Elevated Root-Zone Temperature Modulates Growth and Quality of Hydroponically Grown Carrots
Elevated Root-Zone Temperature Modulates Growth and Quality of Hydroponically Grown Carrots作者机构：Department of Biological Science Faculty of Biology Oriented Science and Technology Kindai University Wakayama Japan
出 版 物：《Agricultural Sciences》 (农业科学（英文）)
年 卷 期：2015年第6卷第8期
页 面：749-757页
学科分类：1002[医学-临床医学] 100214[医学-肿瘤学] 10[医学]
主 题：Carrot Root-Zone Temperature Hydroponics Phenolic Compounds Drought Stress
摘 要：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.
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