The damages and the protection responses of leaves of protected peach under enhanced UV -B radiation | UV—B辐射对设施桃叶片的损伤及保护性响应
2013
Yu Nina, Shandong Agricultural University, Tai’an(China), College of Horticulture Science and Engineering | Li Ling, Shandong Agricultural University, Tai’an(China), College of Horticulture Science and Engineering | Chen Xiude, Shandong Agricultural University, Tai’an(China), College of Horticulture Science and Engineering
chinois. 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。
Afficher plus [+] Moins [-]anglais. This study was conducted on leaves of greenhouse –grown’ chunjie’ 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.
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