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植物生長調節劑在番荔枝屬（Annona）栽培上之應用
Effect of Plant Growth Regulators on Annona Culture
摘要
番荔枝屬（Annona）具雌蕊先熟性；於雌花期，柱頭有授粉能力時，花藥尚未裂開；而達雄花期時，花粉成熟，然柱頭已失去受粉能力。在雄花期之前發現乙烯量增加，而花的組織器官中以花藥部位之乙烯產生量較花瓣及其他生殖器官為多；應用生長素以產生乙烯，可提早雄花期之開始；相反的，減壓使內生乙烯生產緩慢，延遲雄花期之開始。氣候環境因素影響花粉之稔性與發芽，增加空氣中濕度及氣溫暖和之氣候適合花粉之發芽，利於授粉與著果。節肢動物之數種甲蟲，於開花期協助授粉，提高著果率。植物生長調節劑如GA3、NAA、BA......等，以25～250 ppm之濃度，每隔兩過重複噴施於果實，可誘導著果，其中以GA3處理效果良好，鮮食品質尚佳，並可產生沒有種子的果實，利於鮮食與加工；唯果型較小，有待進一步研究改進。
並列摘要
Annona is protogym that the stigma mature earlier than anther, which means the stigma lose its receptability when the anther mature.It showed that the ethylene increased before anther dehiscence. The anther produce more ethylene than petal and other reproductive organs in flower tissues.Auxin application may induce ethylene that promote male stage. However, hypobaric pressure may retard endogenous ethylene production and delay the male flower induction.The climate factors such as humidity and temperature may affect the germination and viability of the pollens. High humidity and temperature improve germinability which enhances fruit set.Plant hormones such as GA3, NAA applied biweekly at 25-250 ppm promote fruit set. GA3 spray produced better result in fruit setting, higher fruit quality and seedless fruit which is good for fresh consumption and processing, but causing smaller fruit. Further studies of growth regulators on Annona are required.