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Ciência Florestal
Article . 2011
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PERFORMANCE OF Peltophorum dubium (Sprengel) Taubert, Parapiptadenia rigida (Bentham) Brenan and Enterolobium contortisiliquum (Vell.) Morong CULTIVATED IN COPPER CONTAMINATED SOIL

Authors: Silva, Rodrigo Ferreira da; Lupatini, Manoeli; Antoniolli, Zaida Inês; Leal, Lineu Trindade; Moro Junior, Carlos Augusto;

PERFORMANCE OF Peltophorum dubium (Sprengel) Taubert, Parapiptadenia rigida (Bentham) Brenan and Enterolobium contortisiliquum (Vell.) Morong CULTIVATED IN COPPER CONTAMINATED SOIL

Abstract

Solos contaminados por cobre podem interferir no desenvolvimento fisiológico e no estabelecimento de plantas. Uma opção para revegetação desses solos é a utilização de espécies florestais nativas tolerantes ao cobre. Este trabalho teve como objetivo avaliar a tolerância de três espécies florestais nativas ao excesso de cobre no solo. As espécies utilizadas foram: angico – Parapiptadenia rigida, canafístula – Peltophorum dubium e timbaúva – Enterolobium contortisiliquum. O delineamento experimental foi inteiramente casualizado, num esquema 3 x 5, sendo três espécies florestais e cinco doses de cobre (0, 64, 128, 192 e 256 mg kg-1 de solo), com seis repetições. Determinou-se a altura de planta, massa seca da parte aérea, comprimento e área superficial específica radicular, teor de cobre na parte aérea e na raiz. A timbaúva e a canafístula apresentam tendência de armazenamento do cobre nas raízes e baixa translocação para a parte aérea. A massa seca da parte aérea da timbaúva e canafístula é incrementada com pequenas doses de cobre, enquanto que a massa seca da parte aérea do angico não é afetada pelas doses testadas. A timbaúva e o angico demonstram maior capacidade de tolerância à contaminação de cobre no solo que a canafístula.

Soils contaminated by copper may interfere with the physiological development and establishment of plants. An alternative for the revegetation of these soils is the use of native species tolerant to copper. This study aimed to evaluate the tolerance of three native forest species to excess copper in the soil. The species used were: angico - Peltophorum dubium, canafistula - P. rigida and timbauva - Enterolobium contortisiliquum. The experiment was completely randomized in a 3 x 5 schedule, with three tree species and five doses of copper (0, 64, 128, 192 and 256 mg kg-1 soil) with six replicates. Plant height, shoot dry weight, length and specific root surface area and copper content in shoots and roots were determined. Canafistula and timbauva species showed storage of copper in roots and low translocation to the shoot. The shoot dry weight of timbauva and canafistula increased with small doses of copper while the shoot dry mass of angico was not affected by the doses tested. The timbauva and angico showed greater capacity for tolerance to copper contamination in the soil than did canafistula.

Keywords

plantas arbóreas nativas, S, tolerância, Agriculture, Forestry, revegetation, revegetação, SD1-669.5, tolerance., woody native plants

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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