Effect of anti-transpiration on growth and magnesium, potassium and calcium uptake in tomato plant
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DOI:10.7606/j.issn.1000-7601.2019.04.15
Key Words: inhibiting transpiration  tomato  potassium  calcium  magnesium  uptake  growth
Author NameAffiliation
LI Hui-xia College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China
Key Laboratory of Plant Nutrition and the Agri-environment in Northwestern China, Ministry of Agriculture, Yangling, Shaanxi 712100, China
School of Agriculture, Ningxia University, Yinchuan, Ningxia 752100, China 
LIU Yan College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China
Key Laboratory of Plant Nutrition and the Agri-environment in Northwestern China, Ministry of Agriculture, Yangling, Shaanxi 712100, China 
CHEN Zhu-jun College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China
Key Laboratory of Plant Nutrition and the Agri-environment in Northwestern China, Ministry of Agriculture, Yangling, Shaanxi 712100, China 
ZHOU Jian-bin College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China
Key Laboratory of Plant Nutrition and the Agri-environment in Northwestern China, Ministry of Agriculture, Yangling, Shaanxi 712100, China 
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Abstract:
      It is well known that nutrition disorder reduces yield and quality of tomato in solar greenhouses in northern China. This study investigated the effect of transpiration on uptake and transport of magnesium (Mg), potassium (K), and calcium (Ca) in tomato plants. Two independent hydroponic experiments with different time periods (24 h and 24 d) were set up to evaluatethe effect of spray application of atranspiration inhibitor on the growth and Mg uptake of two tomato cultivars (Zhongza 9 and Gailiangmaofen). The short term (24 h) results showed that after spraying transpiration inhibitor, the transpiration and Mg uptake of tomato decreased by 20.6% and 4.5%, respectively, and it was positively correlatedwith transpiration and Mg absorption. After 24 d of spraying transpiration inhibitor, the growth and photosynthetic rate decreased, and decrease in the transpiration and Mg uptake of tomato was 47.5% and 17.1%, respectively. Meanwhile,K and Ca uptake were also reduced by 12.9% and 44.1%, respectively.In conclusion, inhibiting transpiration reduced Mg, K, and Ca uptake and transport in tomato plants.Adverse environmental factors such as high humidity and weak sunlight will induce nutrition disorder intomato plants in greenhouses in northern China.
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