Acumulação e translocação de zinco em mudas de espécies do gênero Eucalyptus e Corymbia

Fortes‐Silva, Rodrigo; Weirich, Sidinei Wolnei; Ros, Clóvis Orlando Da; Scheid, Douglas Leandro; Grolli, Andre Luís; Viel, Patricia

doi:10.1590/1807-1929/agriambi.v19n11p1114-1120

Cited by 2 publications

(1 citation statement)

References 18 publications

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“…Zinc concentrations > 1.0 mg L -1 were toxic for Allium cepa L. growth, affecting mitosis and reducing root development by 50% (PALACIO et al, 2005). The phytotoxic effects of this micronutrient were also observed in the development of forest species seedlings Corymbia citriodora, Eucalyptus saligna, and E. dunnii, reducing root development by 32%, 30%, and 93%, respectively, when cultivated in 980 mg kg -1 of soil (SILVA et al, 2015). However, the threshold of toxicity varies widely among species, and limited information was found in the literature regarding the zinc concentration that limits the root growth of mate plantlets.…”

Section: Resultsmentioning

confidence: 99%

How do clonal plantlets of mate respond to different substrate compositions and shading levels?

et al. 2020

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Mate (Ilex paraguariensis A. St.-Hil) is an arboreal species of great economic and socio-environmental importance in South American countries. This specie presents several difficulties during seminal propagation, and studies related to plantlet production by vegetative propagation are fundamental for obtaining homogenous mate plantations with high leaf productivity. Therefore, the present study aimed to evaluate the effects of substrate and shading levels on the morphophysiological quality of mate plantlets produced by mini-cuttings. Rooted mini-cuttings of four mate clones were cultivated on commercial substrate, subsurface soil and vermiculite (2:1:1 v/v/v), commercial substrate and subsurface soil (2:1 v/v) or subsurface soil, cattle manure and carbonized rice hulls (2:1:1 v/v/v). After 120 days, the plantlets were randomly distributed on benches to evaluate the effects of 50 and 80% shading screens. Regardless of the clone, the commercial substrate and subsurface soil composition allowed plantlet production with satisfactory development of both aerial part and root system at 120 days of cultivation. Clone 06SM17 produced plantlets with high averages of stem diameter, shoot height, number of leaves, total length, surface area, total volume of roots, and number of root tips. Both shade levels resulted in similar stem diameters, shoot heights, numbers of leaves, and a, b, and total chlorophyll indices. Clonal mate plantlets with satisfactory morphophysiological quality are produced in commercial substrate and subsurface soil (2:1 v/v) under 50 and 80% shading.

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Section: Resultsmentioning

confidence: 99%

How do clonal plantlets of mate respond to different substrate compositions and shading levels?

et al. 2020

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Accumulation Capacity of Nickel and Zinc in Yerba Mate Cultivated in Soils with Contrasting Parent Materials

Ulbrich

Motta

Magri

et al. 2023

Biol Trace Elem Res

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Yerba mate (Ilex paraguariensis St. Hill.) has shown a relatively high capacity for metal absorption and accumulation under field conditions. To further evaluate the accumulation capacity of Ni and Zn, yerba mate clonal seedlings were grown in containers under five rates of Ni or Zn (0, 0.5, 2, 10, and 40 mg kg-1) with three soils originating from different parent material (basalt, rhyodacite, and sandstone). After 10 months, plants were harvested, divided into component parts (leaves, branches, and roots), and evaluated for 12 elements. Use of Zn and Ni enhanced seedling growth under rhyodacite-and sandstone-derived soils at the first application rate. Application of Zn and Ni resulted in linear increases based on Mehlich I extractions; recovery of Ni was smaller than Zn. Root Ni concentration increased from approximately 20 to 1000 mg kg-1 in rhyodacite-derived soil and from 20 to 400 mg kg-1 in basalt-and sandstone-derived soils; respective increases in leaf tissue were ~3 to 15 mg kg-1 and 3 to 10 mg kg-1. For Zn, maximum obtained values were close to 2000, 1000, and 800 mg kg-1 for roots, leaves, and branches for rhyodacite-derived soils, respectively. Corresponding values for basalt-and sandstone-derived soils were 500, 400, and 300 mg kg-1, respectively. Although yerba mate is not a hyperaccumulator, this species has a relatively high capacity to accumulate Ni and Zn in young tissue with the highest accumulation occurring in roots.

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Acumulação e translocação de zinco em mudas de espécies do gênero Eucalyptus e Corymbia

Cited by 2 publications

References 18 publications

How do clonal plantlets of mate respond to different substrate compositions and shading levels?

How do clonal plantlets of mate respond to different substrate compositions and shading levels?

Accumulation Capacity of Nickel and Zinc in Yerba Mate Cultivated in Soils with Contrasting Parent Materials

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