南方农业学报2018，Vol.49Issue(6)：1202-1207,6.DOI:10.3969/j.issn.2095-1191.2018.06.23
多环芳烃进入菜心体内的途径及其对菜心产量和品质的影响
Pathway of PAHs entering Brassica parachinensis and its effects on yield and quality of B. parachinensis
摘要
Abstract
[Objective]The purpose of this study was to explore the main path ways of polycyclic aromatic hydrocar-bons(PAHs)entering into Brassica parachinensis and provide reference for improving its yield,quality and production safety.[Method]At harvest stage,experiment was carried out through applying five kinds of PAHs on the B. parachinen-sis in leaf smear and root hydroponic treatments. Then PAHs content,yield and nutritional quality of B. parachinensis un-der different treatments were compared.[Result]Three days after smearing the leaf of B. parachinensis with PAHs,the re-sults showed that the content of PAHs was 127.28 μg/kgDW,which was significantly higher than that of root hydroponic treatment(13.63 μg/kgDW)(P<0.05,the same below). PAHs mainly entered B. parachinensis through its leaf. In this pro-cess,the absorption of five different kinds of PAHs by the B. parachinensis were as follows:NAP>PHE>FLT>BaA>BaP. After leaf smear treatment,the single plant fresh weight was 44.94 g and soluble sugar content 175.67 μg/g,which were both significantly higher than the root of hydroponic treatment group and control group. The contents of vitamin C(Vc) and soluble protein were the highest in the root hydroponics treatment,with 21.24 mg/100 gFW and 10.76 μg/g respectively, which were significantly higher than those of the leaf smear treatment and control groups. The cellulose content in root hydroponics treatment group was the highest(10.26%),significantly higher than that in the control group. Both PAHs treatments had no significant effects on the chlorophyll content of B. parachinensis(P>0.05). The results of correlation analysis showed that the content of PAHs in B. parachinensis was positively correlated with single plant weight,soluble sugar content,soluble protein content and cellulose content,but negatively correlated with Vc content.[Conclusion]The capacity to absorb PAHs of leaf of B. parachinensis is much stronger than the root. Therefore,during the production pro-cess,the vegetable field should be far away from roads and factories in order to prevent PAHs in exhaust gas,dust and smoke from entering B. parachinensis body through leaves,thus affecting the quality and safety of B. parachinensis.关键词
菜心/多环芳烃(PAHs)/叶面涂抹/根部水培/品质/质量安全Key words
Brassica parachinensis/polycyclic aromatic hydrocarbons(PAHs)/leaf smear/root hydroponic/quali-ty/quality and safety分类
农业科技引用本文复制引用
乔双雨,巫桂芬,龙明华,梁勇生,申海燕,唐璇,李朋欣,张会敏,赵体跃..多环芳烃进入菜心体内的途径及其对菜心产量和品质的影响[J].南方农业学报,2018,49(6):1202-1207,6.基金项目
国家自然科学基金项目(31360479) （31360479）
广西自然科学基金项目(2014GXNSFAA118100) （2014GXNSFAA118100）
国家现代农业产业技术体系广西蔬菜瓜果创新团队建设项目(nycytxgxcxtd-10-03) （nycytxgxcxtd-10-03）
