PWC %		Cl⁻ (mmol kg⁻¹ FW)		Na⁺ (mmol kg⁻¹ FW)		K⁺ (mmol kg⁻¹ FW)
Genotypes	Control	Stress	Control	Stress	Control	Stress	Control	Stress
Tetraploid cultivars of S. tuberosum (tbr)
Agata	91.0	81.0	39.0	307.00	38.0	294.67	82.0	50.50
Atlantic	93.0	76.0	44.0	315.33	41.0	312.33	82.0	50.70
Anya	93.0	58.0	43.0	426.67	44.0	416.33	80.0	27.33
Diamond	93.0	85.0	34.0	215.00	33.0	211.67	81.0	56.67
Gala	93.0	55.0	43.0	440.03	45.0	423.53	80.0	26.40
Kennebec	94.0	78.0	35.0	316.67	30.0	299.00	85.0	52.03
Russet Burbank	94.0	77.0	55.0	242.00	52.0	240.00	82.0	54.47
Diploid clones of S. chacoense (chc)
A-6	94.0	90.0	20.0	161.00	17.0	239.67	82.0	70.67
B-7	93.0	72.0	24.0	255.33	21.0	309.00	67.0	30.00
C-8	93.0	89.0	18.0	175.67	15.0	136.33	81.0	78.33
C-9	94.0	73.0	35.0	249.33	28.0	292.33	76.0	58.67
D-2	93.0	88.0	25.0	232.67	22.0	214.33	80.0	73.67
D-3	92.0	76.0	22.0	255.00	20.0	272.67	78.0	65.67
LSD (0.05)	3.401		9.241		10.341		2.333

Explants were grown on media supplemented with three different concentrations of NaCl (100, 200 or 300 mmol L⁻¹) and the average tested parameters over the combined three levels of stress were compared with the control (no stress)