%0 Journal Article
%T Photosynthetic responses of wheat and pea seedlings to enhanced UV-C radiation and their resistances<br>增强UV-C辐射作用下小麦和豌豆幼苗光合响应及其相对抗性
%A LI Xue-mei
%A ZHANG Li-hong
%A HE Xing-yuan
%A HAO Lin
%A <br>李雪梅
%A 张利红
%A 何兴元
%A 郝林
%J 应用生态学报
%D 2007
%I 
%X With wheat and pea seedlings as test materials,this paper studied the effects of UV-C radiation on their leaf photosynthetic characteristics and antioxidant enzyme activities.The results showed that enhanced UV-C radiation could markedly decrease the photosynthetic rate(Pn),stomatal conductance(Gs),intercellular CO2 concentration(Ci),transpiration rate(Tr)and carboxylation efficiency(CE)of pea leaves,but for wheat leaves,these parameters were increased first and decreased then.Under UV-C condition,the CO2 compensation point of leaf was increased for pea,but decreased first and increased then for wheat.With the increasing duration of UV-C radiation,the antioxidant enzyme activities of both test plants increased first and decreased then,except that the POD activity of pea and SOD activity of wheat decreased gradually.All of these suggested that wheat had a stronger resistance to short-time UV-C radiation than pea,but,with the prolonged duration of UV-C radiation,the photosynthesis and antioxidant enzyme activities of wheat and pea were all decreased.
%K wheat
%K pea
%K UV-C radiation
%K photosynthesis
%K antioxidant enzyme<br>小麦
%K 豌豆
%K UV-C辐射
%K 光合作用
%K 抗氧化酶
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=42FEDDFE54F8BCD9D5FD1926ABDD7722&aid=479998A3B037706E&yid=A732AF04DDA03BB3&vid=13553B2D12F347E8&iid=38B194292C032A66&sid=9A596D09E9486F3E&eid=9107B2E171152411&journal_id=1001-9332&journal_name=应用生态学报&referenced_num=0&reference_num=34