三唑酮对离体水稻叶片衰老的延缓作用

Retardation of Senescence by Tridadimefon in Detached Rice Leaves

用质量浓度为 2 0mg/L的三唑酮溶液处理提高叶片的蛋白质含量和叶绿素含量 ,表明三唑酮能延缓水稻叶片的衰老 叶片衰老过程中 ,超氧物歧化酶 (SOD)、过氧化氢酶 (CAT)活性和抗坏血酸 (AsA)、还原型谷光甘肽 (GSH)含量降低 ,三唑酮处理抑制了它们的降低 过氧化物酶 (POD)活性和丙二醛 (MDA)含量提高 ,三唑酮处理抑制它们的提高 结果表明 。

The contents of soluble proteins and chlorophyll of the detached leaves of rice treated by triadimefon(mass concentration=20 mg/L) increased. The results indicated that triadimefon retarded the senescence of rice leaves. During the senescence of detached rice leaves, both the activities of superoxide dismutase and catalase and the contents of ascorbic acid and reduced gluthione decreased, which was inhibited by triadimefon. These results suggested that triadimefon enhanced the protective ability against enhanced lipid peroxidation.