Editing Quaternary ammonium cation (section)

===Plant growth retardants===
[[Chlormequat|Cycocel]] (chlormequat chloride) reduces plant height by inhibiting the production of [[gibberellin]]s, the primary plant hormones responsible for cell elongation. Therefore, their effects are primarily on stem, petiole, and flower stalk tissues. Lesser effects are seen in reductions of leaf expansion, resulting in thicker leaves with darker green color.<ref>{{cite web|url=http://users.in.gr/dimpet/thesis/growth_retardants.htm |title=Growth Retardants |access-date=July 19, 2012 |url-status=dead |archive-url=https://web.archive.org/web/20110925004831/http://users.in.gr/dimpet/thesis/growth_retardants.htm |archive-date=September 25, 2011 }} Wageningen Agricultural University, The Netherlands</ref>