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|Section2= |Section3= }} Leptospermone is a chemical compound (a β-triketone) produced by some members of the myrtle family (''Myrtaceae''), such as ''Callistemon citrinus'' (Lemon Bottlebrush), a shrub native to Australia, and ''Leptospermum scoparium'' (Manuka), a New Zealand tree from which it gets its name. Allelopathic studies have led to the commercialization of derivative compounds as HPPD inhibitor herbicides. ==History== Leptospermone was first identified in 1927 and was extracted from a variety of plants in 1965, 1966 and 1968. It was first identified as a chemical in ''Callistemon citrinus'' in California in 1977. A biologist at the Western Research Centre of Stauffer Chemical Company noticed that very few plants grew under ''Callistemon citrinus'' bushes. After taking soil samples and creating an array of extracts, one was identified as an herbicide. While it did have herbicidal effects, the rate required for sufficient coverage was too high to be of practical use. Leptospermone was optimized into thousands of compounds. Several were extremely effective but were too toxic, environmentally persistent or not selective enough. There are now several members of the triketone class of HPPD inhibitor herbicides on the market. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「leptospermone」の詳細全文を読む スポンサード リンク
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