%0 Journal Article
%T Inhibition effects of salt stress on photosynthetic activity of Rumex K-1.<br>盐胁迫对杂交酸模叶片光合活性的抑制作用
%A FANG Peng
%A REN Li-li
%A ZHANG Li-tao
%A GAO Hui-yuan
%A <br>房朋
%A 任丽丽
%A 张立涛
%A 高辉远
%J 应用生态学报
%D 2008
%I 
%X With Rumex K-1 seedlings as test materials, this paper studied the effects of different concentration (100 -300 mmol·L-1) NaCl and KCl on their leaf photosynthetic activity and osmotic adjustment. The results showed that at the concentration of 200 mmol·L-1, NaCl had greater inhibition effect on the leaf photosynthetic activity than KCl, but at 300 mmol·L-1, the inhibition effect of KCl was much greater than NaCl. After treated with 300 mmol·L-1 of KCl and NaCl, the leaf water potential was -0.93 MPa and -1.05 MPa, and the osmotic potential was -1.43 MPa and -1.10 MPa, respectively, indicating that the increased damage caused by 300 mmol·L-1 of KCl was not from osmotic stress. Under the stress of 300 mmol KCl·L-1, the leaf Na+ concentration decreased by 88.6%, compared with the control, while the supplement of 25mmol NaCl·L-1 could obviously alleviate the damage of KCl on leaf photosynthesis, which proved that the deficit of Na+ and the accumulation of K+ in Rumex K-1 leaves could be responsible to the enhanced damage caused by 300 mmol·L-1 of KCl.
%K NaCl
%K KCl<br>杂交酸模
%K 光合活性
%K 渗透调节
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=42FEDDFE54F8BCD9D5FD1926ABDD7722&aid=FF397A1A3B3C58E5434476C6BE240B13&yid=67289AFF6305E306&vid=2A8D03AD8076A2E3&iid=F3090AE9B60B7ED1&sid=49507C87FC1E9CB1&eid=F4E0DF030AC3A199&journal_id=1001-9332&journal_name=应用生态学报&referenced_num=1&reference_num=30