Abstract
Two successive hydroponic experiments were carried out to identify barley varieties tolerant to Cd toxicity via examining Soil–Plant Analyses Development (SPAD) value, plant height, leaves and tillers per plant, root number and volume, and biomass accumulation. The results showed that SPAD values (chlorophyll meter readings), plant height, leaf number, root number and volume, and biomass accumulation of shoot/root were significantly reduced in the plants grown in 20 μM Cd nutrient solution compared with control, and the uptake and translocation of Zn, Mn, and Cu was also strictly hindered. Furthermore, there was a highly significant difference in the reduction in these growth parameters among varieties, and varieties “Weisuobuzhi” and “Jipi 1” showed the least reduction both in the two experiments, suggesting their high tolerance to Cd toxicity, while “Dong 17” and “Suyinmai 2” with the greatest reduction and the toxicity symptoms appeared rapidly and severely, denoting as Cd-sensitive varieties. Significant variety difference in Cd concentration was also found, with Weisuobuzhi containing the highest and Jipi 1 the lowest Cd concentration in shoots.
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Acknowledgment
Financial supports from the National Natural Science Foundation of China (30571097), the Special Foundation for the Winner of National Excellent Doctora1 Dissertation, the Ministry of Education of China (200556), and Zhangjiang Provincial Natural Science Foundation (R306202) are gratefully acknowledged. Warmest thanks are also expressed to Miss Dong Jing, Miss Lin Jun, Miss Sun Xiaoxian, Mr. Li Guoming, and Mr. Chen Zhefeng, in Agronomy Department, Zhejiang University, for their help in the experiments.
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Chen, F., Wang, F., Zhang, G. et al. Identification of Barley Varieties Tolerant to Cadmium Toxicity. Biol Trace Elem Res 121, 171–179 (2008). https://doi.org/10.1007/s12011-007-8042-2
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DOI: https://doi.org/10.1007/s12011-007-8042-2