Abstract: Provided are a method of preparing, and use of 1-(2,2-dimethylpropyl)-cyclopropene as an ethylene antagonist that can be formulated as an aqueous emulsion and applicable to plants through immersion or spraying. It was confirmed that the compound can be reliably synthesized and stored by the preparation method disclosed herein, and it was also confirmed that the compound can effectively inhibit ethylene action when formulated as an aqueous emulsion and treated to a plant by immersion or spray treatment; hence, the compound may be used as an ethylene antagonist on plants, as a pre-harvest or post-harvest plant growth regulator, or as a freshness keeping agent.

Abstract: The present invention relates to a marker composition for diagnosing resistance to bacterial blight of soybean; a composition for diagnosing resistance to bacterial blight of soybean, comprising a primer which specifically binds to a marker gene; a diagnostic kit for diagnosing resistance to bacterial blight of soybean, comprising the composition; and a method for diagnosing resistance to bacterial blight of soybean. As described above, with the use of the marker gene for diagnosing resistance to bacterial blight of soybean according to the present invention, it is possible to breed varieties that are resistant to bacterial blight of soybean, thus providing disease-resistant and high-quality, superior varieties.