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《Shandong Agricultural Sciences》 2004-06
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Effects of K~+ on physiological characteristics of wheat seedlings under water stress

SUI Na~1,LI Meng~1,TIAN Ji-Chun~2,MENG Qing-Wei~1,ZHAO Shi-Jie~1 (1.College of Life Sciences;2.College of Agronomy, Shandong Agricultural University, Taian 271018, China)  
A high yield wheat cultivar Weimai8 and Lumai14(CK) were used as materials to study the effects of K~+ on physiological characteristics of wheat seedlings under water stress. The results showed that low concentration of K~+ could improve net photosynthetic rate(Pn)、efficiency of light energy capture by open PSⅡ(Fv′/Fm′)、photochemical efficiency PSⅡ(φPSⅡ) and photochemical quenching coefficient(qP) of wheat seedling. It could also decrease the contents of and MDA and improved antioxidant enzymatic activities and the content of soluble protein. These could prevent membrane lipid from peroxidating and could reduce the damage to membrane. Treated with low concentration of K~+, Weimai8 had higher ability to resist water stress.
【CateGory Index】: S512.1101
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