Physiological and Growth Characteristics of Tomato Seedlings in Response to Low Root-zone Temperature

Root-zone temperature (RZT) is an indispensable environmental factor for the proper growth and development of plants. Low RZT one major limitations agricultural production during cold seasons. In this study, physiological responses tomato seedlings to low stress (10 °C) its recovery were investigated with hydroponic cultivation in artificial climate-controlled chamber. The reaction was evaluated by combining various indexes, including photosynthesis, chlorophyll fluorescence, root activity, hydrogen peroxide, antioxidants. results showed that adversely affected response limited root-source water mineral elements, supply shoot metabolism, leaf fluorescence negatively influenced, which led inhibited area biomass accumulation. Hydrogen peroxide (H 2 O ), malondialdehyde (MDA), proline accumulated time stress. When restored normal (∼20 °C), parameters recovered a certain degree, although most not at similar level control. crop seasons, it necessary improve achieve high quality yield production.