1-methylcyclopropene
...that 1-methylcyclopropene, a synthetic plant hormone, is used to keep produce from ripening prematurely and to keep cut flowers from wilting?
...that <b id="mwEbM"><a href="./1-Methylcyclopropene" id="mwEbQ" rel="mw:WikiLink" title="1-Methylcyclopropene">1-methylcyclopropene</a></b>, a synthetic <a href="./Plant_hormone" id="mwEbU" rel="mw:WikiLink" title="Plant hormone">plant hormone</a>, is used to keep produce from ripening prematurely and to keep cut flowers from <a href="./Wilting" id="mwEbY" rel="mw:WikiLink" title="Wilting">wilting</a>?