| 摘要 |
PURPOSE:A plant growth regulator usable for various crops without causing phytotoxicity, showing extremely improved effects on growth of rooting and promotion of rapid growth in blooming season and in time of harvesting, comprising a specific itaconic acid derivative as an active ingredient. CONSTITUTION:A plant growth regulator containing a compound selected from a group consisting of an alkylitaconic acid containing 1-8C (except 6C) alkyl group at a side chain, 1-5C alkyl monoester thereof, exo-methylene of itaconic acid containing 1-8C alkyl group at the side chain and 1-5C alkyl ester thereof as an active ingredient. The compound such as (+ or -)-ethylitaconic acid is obtained from 2-propene-1,1,2-triethyltricarboxylate as a starting substance by a reaction according to the reaction formula.
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