灯盏花总黄酮和抗光氧化能力对外源茉莉酸的响应

 研究用不同浓度的外源茉莉酸处理灯盏花叶片,测定叶片黄酮和叶绿素含量及抗光氧化能力的变化.结果显示:茉莉酸处理后的3d内黄酮含量变化不大,第6天则显著升高;0.5,1.0,1.5mmol/L 3个浓度的茉莉酸处理组黄酮含量均高于对照,且1.5mmol/L处理组黄酮含量明显比0.5和1.0mmol/L处理组低.茉莉酸未对灯盏花光合作用造成损伤,但叶绿素b含量下降;类胡萝卜素含量都有所增加;叶绿素a在茉莉酸浓度为0.5mmol/L时增加,而浓度为1.0和1.5mmol/L时下降.0.5mmol/L处理组抗光氧化能力下降,1.0,1.5mmol/L处理组抗光氧化能力增强.因此,可以把外源茉莉酸应用于灯盏花的人工种植,提高灯盏花有效成分含量.

Response of the total flavonoid content in leaves and resistance to photooxidation of E.breviscapus to exogenous jasmonic acid

In this study,the leaves of Erigeron breviscapus(Vant)Hand.-Mazz were treated by jasmonic acid on different concentrations,the changes of antiphotooxidation ability,the contents of total flavonoid and chlorophyll were examined.These results suggest that in the third day after treated by jasmonic acid,the content of chlorophyll were examined.These results suggest that in the third day after treated by jasmonic acid,the content of total flavonoid had no obvious change,and it increased significantly in the six...