PEG模拟干旱对茴香生长及精油含量和组分的影响  

Effects of drought simulated by PEG on plant growth,essential oil content and components of Foeniculum vulgare Mill

作　　者：潘春香[1] 何金明[1] 肖艳辉[1] 张振明[1] 郭克婷[1] 赵美琴[1] 

机构地区：[1]韶关学院英东农业科学与工程学院,广东韶关512005

出　　处：《广东农业科学》2015年第13期42-47,共6页Guangdong Agricultural Sciences

基　　金：国家自然科学基金(31070287)

摘　　要：采用水培法,研究不同PEG浓度（0%、5%、12.5%和20%）对茴香生长、精油含量和组分的影响。结果表明：不同PEG浓度处理对茴香的生长（株高、叶片数、叶长、叶宽、鲜重、干重、根冠比和干物率）有抑制作用,而对茴香地上部和地下部的可溶性糖、蛋白质、SOD、POD、MDA、精油含量和成分的影响却不同,其中5%浓度有利于提高地上部和地下部的蛋白质、可溶性糖含量、地下部的精油产量和MAD含量,20%浓度增强了茴香地上部和地下部的SOD和POD活性,提高了地上部的MDA含量和精油产量。茴香地上部精油鉴定出16种成分,其中反式-茴香脑含量为46.30%-62.94%,柠檬烯17.28%-33.16%;地下部鉴定出9种成分,其主要成分莳萝芹菜脑含量为35.26%-58.77%,肉豆蔻醚含量为7.55%-36.36%,γ-萜品烯含量为11.0%-26.01%。反式茴香脑、肉豆蔻醚和γ-萜品烯含量随着PEG浓度的提高而降低,柠檬烯和莳萝芹菜脑呈相反变化趋势。相关性分析显示,精油产量与全株鲜重、干重、可溶性糖、蛋白质、反式茴香脑、γ-萜品烯和肉豆蔻醚正相关,其中与全株鲜重正相关显著,与SOD、POD、MDA、柠檬烯和莳萝芹菜脑呈负相关,其中与SOD和POD活性呈显著负相关。Using the method of hydroponics four treatments （0%, 5%, 12.5% and 20%） were designed to study the effects of different polyethylene glycol6000 （PEG6000）concentrations on the growth, content and components of essential oil in fennel. The results showed that different concentrations of PEG inhibited the growth of fennel （plant height, leaf number, leaf length, leaf width, fresh weight, dry weight, root/shoot ratio and dry matter content）. However their effects on soluble sugar, protein, activities of SOD and POD, MDA content and the content and components of essential oil in fennel varied between the ahoveground part and underground part of the plant. PEG concentration of 5% was beneficial to the accumulation of protein, soluble sugar, yield of essential oil and MDA content for both the aboveground part and the underground part. Concentration of 20% enhanced the activities of SOD and POD in the aboveground and underground parts of fennel, hut improved the MDA content and yield of essential oil in the aboveground part. A total of 16 components were identified in the essential oil of aboveground part of fennel. The main components were （E）-anethole 46.30%-62.94% and limonene 17.28%-33.16%. Nine components were identified in the essential oil from underground part of the plant and their main components were dill apiol, 35.26%-58.77%; myristicin, 7.55%-36.36% and 3,-terpinene, 11.0%- 26.01%. The concentrations of （E）-anethole, myristicin and γ-terpinene decreased as the PEG concentration rose, but limonene and dill apiol showed the opposite tendency. The correlation analysis showed that essential oil yield was positively correlated with fresh weight, dry weight, soluble sugar, protein, （E）-anethole, γ-terpinene and myristicin. There was also a significant positive correlation with the fresh weight of the whole plant. The essential oil yield was negatively correlated with the activities of SOD and POD, MDA content, limonene and dill apiol, but significantly negatively correlated with SOD and P

关 键 词：茴香 PEG模拟干旱 生长 精油 

分 类 号：S636[农业科学—蔬菜学] R931.5[农业科学—园艺学]