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| Effects of soil cadmium on physiological and biochemical characteristics of Lilium brownii var. viridulum during its growth |
| Received:July 24, 2023 |
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| KeyWord:cadmium;soil;Lilium brownii var. viridulum;physiological response;transfer coefficient;antioxidant enzymes |
| Author Name | Affiliation | E-mail | | WU Jiameng | College of Environment&
Ecology, Hunan Agricultural University, Changsha 410128, China | | | HUANG Yayuan | College of Environment&
Ecology, Hunan Agricultural University, Changsha 410128, China | | | BA Degong | College of Environment&
Ecology, Hunan Agricultural University, Changsha 410128, China | | | WANG Xinqi | College of Environment&
Ecology, Hunan Agricultural University, Changsha 410128, China | | | QIN Si | College of Food Science and Technology, Hunan Agricultural University, Changsha 410128, China | | | DENG Yuling | Hunan Shanshui Qingyang Environmental Protection Technology Co., Ltd., Changsha 410000, China | | | YONG Zhibiao | Hunan Shanshui Qingyang Environmental Protection Technology Co., Ltd., Changsha 410000, China | | | LEI Ming | College of Environment&
Ecology, Hunan Agricultural University, Changsha 410128, China | leiming@hunau.edu.cn |
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| Abstract: |
| The aim of this study was to investigate the effects of different concentrations of Cd in soil on the growth and physiological and biochemical indexes of Lilium brownii var. viridulum. A pot experiment consisting of without Cd and a concentration gradient ranging from low（0.86 mg·kg-1） to medium（2.16 mg·kg-1） to high（4.76 mg·kg-1） Cd was performed. The results showed that the growth of Lilium brownii var. viridulum plants and the chlorophyll content in leave increased with increase of Cd concentration in the soil. The distribution of Cd content in the different parts of the plant was aboveground lower root>leaf>stem>underground stem>upper root>bulb. Thus, the Cd content of the bulb was the lowest and the safest under each concentration treatment. Under the medium concentration of Cd treatment, the enrichment capacity of Lilium root was greater than that of upper root. Soil Cd significantly increased the transfer coefficient of the bulb to underground stem of Lilium brownii var. viridulum（P<0.05）. In addition, the malondialdehyde contents of lily leaves, above-ground stem, bulb, and underground root were significantly increased by 11.72%, 11.31%, 133.72%, and 79.37%, respectively, under the high concentration of Cd treatment（P<0.05）, while superoxide dismutase and catalase enzymes first increased and then decreased. Therefore, Lilium brownii var. viridulum has a strong tolerance to Cd. |
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