桂花开花和衰老过程中乙烯及脂质过氧化水平初探  

A Preliminary Study on Ethylene Production and Lipid Peroxidation in Florescence and Flower Senescence of Osmanthus fragrans Lour.

作　　者：朱诚[1,2] 刘非燕[1,2] 郭达初[1,2] 沈立新[1,2] 

机构地区：[1]浙江农业大学生物科学系 [2]杭州植物园

出　　处：《园艺学报》1998年第3期275-279,共5页Acta Horticulturae Sinica

基　　金：杭州市园林文物局科技基金

摘　　要：研究了桂花开花和衰老过程中乙烯的产生和脂质过氧化水平。结果表明，花瓣的可溶性蛋白质含量在衰老期间下降，乙烯释放量和呼吸速率具有明显的跃变高峰；ＳＯＤ和ＣＡＴ活性在盛花期后迅速下降，Ｏ－·２产生速率和ＭＤＡ含量迅速上升，膜透性增加。认为乙烯的产生和脂质过氧化水平的增加是桂花衰老的主要生理原因。The levels of ethylene production and lipid peroxidation were investigated during florescence and flower senescence of Osmanthus fragrans Lour.The results showed that the soluble protein content decreased during senescence.The highest rates of ethylene production and respiration were found to be after the peak flowering stage.The O -· 2 productive rate and MDA content as well as the membrane permeability increased while the activities of SOD and CAT decreased rapidly during senescence.The increase of ethylene production and the rising of lipid peroxidation level are consi dered to be the main physiological causes for the flower senescence.

关 键 词：桂花 乙烯 呼吸速率 脂质过氧化 

分 类 号：S685.130.1[农业科学—观赏园艺]