湖南农业大学学报（自然科学版）2016，Vol.42Issue(5)：496-499,4.
外源褪黑素对高温胁迫下茄子幼苗光合及抗氧化特性的影响
Effects of exogenous melatonin on photosynthesis and antioxidant activity of eggplant seedlings under high temperature stress
摘要
Abstract
In this study, the eggplant(Solanum melongenaL.) seedlings planted in the nutritive soil cup were placed in high temperature condition for 24 hours after the leaves were sprayed by four different concentrations of melatonin solution( by water as control), then the indexes of the photosynthetic parameters, the activities of SOD, POD and CAT and the content of MDA were measured to study the effect of exogenous melatonin (MT) on photosynthesis and antioxidant properties of eggplant seedlings under high temperature stress. The results showed that foliar application of MT could effectively increase photosynthetic capacity and antioxidant properties of eggplant seedlings under high temperature stress. Compared with the other MT concentration treatments and the control, 150μmol/L had the greatest effect on the contents of chlorophyll (3.69 mg/g) and net photosynthetic rate (12.14μmol/m2·s), the activities of SOD(256.31 U/g) and CAT(41.80 U/g), the content of MDA(16.71 nmol/g). The contents of chlorophyll and net photosynthetic rate of 150μmol/L were significant higher than those of the control, and there were no significant difference on the activities of the SOD and CAT between the 50μmol/L and the 200μmol/L, while the content of MDA of MT treatments were significantly lower than those of the control.关键词
茄子/幼苗/褪黑素/高温胁迫/光合作用/抗氧化特性Key words
eggplant/seedling/melatonin/high temperature stress/photosynthesis/antioxidation activity分类
农业科技引用本文复制引用
余雪娜,李婧娴,谢永东,唐懿..外源褪黑素对高温胁迫下茄子幼苗光合及抗氧化特性的影响[J].湖南农业大学学报（自然科学版）,2016,42(5):496-499,4.基金项目
教育部博士学科点基金项目(20125103120006)；四川省教育厅科研项目(15ZA0011) （20125103120006）
