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. 2019 Dec 23;14(12):e0226542. doi: 10.1371/journal.pone.0226542

Fig 7. Analysis of all indexes with different treatment by GGE biplot.

Fig 7

WW: half-strength Hoagland’s nutrient solution alone; WW+ML: half-strength Hoagland’s nutrient solution and 100 μmol/L melatonin by leaf; WW+MR: half-strength Hoagland’s nutrient solution and 100 μmol/L melatonin by root; PEG: half-strength Hoagland’s nutrient solution plus 15% PEG 6000 treatment; PEG+ML: half-strength Hoagland’s nutrient solution plus 15% PEG 6000 treatment and 100 μmol/L melatonin by leaf; PEG+MR: half-strength Hoagland’s nutrient solution plus 15% PEG 6000 treatment and 100 μmol/L melatonin by root. PH: plant height; SP: seed pod; SPP: seeds per plant; SOD: superoxide dismutase; POD: peroxidase; CAT: catalase; MDA: the content of malondialdehyde; H2O2: hydrogen peroxide content; O2·-: superoxide anion production raes; Fv/Fm: energy conversion efficiency; NPQ: photochemical quenching coefficient; ΦPSII: PSII actual photochemical quantum yield; ETR: electron transfer rate; Pn: net photosynthetic rate; Ci: intercellular CO2 concentration; Tr: transpiration rate; Gs: stomatal conductance.