Title :
Effects of Ca(NO3)2 Stress on the Growth and Physiological Indexes of Cucumber Seedlings
Author :
Sun, Yongdong ; Luo, Weirong ; Li, Xinzheng ; Qi, Anguo
Author_Institution :
Sch. of Horticulture & Landscape Archit., Henan Inst. of Sci. & Technol., Xinxiang, China
Abstract :
Effects of Ca(NO3)2 stress on the growth, membrane permeability and antioxidant enzyme activities of cucumber seedlings were investigated. Two cucumber cultivars (Chun 4 and Jinyou 1) were used by sand culture. The results were as follows: relative water content (RWC) of the leaves and roots in two cultivars all decreased when Ca(NO3)2 stress increased. Meanwhile, the membrane permeability, malondialdehyde (MDA) contents and the contents of water-soluble sugar of two cultivars increased significantly with Ca(NO3)2 stress. Whereas the activities of superoxide dismutase (SOD) and peroxidase (POD) in two cultivars increased significantly in low Ca(NO3)2 concentration, and then decreased with the increase of Ca(NO3)2 concentration.
Keywords :
crops; enzymes; membranes; permeability; Ca(NO3)2 stress; Chun 4 cucumber cultivar; Jinyou 1 cucumber cultivar; antioxidant enzyme activities; cucumber cultivars; cucumber seedlings; malondialdehyde contents; membrane permeability; peroxidase; physiological indexes; relative water content; sand culture; superoxide dismutase; water-soluble sugar; Biochemistry; Biomass; Biomembranes; Humidity; Minerals; Nitrogen; Permeability; Soil; Stress; Sun; Ca(NO3)2 stress; cucumber; growth; physiological indexes; seedling;
Conference_Titel :
Environmental Science and Information Application Technology, 2009. ESIAT 2009. International Conference on
Conference_Location :
Wuhan
Print_ISBN :
978-0-7695-3682-8
DOI :
10.1109/ESIAT.2009.110
