2021年10月22日 星期五
喷施外源GABA对高温条件下茶树叶片部分生理指标的影响
Effects of spraying exogenous GABA on some physiological indexes of Camellia sinensis leaves under high temperature condition
2021年 第30卷 第5期 页码[69-71]    下载全文[0.7MB]  
Abstract

Taking one-year-old seedling of cultivar ‘Zhongcha 108’ of Camellia sinensis (Linn.) Kuntze as research object, variations of some physiological indexes of leaves under high temperature condition for 0, 4, 8, 24 and 48 h after spraying GABA were assayed. The results show that compared with seedlings without GABA treatment, the contents of GABA, free proline and chlorophyll in leaves of seedlings sprayed with 5 mmol·L-1 GABA increase to different degrees under high temperature condition, malondialdehyde content, relative electrical conductivity and soluble sugar content decrease to different degrees, and antioxidant enzyme (SOD, POD and APX) activities increase at different times in general. It is suggested that spraying GABA can relief high temperature stress on physiological damages of C. sinensis leaves to some extent and enhance heat tolerance of C. sinensis.

关键词γ-氨基丁酸(GABA); 茶树; 高温胁迫; 生理指标
Key wordsγ-aminobutyric acid (GABA); Camellia sinensis (Linn.) Kuntze; high temperature stress; physiological index
作者曹语, 任太钰, 马媛春, 李芳, 房婉萍, 朱旭君
所在单位南京农业大学园艺学院, 江苏 南京 210095
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基金项目国家自然科学基金资助项目(31870680); 国家现代农业产业技术体系项目(CARS-19); 江苏省林业科技创新与推广项目(LYKJ-常州[2020]03); 常州市科技支撑计划项目(农业CE20202003); 滁州市科技计划项目(2020ZN009)