华北农学报2011，Vol.26Issue(1)：131-135,5.
不同基因型玉米叶片衰老与活性氧代谢的关系及其调控
A Study on the Relationship Between the Leaf Senescence and Activate Oxygen Metabolism of Different Maize Varieties and Their Regulation
摘要
Abstract
This research aims to study maize leaves activity and the senescence characteristics of oxygen metabolism and it regulation by using Zhengdan 958 and Yudan 2002. The results showed that SOD, CAT activi ties of different leaves rose and then declined with plant senescence,but MDA contents gradually increased as leaves senescence went on. Although the leaves of the two varieties generally presented a similar tendency in their senescence, their senescence progresses significantly differed. Compared with leaves of Yudan 2002,the content of active oxygen protective enzyme and soluble protein of Zhengdan 958 were higher and declined more slowly, and the content of MDA was lower and rose more gradually. The activities of SOD and CAT of leaves increased in the seed dressing treatments,which resulted in decreased MDA contents and soluble protein degradation rate of leaves. Results suggested that the treatments of maize seed dressing can prolong leaf life, effectively control or slow down the senescence, maintain physiological functions of its leaves during the growth and increase yield.关键词
玉米叶片/衰老/保护酶/植物生长调节剂Key words
Maize leaf/Senescence/Defending enzyme activity/Plant growth regulator分类
农业科技引用本文复制引用
李健,赵宇,李锦锦,杨青华,谌涛,马兴立..不同基因型玉米叶片衰老与活性氧代谢的关系及其调控[J].华北农学报,2011,26(1):131-135,5.基金项目
河南省重大科技攻关项(0522010200) （0522010200）
