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Full-Text Articles in Life Sciences
Electrical Conductivity Of Nutrient Solution Influenced Photosynthesis, Quality, And Antioxidant Enzyme Activity Of Pakchoi (Brassica Campestris L. Ssp. Chinensis) In A Hydroponic System, Xiaotao Ding, Yuping Jiang, Hong Zhao, Doudou Guo, Lizhong He, Fuguang Liu, Qiang Zhou, Dilip Nandwani, Dafeng Hui, Jizhu Yu
Electrical Conductivity Of Nutrient Solution Influenced Photosynthesis, Quality, And Antioxidant Enzyme Activity Of Pakchoi (Brassica Campestris L. Ssp. Chinensis) In A Hydroponic System, Xiaotao Ding, Yuping Jiang, Hong Zhao, Doudou Guo, Lizhong He, Fuguang Liu, Qiang Zhou, Dilip Nandwani, Dafeng Hui, Jizhu Yu
Agricultural and Environmental Sciences Faculty Research
To find an electrical conductivity (EC) in the nutrient solution used for pakchoi (Brassica campestris L. ssp. Chinensis) cultivation that optimizes the plant’s physiology, growth, and quality, we conducted an experiment with eight EC treatments (from EC0 to EC9.6) in a hydroponic production system (i.e. soilless culture) under greenhouse condition in Shanghai, China. Plants biomass production, leaf photosynthesis, vegetable quality variables, tissue nitrate and nitrite contents, and antioxidant enzyme activities were measured. The results showed that very high (EC9.6) or low EC (EC0-0.6) treatments clearly decreased plants fresh weight (FW) and dry weight (DW), leaf size, leaf water content, leaf …
Effects Of Heat Shock On Photosynthetic Properties, Antioxidant Enzyme Activity, And Downy Mildew Of Cucumber (Cucumis Sativus L.), Xiaotao Ding, Yuping Jiang, Ting Hao, Haijun Jin, Hongmei Zhang, Lizhong He, Qiang Zhou, Danfeng Huang, Dafeng Hui, Jizhu Yu
Effects Of Heat Shock On Photosynthetic Properties, Antioxidant Enzyme Activity, And Downy Mildew Of Cucumber (Cucumis Sativus L.), Xiaotao Ding, Yuping Jiang, Ting Hao, Haijun Jin, Hongmei Zhang, Lizhong He, Qiang Zhou, Danfeng Huang, Dafeng Hui, Jizhu Yu
Biology Faculty Research
Heat shock is considered an abiotic stress for plant growth, but the effects of heat shock on physiological responses of cucumber plant leaves with and without downy mildew disease are still not clear. In this study, cucumber seedlings were exposed to heat shock in greenhouses, and the responses of photosynthetic properties, carbohydrate metabolism, antioxidant enzyme activity, osmolytes, and disease severity index of leaves with or without the downy mildew disease were measured. Results showed that heat shock significantly decreased the net photosynthetic rate, actual photochemical efficiency, photochemical quenching coefficient, and starch content. Heat shock caused an increase in the stomatal …