Vol. 69 No: 3

Title:
Effect of Ti(IV) on some Indicators of Physiological Activity in Capsicum Annuum, L.

Authors:
M. CARVAJAL, F. MARTINEZ-SANCHEZ and C.F. ALCARAZ

pp: 427-432

Abstract:
Paprika pepper (Capsicum annuum) L., cv. Negral) plants grown in a greenhouse were supplied Ti(IV) ascorbate through the roots or through leaves. Biomass production, peroxidase (donor: H₂O, oxidoreductase; EC 1.11.1.7) activity, and malic acid, starch and chlorophyll concentrations were determined in different plant organs. It was observed that Ti increased the concentration of some of the metabolites studied and promoted both peroxidase activity and biomass production. The profitable effect of the Ti treatments could occur because they enhance the availability of other nutrients. This effect could be due to the low redox potential of the Ti⁺³/Ti⁺⁴ system that catalyzes the activity of some metallic micronutrients.

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