%0 Journal Article
%T Effect of freezing stress on the membrane system of the open-field winter cabbage<br>冬季田间冻害胁迫对露地越冬甘蓝膜系统的影响
%A LI Jian-Yong
%A ZHANG Zhen-Xian
%A GE Jun-Qing
%A WANG Lei
%A SHI Xiu-Zhu
%A <br>李建勇
%A 张振贤
%A 葛均青
%A 王磊
%A 史修柱
%J 中国生态农业学报
%D 2003
%I 
%X Freezing resistance of 4 cabbages varieties was studied under open-field winter growth seasons. The results show that the electrolyte leakage and content of malondialdehyde ( MDA) in cabbage leaves increase as temperature declines, especially the electrolyte leakage in "8398" and "8132" declines by 50% in January, and membrane system is damaged seriously. The activity of superoxide dismutase (SOD) of "8398" , "8132" and "Jingfeng No. 1" declines quickly under freezing temperature conditions. The peroxides (POD) activity increases as temperature declines under freezing stress. But the electrolyte leakage and content of malondialdehyde (MDA) in "Donggua No. 1" are lower than those of "8398" , "8132" and "Jingfeng No. 1" . Under freezing stress in January, the activity of SOD and POD in "Donguan No. 1" still remains higher. It is indicated that freeze-resistance of "Dongguan No. 1" is strong.
%K Open-field winter cabbage
%K Freezing stress
%K Membrane system<br>露地越冬甘蓝
%K 冻害胁迫
%K 膜系统
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=03F54A49DE00578AA0E5DDF5BC021AA7&cid=1A8B5357F0EF07B8&jid=AB3ABF502E2E1FF39F0E3B80164C9031&aid=AC01AE71F538867F&yid=D43C4A19B2EE3C0A&vid=708DD6B15D2464E8&iid=38B194292C032A66&sid=9FFCC7AF50CAEBF7&eid=BFE7933E5EEA150D&journal_id=1671-3990&journal_name=中国生态农业学报&referenced_num=0&reference_num=6