Abstract:
Distribution and mobility of nine mineral elements (K, Ca, Na, Mg, Fe, Zn, Cu, Se, and
Cr) in cultured Gentiana rigescens and its root zone soil were determined by atomic
absorption spectroscopy. G. rigescens materials were planted under tea and white papaya
trees in Yun County and Yongde of Lincang area in Yunnan Province of China. The
results showed that G. rigescens and its soil were high in K, Ca, Fe, and Mg. The
concentrations of Na and Mg in the soil were significantly lower than that in the plants.
However, the concentrations of Fe, Cu, Se, and Cr were significantly higher in soils than
that in the plant parts. G. rigescens roots showed high accumulation ratios for Na, Mg,
and K, but low accumulation ratios for Fe, Cu, Se, especially for Cr. Transfer coefficients
indicated G. rigescens might be a good accumulator for Ca.
Keywords: Accumulation, Ecological planting, Atomic absorption spectroscopy, Transfer
coefficient.
