Abstract
This chapter summarizes studies that have provided much insight into the role of ethylene in flower induction, flower development, and flower senescence. Ethylene-mediated induction of flowering is also utilized in the commercial production of mangos. Ethylene treatment resulted in a rapid increase in size and growth rate of the meristematic dome of dormant brodiaea corms. The natural role of ethylene in sex expression has been investigated by treating plants with inhibitors of ethylene production or action. The early onset of ethylene synthesis during senescence of carnations and the retardation of senescence by inhibitors of ethylene biosynthesis indicate the importance of ethylene in regulation of the process. Treatment of Tradescantia or Ipomoea tissues with aminoethoxyvinylglycine (AVG) greatly reduced ethylene production but only partially delayed symptoms of senescence. Related to the question of the influence of the ovary on petal senescence are a number of studies on source-sink relationships during carnation flower senescence.
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