∪V-B辐射对设施桃叶片的损伤及保护性响应  

THE DAMAGES AND THE PROTECTION RESPONSES OF LEAVES OF PROTECTED PEACH UNDER ENHANCED UV-B RADIATION

作　　者：于妮娜[1] 李玲[1] 陈修德[1] 李冬梅[1] 高东升[1] 

机构地区：[1]山东农业大学园艺科学与工程学院,山东泰安271018

出　　处：《山东农业大学学报（自然科学版）》2013年第3期317-322,共6页Journal of Shandong Agricultural University：Natural Science Edition

基　　金："十二五"国家科技支撑计划项目(2011BAD12B02);山东省水果创新团队资助项目

摘　　要：本试验以设施栽培毛桃品种'春捷'(Prunus persica cv.Chunjie)为试材,研究设施桃叶片在增强UV-B辐射处理下的损伤和保护响应。结果表明:(1)增强UV-B辐射处理下设施桃叶片叶面积减小、相对电导率增加、MDA含量增加、可溶性蛋白含量减少,表明叶片在UV-B处理下受到影响,且UV-B强度越大,影响越大。(2)UV-B辐射处理下叶片SOD、POD活性提高、类黄酮含量增加,表明增强UV-B辐射可以诱导叶片清除活性氧的能力提高,UV-B吸收物质积累以减轻UV-B辐射带来的伤害,增强叶片抵抗UV-B辐射损伤的能力。This study was conducted on leaves of greenhouse -grown＇c hunjie＇peaches （Prunus persica cv. Chunjie） to research the damages and protection responses. The results showed that： （ 1 ） after enhanced UV - B treatment leaf area and the content of soluble protein were reduced, while the relative conductivity and the con- tent of MDA were increased. It indicated leaves were affected under enhanced UV - B radiation and the effects were greater with more intensity of UV - B radiation. （2） After enhanced UV - B treatment the total activity of SOD and POD and the content of falconoid were increased. It indicated enhanced UV - B radiation induced leav- es to improve the ability of scavenging reactive oxygen species and accumulation of the UV - B absorbing material in order to reduce the damages of UV - B radiation, and enhance the resistance of leaves to UV - B radiation damage.

关 键 词：增强UV—B辐射 损伤 保护 

分 类 号：S628[农业科学—园艺学]