MCP shortens Peony vase life.
Hoffman, Gregory D., D. Scott Mattinson and John K. Fellman
Program and Abstract. 9th Controlled Atmosphere Research Conference (CA2005). Michigan State University, East Lansing, Michigan, USA. July 5-10, 2005. page12
2005
บทคัดย่อ
Ethylene action and synthesis inhibitors were evaluated for their effects on cut peony flowers. Field-grown ‘Karl Rosenfield’ and ‘Sarah Bernhardt’ cut peony flowers were treated for two hours with either 0.5 mM silver thiosulfate (STS) or 0.60 ml 1-1 1-mithycyclopropene (1-MCP) ethylene action inhibitors, Floralifeâ (FLO) at the lable recommended dosage, 0.60 ml 1-1 ethylene (Eth), or deionized water (CON) before being stored for nine weeks. After this storage treaiment, flower longevity and quality were evaluated. In addition, ‘Sarah Bernhardt’ cut peony flowers temporarily held for three weeks in refrigerated storage were treated for two hours with either 100 ml 1-1 aminoethoxyvinylglycine (AVG), an ethylene synthesis inhibitor, or dejonized water and monitored for an additional seven week storage period. Vase life, flower weight, bud diameter, degree of petal openness, petal color, rate of ethylene and carbon dioxide (CO2) evolution, and percent disease incidence were monitored. ‘Karl Rosenfield’ flowers were unaffected by all treatments over the storage time. ‘Sarah Bernhardt’ flowers responded to STS and 1-MCP treatments during CO2 evolution, petal color, and percent disease incidence measurements. ‘Sarah Bernhardt’ flowers treated with AVG had slowed reproductive organ development and increased disease incidence. The Floralifeâ treatment promoted the longest vase life in ‘Sarah Bernhardt’ flowers, whereas 1-MCP-treated flowers had the shortest vase life. ‘Sarah Bernhardt’ flowers treated with STS were lighter and less vivid in color, whereas FLO-treated flowers had darker and more vivid petal color. AVG had little to no effect flower quality of vase life, with the exception of delayed flower development and increased disease incidence. The decline of vase life and flower quality was significantly related to the length storage time. The ethylene antagonists used in this study were ineffective at increasing storage longevity and quality of cut ‘Karl Rosenfield’ and ‘Sarah Bernhardt’ peony flowers.