Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《CHINESE JOURNAL OF APPLIED AND ENVIRONMENTAL BIOLOGY》 1997-01
Add to Favorite Get Latest Update

EFFECT OF Cd~(2+) ON SEED VIGOR OF ZEA MAYS L. AND ANTAGONISM OF Ca~(2+) TO Cd~(2+)

Song Songquan; Jian Weijun & Fu Jiarui(School of Life Sciences, Zhongshan University, Guangzhou 510275)  
Seeds of Zea mays L. were treated with different concentrations of Cd2+ and different combinations of Ca2+ (5 or 10 mmol/L) and Cd2+ (0, 0. 1, 0. 2. 0. 3, 0. 4 and 0. 5 mmol/L),and the toxic action of Cd2+ on maize seed vigor and antagonism of Ca2+ to Cd2+ were studied. Within 0~0. 5 mmol/L Cd2+ levels, germination percentage of seeds and growth rate of seedlings were decreased along with the increment of Cd2+ concentration. In the meantime, Cd2+ could reduce the activities of superoxide dismutase (SOD) and catalase (CAT), and could increase the MDA (malondialdehyde) content of the product of membrane lipids peroxidation. As maize seeds were treated with different combinations of Ca2+ and Cd2+,Ca2+ could decrease or/and remove the toxic action of Cd2+ on seed vigor and seedling growth, in which the antagonism of 10 mmol/L Ca2+ was more obvious than that of 5 mmol/L Ca2+.
【Fund】: 国家自然科学基金;;广东省科委青年科学基金
【CateGory Index】: Q945
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved