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《Pratacultural Science》 2017-12
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Physiological response of four wild Poato soil pH

Tian Yan-feng;Bai Xiao-ming;Zhang Xiao-jun;Wei Zheng-qiang;Chen Run-juan;Niu Xu-yang;College of Grassland Science,Gansu Agricultural University/Key Laboratory of Grassland Ecosystem,Ministry of Education/Pratacultural Engineering Laboratory of Gansu Province/Sino-U.S.Centers for Grazingland Ecosystem Sustainability;  
To investigate the mechanism by which soil pH affects physiological characteristics of wild bluegrass and to determine the optimum growth pH for wild bluegrass,the physiological indicators of four wild bluegrasses collected in Gansu Province were determined under 8 pH treatments.The results showed that in the range of 3 to 10,with an increase in pH,relative membrane permeability,free proline(Pro),soluble sugar(SS),and MDA and POD activity of the four wild bluegrasses showed first a decrease and then an increase,whereas the soluble protein content(SP)and activity of superoxide dismutase(SOD)and catalase(CAT)showed an opposite trend.The optimal pH values,in which damage to the bluegrass was minimal,was 7 for Kentucky bluegrass,small medicine bluegrass,and annual bluegrass,and 6 for hard bluegrass.These results provide information for the maintenance and management of Kentucky bluegrass lawns,as well as the introduction and domestication of wild Kentucky bluegrass.
【Fund】: 国家自然科学基金(31560667);; 甘肃农业大学校级自列课题(GSAU-ZL-2015-054)
【CateGory Index】: S688.4
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