Differences in biochemical responses to cold stress in two contrasting varieties of rape seed (Brassica napus L.)
Differences in biochemical responses to cold stress in two contrasting varieties of rape seed (Brassica napus L.)作者机构：College of Biological Sciences and Biotechnology Beijing Forestry University Beijing 100083 P. R. China
出 版 物：《Forestry Studies in China》 (中国林学（英文版）)
年 卷 期：2007年第9卷第2期
页 面：142-146页
基 金：National Natural Science Foundation of China NSFC (30271067 30671476)
主 题：spring rape cold stress isozyme
摘 要：Changes in isozymes of peroxidase, catalase, superoxide dismutase, polyphenol oxidase, and esterase and activities of per- oxidase and polyphenol oxidase in two annual Brassica varieties （AS-3 and CON, cold-tolerant and cold-sensitive, respectively） after 4℃ treatment were assayed. After the low temperature treatment, PAGE patterns of isozymes of peroxidase, catalase, superoxide dismutase, polyphenol oxidase, and esterase showed that the expressions and activities of these enzymes in the AS-3 variety were higher than the CON variety. Under normal and cold conditions, peroxidase and esterase activities of AS-3 were higher than those of CON. The relative freezing tolerance of these two cultivars was discussed.
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