%0 Journal Article
%T Elevated Root-Zone Temperature Modulates Growth and Quality of Hydroponically Grown Carrots
%A Masaru Sakamoto
%A Takahiro Suzuki
%J Agricultural Sciences
%P 749-757
%@ 2156-8561
%D 2015
%I Scientific Research Publishing
%R 10.4236/as.2015.68072
%X Air and soil temperatures strongly influence the growth and quality of crops. However, in root vegetables, such as carrot, few experiments aimed at regulating growth and quality by manipulating root-zone temperature have been reported. We investigated the effect of root-zone temperatures (20°C, 25°C, 29°C, and 33°C) on carrot growth and components using a hydroponic system. High root-zone temperatures for 14 days reduced shoot and rootgrowth and water content. In contrast, total phenolic compounds and soluble-solid content increased in tap roots under high-temperature treatment. Root oxygen consumption was upregulated after 7 days under high-temperature treatment. These results suggest that high root-zone temperatures induce drought-like stress responses that modulate carrot biomass and components. High root-zone temperature treatments administered to hydroponically grown crops may be a valuable tool for improving and increasing the quality and value of crops.
%K Carrot
%K Root-Zone Temperature
%K Hydroponics
%K Phenolic Compounds
%K Drought Stress
%U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=58611