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Abstract
The effect of chromium (Cr) on the uptake, distribution and accumulation of nine nutrient elements was studied in two rice genotypes, Xiushui 113 and Dan K5. The effect on elemental concentrations and accumulations varied with Cr level, nutrient element, genotype and plant part. Maximum nutrient accumulation occurred at 10 μM Cr, while the minimum occurred at 100 μM Cr, indicating best plant growth at the 10 μM level. It may be assumed that low Cr level enhance plant growth. The correlation between the concentrations of Cr and nine elements differed among plant parts, but Cr accumulation was significantly and negatively correlated with the accumulation of each element, suggesting that increasing Cr level may create nutrient deficiencies or imbalance in rice.
ACKNOWLEDGMENT
The authors are deeply indebted to Zhejiang Bureau of Science and Technology for its financial support (2005C12024) to the research program.