Sekisui Chemical Co., Ltd.

Seigo Ono

Koichiro Iwasa

Setsuo Nakajima

Makoto Fujigami

Toshimasa Takeuchi

The present invention provides a screening method for selecting plant symbiotic microorganisms enabling plant growth under abiotic stress and/or biotic stress, a microbial mixture of microorganisms which are selected from nature by the method and enables a plant to grow under salinity stress and/or hyperosmotic stress in symbiosis with the plant. Specifically, the present invention provides a screening method for selecting plant symbiotic microorganisms, comprising a first screening step of allowing at least one plant to grow for a predetermined period of time while being partially soaked in a solution containing a microbial mixture under abiotic stress and/or biotic stress, and collecting microorganisms adhering to grown plant to thereby select out the microorganisms as plant symbiotic microorganisms enabling plant growth under the stress.

Method for selecting plant symbiotic microbes, and microbial mixture

A hydroponic system () using seawater, wherein seawater (W) is used for hydroponic cultivation of salt-tolerant plants, including a water supply pump () that pumps up, from the sea (S), seawater (W) having a salinity, a bacteria content and an unwanted matter content are less than or equal to predetermined threshold values; a water tub () that stores seawater (W) pumped up by the water supply pump () and accommodates salt-tolerant plants (P) to be cultivated; and a filter () that removes bacteria and unwanted matter from the seawater (W) obtained from the sea (S); wherein the seawater (W) from which the bacteria and the unwanted matter have been removed by the filter () is fed to the water tub ().

Hydroponic system using seawater and cultivation system for growing seeds and seedlings

The present invention provides a plant cultivation method, which enables plant cultivation under high salinity environment for a long time. A method for hydroponic plant cultivation under high salinity environment, comprising a cultivation step of hydroponically growing a plant with a cultivation solution having a sodium chloride concentration of 1% by mass or more, during which a salt resistance imparting treatment is performed at least once by bringing a salt tolerance imparting agent into contact with at least a part of a root of the plant, thereby maintaining salt tolerance of the plant.

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Tsukuba, Japan

Seigo Ono