Floresta e Ambiente
Floresta e Ambiente
Original Article Silviculture

Irrigation Regimes on Growth and Metabolic Processes of Enterolobium contortisiliquum Seedlings

Felipe Turchetto; Maristela Machado Araujo; Luciane Almeri Tabaldi; Adriana Maria Griebeler; Álvaro Luís Pasquetti Berghetti; Daniele Guarienti Rorato; Felipe Manzoni Barbosa; Victória Martini Sasso

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Abstract: In forest nurseries, one of the factors that change the growth and quality of seedlings is water supply, which has a direct influence on metabolic processes such as stomatal conductance and photochemical efficiency of photosystem II. This study aims to identify the influence of different watering regimes as well as the use of a water-retaining polymer on the initial growth and metabolic processes of Enterolobium contortisiliquum seedlings. The experimental design was in random blocks with a factorial scheme. Morphological attributes, as well as physiological and biochemical attributes were investigated. We verified that the performance of E. contortisiliquum seedlings depends on the watering regime provided to the plants; furthermore, up to 60 days after the application of the treatments, both the height and diameter of the collection and the leaf water potential were similar in the water regimes of 8 mm day-1 and 12 mm day-1.


abiotic stress, water potential, oxidative stress, antioxidant enzymes


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