@article{aees2021992,
author={{Sun, Chaofan and Zhao, Tianran and Wang, Xiaojing and Han, Kejie and Xie, Huicheng},
title={Fluorine Accumulation in Sunflower and Its Photosynthetic Response},
journal={Applied Ecology and Environmental Sciences},
volume={9},
number={9},
pages={795--799},
year={2021},
url={http://pubs.sciepub.com/aees/9/9/2},
issn={2328-3920},
abstract={In order to investigate the practicability to phytoremediation fluoride in wastewater by sunflower, experiment was carried out by hydroponic culture with oilseed type sunflower (<i>Helianthus annuus </i>L.) seedlings. The results indicated that fluorine concentrations in organs of sunflower were significantly increased with increasing solution concentrations and the content order of fluorine in sunflower organs was: roots> leaves> stems. The translocation factor was between 0.045-0.095, indicating that sunflower cannot effectively transport fluorine ions from the roots to the aerial part. The <i>P</i><SUB><i>n</i></SUB>, <i>G</i><SUB><i>s</i></SUB> and <i>T</i><SUB><i>r</i></SUB> of sunflower leaves decreased significantly with the increase of fluoride concentration. The <i>C</i><SUB><i>i</i></SUB> first decreased and then increased with the increase of fluoride concentration. Those results showed that the main reason for the decrease of <i>P</i><SUB><i>n</i></SUB> was the stomatal limitation when the F<SUP>-1</SUP><SUP> </SUP>concentration was between 0 and 20 mg L<SUP>-1</SUP>, and the non-stomatal limitation was the main reason for the decrease of <i>P</i><SUB><i>n</i></SUB> when the concentration of F<SUP>-1</SUP> was between 50 and 150 mg L<SUP>-1</SUP>. The maximum concentration of fluoride ions in which sunflower can endure was 87 mg L<SUP>-1</SUP>.},
doi={10.12691/aees-9-9-2}
publisher={Science and Education Publishing}
}