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Journal of soil science and plant nutrition

versão On-line ISSN 0718-9516

Resumo

WU, Y. Y  e  ZHAO, K. Root-exuded malic acid versus chlorophyll fluorescence parameters in four plant species under different phosphorus levels. J. Soil Sci. Plant Nutr. [online]. 2013, vol.13, n.3, pp.604-610.  Epub 27-Ago-2013. ISSN 0718-9516.  http://dx.doi.org/10.4067/S0718-95162013005000048.

The amount of root-exuded malic acid and chlorophyll fluorescence parameters (the minimum chlorophyll fluorescence; the maximum quantum yield of photosystem II) in four plant species (Broussonetia papyrifera, Morus alba, Orychophragmus violaceus and Brassica napus) at different phosphorus levels was studied. A linear equation presents the minimum chlorophyll fluorescence (Fo) or the maximum quantum yield of photosystem II (Fv/Fm) and the amount of root-exuded malic acid. Broussonetia papyrifera and Orychophragmus violaceus easily adapted to a low-phosphorus environment. A low-cost method was used for assessing plant adaptability to a low-phosphorus environment when no chlorophyll fluorescence instrument was available.

Palavras-chave : Adaptability; chlorophyll fluorescence parameters; malic acid; low phosphorus environment.

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