Identification of Barley Varieties Tolerant to Cadmium Toxicity |
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Authors: | Fei Chen Fang Wang Guoping Zhang Feibo Wu |
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Institution: | (1) Department of Agronomy, College of Agriculture and Biotechnology, Huajiachi Campus, Zhejiang University, Hangzhou, 310029, China |
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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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Keywords: | Barley (Hordeum vulgare) Cadmium Variety Growth Metal uptake Tolerance |
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