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| Effects of simulated atmospheric Cd deposition flux on seed germination of water spinach |
| Received:July 12, 2020 |
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| KeyWord:atmospheric Cd deposition flux;water spinach;seed germination;germination kinetics |
| Author Name | Affiliation | E-mail | | DU Jin-meng | School of Water Conservancy and Environment, Chang'an University, Xi'an 710054, China
Institute of Botanty, Jiangsu Province and Chinese Academy of Sciences, Nanjing Botanical Garden, Mem Sun Yat Sun, Nanjing 210046, China
Jiangsu Engineering Research Center of Aquatic Plant Resources and Water Environment Remediation, Nanjing 210046, China
Key Laboratory of Hydrology and Ecological Effects of Ministry of Education of Chang'an University, Xi'an 710054, China | | | YI Xiu | School of Water Conservancy and Environment, Chang'an University, Xi'an 710054, China
Key Laboratory of Hydrology and Ecological Effects of Ministry of Education of Chang'an University, Xi'an 710054, China | | | CUI Jian | Institute of Botanty, Jiangsu Province and Chinese Academy of Sciences, Nanjing Botanical Garden, Mem Sun Yat Sun, Nanjing 210046, China
Jiangsu Engineering Research Center of Aquatic Plant Resources and Water Environment Remediation, Nanjing 210046, China | jcui@cnbg.net | | WANG Wei | Institute of Botanty, Jiangsu Province and Chinese Academy of Sciences, Nanjing Botanical Garden, Mem Sun Yat Sun, Nanjing 210046, China
Jiangsu Engineering Research Center of Aquatic Plant Resources and Water Environment Remediation, Nanjing 210046, China | | | CHANG Ya-jun | Institute of Botanty, Jiangsu Province and Chinese Academy of Sciences, Nanjing Botanical Garden, Mem Sun Yat Sun, Nanjing 210046, China
Jiangsu Engineering Research Center of Aquatic Plant Resources and Water Environment Remediation, Nanjing 210046, China | | | LIU Xiao-jing | Institute of Botanty, Jiangsu Province and Chinese Academy of Sciences, Nanjing Botanical Garden, Mem Sun Yat Sun, Nanjing 210046, China
Jiangsu Engineering Research Center of Aquatic Plant Resources and Water Environment Remediation, Nanjing 210046, China | | | YAO Dong-rui | Institute of Botanty, Jiangsu Province and Chinese Academy of Sciences, Nanjing Botanical Garden, Mem Sun Yat Sun, Nanjing 210046, China
Jiangsu Engineering Research Center of Aquatic Plant Resources and Water Environment Remediation, Nanjing 210046, China | |
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| Abstract: |
| Atmospheric Cd deposition seriously threatens the safety of vegetable production and the effect on seed germination could be benefit to formulate relevant prevention and control policies. In this study, six mainstream water spinach varieties in Nanjing market[white bone big leaf(WBB), white bone willow leaf(WBW), willow leaf, shuangji bamboo leaf(SJB), special Thailand, and authentic trident] were evaluated, and three gradients of Cd deposition flux(3.0, 9.0 mg·m-2, and 18.0 mg·m-2)were set up for a 7-day seed germination experiment. It was found that these three Cd deposition fluxes reached the peak germination for WBB and SJB one day earlier than CK, which significantly reduced the germination potential of WBB; the root length of WBB, WBW, and special Thailand; and the root length vitality index of WBW and special Thailand. It significantly increased the germination potential, germination index, root growth vitality index, and fresh weight vitality index of willow leaf, as well as the vitality index of SJB. Correlation analysis found that atmospheric Cd deposition fluxes were significantly negatively and positively correlated with the root growth vitality index of both WBW and willow leaf, respectively, and were significantly negatively correlated with the root rot rate of both WBB and SJB. The germination of both WBW and willow leaf was greatly affected by atmospheric Cd deposition flux. A suitable amount of Cd deposition flux could alleviate the root rot condition of the seeds of SJB; the germination status of special Thailand and authentic trident varieties were not significantly affected by atmospheric Cd deposition flux. |
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