Piersol, John R., authorHanan, Joe J., advisorHolley, W. D., committee memberRoss, Cleon, committee member2023-01-272023-01-271974-06https://hdl.handle.net/10217/236089Covers not scanned.Carnation flowers are susceptible to damage when exposed to rather low ethylene dosages. This research confirmed that ethylene also affects the growth of the carnation plant. Severe growth reduction occurred when plants were treated continuously with 100 ppb, 300 ppb, and 500 ppb C2H4. Plants treated with the same concentrations for shorter periods showed less damage. Ethylene treatment at different growth stages produced varying plant responses. Plants treated during rapid growth stages (e.g. "rapid elongation" and "bud initiation") were more susceptible to ethylene than were plants treated at stages of relatively less rapid growth (e.g. after pinching and after planting). It was suggested that low ethylene levels for prolonged periods could result in serious growth reduction. Ethylene levels in most urban areas are high enough to warrant concern by growers in such areas. Ambient ethylene levels in the Denver Metropolitan area may cause more stem shortening than was previously thought. A grower should consider ambient C2H4 levels before locating his range in an urban area.masters thesesengCopyright and other restrictions may apply. User is responsible for compliance with all applicable laws. For information about copyright law, please see https://libguides.colostate.edu/copyright.CarnationsPlants -- Effect of ethylene onText