Resposta do cafeeiro à inoculação de fungos micorrízicos arbusculares, em latossolo vermelho de cerrado
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Data
2014-01-01
Autores
Konrad, Maria Luiza de Freitas
Furlani, Pedro Roberto
Cassiolato, Ana Maria Rodrigues [UNESP]
da Silveira, Adriana Parada Dias
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Resumo
The aim of this study was evaluate the response of two coffee cultivars (tolerant and sensitive to aluminum - Al), inoculated or not by two arbuscular mycorriza fungi (AMF), Gigaspora margarita and Glomus etunicatum, in cerrado Oxisol, with different base saturation. This experiment was conducted under greenhouse conditions, with a complete randomized design, in a 2×3×2 factorial scheme, consisting of 2 cultivars (tolerante and sensitive to Al), 3 treatments with mycorrhizal (inoculated with two species of AMF and without inoculation) and 3 levels of soil base saturation (30, 45 and 53 V%), with five replicates per treatment. The variables were: plant height, stem diameter, leaf area, shoot dry weight, root fresh weight, nitrate reductase activity, chlorophyll concentration, root colonization and number of AMF spores. Mycorrhizae isolates promoted greater response of coffee plants, in acid soil with high concentration of Al, but this response was observed for both cultivars when plants were colonized by G. margarita. The cultivars evaluated showed no differences in Al tolerance when non inoculated.
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Aluminium tolerance, Arbuscular mycorrhiza, Base soil saturation values, Coffea arabica, Nitrate reductase, Toxic aluminium
Como citar
Bioscience Journal, v. 30, n. 4, p. 933-941, 2014.