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- Title
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.
- Authors
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
- Abstract
【Objective】The purpose of this study was to explore the main path ways of polycyclic aromatic hydrocarbons( 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. parachinensis in leaf smear and root hydroponic treatments. Then PAHs content,yield and nutritional quality of B. parachinensis under different treatments were compared.【Result】Three days after smearing the leaf of B. parachinensis with PAHs,the results 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 process, 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 process, 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
- Publication
Journal of Southern Agriculture, 2018, Vol 49, Issue 6, p1202
- ISSN
2095-1191
- Publication type
Article
- DOI
10.3969/j.issn.2095-1191.2018.06.23