Resumo

MARTINEZ-BALLESTEROS, Jennifer; CASTANEDA-CASTRO, Odón; HIDALGO-CONTRERAS, Juan Valente  e  GOMEZ-MERINO, Fernando C.. Biostimulating effects of aluminum on growth and metabolism of sugarcane in vitro. Rev. fitotec. mex [online]. 2023, vol.46, n.2, pp.177-186.  Epub 02-Abr-2024. ISSN 0187-7380.  https://doi.org/10.35196/rfm.2023.2.177.

Aluminum (Al3+) is a beneficial element that at low doses can promote growth, development and metabolism in plants. This research evaluated the effect of aluminum (Al3+) on growth indicators (number of shoots and leaves, shoot size, length and width of leaves, weight of fresh and dry biomass) and biochemical indicators [concentration of chlorophylls (a, b and total), sugars, proteins and amino acids> in sugarcane (Saccharum spp.) varieties Mex 69290 and CP 72-2086, during the multiplication stage under in vitro culture conditions. Four doses of Al3+: 0, 50, 100 and 150 µM were tested at planting, and the variables were measured 30 days later. Data were subjected to oneway analysis of variance and means were compared by the Tukey test (P ≤ 0.05). The application of 100 µM Al3+ in the variety CP 72-2086 increased leaf length and width, number of leaves and shoots, chlorophylls a and b concentration, sugars, proteins and amino acids. The treatment with 50 µM Al3+ in variety Mex 69-290 showed the best biostimulant effect by increasing the number of leaves and shoots, leaf length and width, chlorophyll a, and total sugars. Al3+ had a biostimulant effect by improving growth and biochemical indicators of Mex 69-290 and CP 72-2086 varieties grown in vitro.

Palavras-chave : Saccharum; inorganic biostimulation; beneficial elements; Poaceae; vitroplants.

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