Summary
This experimental study evaluated selenium biofortification of three vegetable crops (tomato, lettuce, melon) applied as seed immersion pre-treatment (0–1 mg L⁻¹) or to seedlings via nutrient solution irrigation (2 mg L⁻¹) and foliar spray (5 mg L⁻¹). Both application routes significantly enhanced antioxidant status and vitamin C concentration across all three species, with selenium seed treatment also positively modifying melon growth, whilst seedling-stage applications showed only minor biomass effects.
Regional applicability
The study was conducted in Mexico; transferability to United Kingdom conditions would depend on adaptation to cooler growing environments and UK protected cropping systems. The methodology and biofortification approach are applicable to UK horticulture, particularly for protected vegetable production, though local agronomic trials would be needed to optimise selenium concentrations for UK soil and climate conditions.
Key measures
Fresh weight, dry weight, leaf area, oxidation-reduction potential (ORP), vitamin C concentration in photosynthetic tissues
Outcomes reported
The study measured growth parameters (fresh and dry weight, leaf area), oxidation-reduction potential, and vitamin C concentration in seedling leaves of tomato, lettuce and melon following selenium seed pre-treatment or foliar/irrigation application. Both application methods were assessed for effects on antioxidant status.
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