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| Effects of Mo pollution on photosynthesis characteristics and yields of winter wheat |
| Received:November 15, 2015 |
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| KeyWord:molybdenum pollution;winter wheat;photosynthesis;yield |
| Author Name | Affiliation | E-mail | | LI Lu | College of Resources and Environment, Huazhong Agricultural University/Micro-element Research Center, Wuhan 430070, China
Hubei Provincial Engineering Laboratory for New-Type Fertilizers, Wuhan 430070, China | | | HU Cheng-xiao | College of Resources and Environment, Huazhong Agricultural University/Micro-element Research Center, Wuhan 430070, China
Hubei Provincial Engineering Laboratory for New-Type Fertilizers, Wuhan 430070, China | | | TAN Qi-ling | College of Resources and Environment, Huazhong Agricultural University/Micro-element Research Center, Wuhan 430070, China
Hubei Provincial Engineering Laboratory for New-Type Fertilizers, Wuhan 430070, China | | | SHI Kai-li | College of Resources and Environment, Huazhong Agricultural University/Micro-element Research Center, Wuhan 430070, China
Hubei Provincial Engineering Laboratory for New-Type Fertilizers, Wuhan 430070, China | | | ZHAO Xiao-hu | College of Resources and Environment, Huazhong Agricultural University/Micro-element Research Center, Wuhan 430070, China
Hubei Provincial Engineering Laboratory for New-Type Fertilizers, Wuhan 430070, China | | | SUN Xue-cheng | College of Resources and Environment, Huazhong Agricultural University/Micro-element Research Center, Wuhan 430070, China
Hubei Provincial Engineering Laboratory for New-Type Fertilizers, Wuhan 430070, China | sxccn@mail.hzau.edu.cn |
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| Abstract: |
| A pot culture experiment was conducted to investigate the effects of different levels of Mo on photosynthesis characteristics and yields of winter wheat. Results showed that appropriate Mo application(0.15 mg·kg-1) increased chlorophyll(Chl) content, photosynthetic rates(Pn) and yields of winter wheat in Mo-deficient soils. The chlorophyll content, photosynthetic rates(Pn), transpiration rates(Tr), stomatal conductance(Gs) and yields of winter wheat were decreased by Mo at 0.15~2000 mg·kg-1. The decline in Pn along with Ci and Gs decreases indicated that stomatal limitation was the main factor for Pn decreases. The Chla/b decreased with increases in Mo pollution levels, indicating that the transformation from Chla to Chlb was blocked under Mo pollution conditions. The life cycle of winter wheat was not completed when Mo levels were higher than 3000~4000 mg·kg-1. |
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