水杨酸对离体青稞叶片衰老的缓解效应  

The Effects of Salicylic Acid on Delayed Senescence in Detached Leaves of Hulless Barley

作　　者：丁晓波[1] 周钰 谭春华[1] 李清[1] 向彬方[1] 段辉国[1,3] 

机构地区：[1]内江师范学院化学与生命科学学院,四川内江641112 [2]四川省马尔康中学,四川马尔康624000 [3]特色农业资源研究与利用四川省高等学校重点实验室,四川内江641112

出　　处：《河南农业科学》2010年第4期30-32,共3页Journal of Henan Agricultural Sciences

基　　金：四川省教育厅重点研究项目(09ZA054);内江师范学院重点研究项目(06NJZ-2);内江师范学院大学生科研项目(08NSD-116);内江师范学院生态学重点建设学科项目

摘　　要：以青稞幼苗离体叶片为试材,在暗培养条件下,研究了水杨酸处理对离体青稞叶片叶绿素总量、丙二醛(MDA)、脯氨酸、可溶性蛋白质含量的影响。结果显示,在离体青稞叶片衰老过程中,叶绿素总量和可溶性蛋白质含量均不断下降,MDA和脯氨酸含量升高。用800 mg/L的水杨酸处理可延缓离体青稞叶片叶绿素总量和可溶性蛋白质含量的降低,抑制MDA、脯氨酸含量的上升。表明水杨酸降低了离体青稞叶片膜脂过氧化程度,延缓了离体青稞叶片衰老的进程。The effects of salicylic acid on contents of chlorophyll, malonyldialdehyde（MDA）,pro_ line, soluble protein in leaves of hulless barley seedlings under dark were analyzed in present study. Results showed that the contents of chlorophyll and soluble protein reduced constantly, and the contents of MDA and proline increased during the senescence of detached hulless barley leaves. 800 mg/L salicylic acid treatment on detached hulless barley leaves could postpone the decline of chlorophyll and soluble protein and the increase of MDA and proline. The results suggested that salicylic acid could alleviate lipid peroxidation and retard the senescence of hulless barley leaves.

关 键 词：水杨酸 叶片衰老 青稞 

分 类 号：S512.3[农业科学—作物学]