Effects of Ethephon on Flowering of Ornamental Pineapple in Guzmania

乙烯利对果子蔓属观赏凤梨开花效应的影响(英文)

[Objective] This study aimed to establish the technical system for forcing ornamental pineapple in Guzmania to flower and further provide technical parameters for large-scale cultivation.[Method] The effect of different concentrations of ethephon solution on flowering in Guzmania ornamental pineapple was studied by using randomized block design.[Results] All the different concentrations of ethephon solution were capable to force the four mainly-cultivated ornamental pineapple varieties to flower to varying degrees.After the flower forcing,it took about 180 d for the pineapple to stay in the ornamentation period,and there were no significant differences in inflorescence shape,inflorescence height,inflorescence diameter and bract number among different treatment pineapples.[Conclusion] All the four varieties have shown high sensitivity to ethephon.The optimal ethephon concentration is 400 mg/L for treating G.lingulata,G.remembrance and G.denise and 500 mg/L for treating G.conifera.After treatment,their major ornamentation traits are were able to satisfy the requirements for commercial production of pineapple.

[目的]建立果子蔓属(Guzmania)观赏凤梨的催花技术体系,为规模化栽培提供技术参数。[方法]采用随机区组试验设计,研究了不同浓度乙烯利溶液对果子蔓属凤梨开花效应的影响。[结果]不同浓度的乙烯利对4个主栽观赏凤梨品种均有不同程度的催花效果,催花处理后从反应期到观赏期约180 d,花序形状、花序高低、花序直径和着花苞片数在不同处理间差异不显著。[结论]4个品种均表现出对乙烯利的高度敏感,红星凤梨、黄苞果子蔓和丹尼斯最佳处理浓度为400 mg/L,圆锥擎天最佳处理浓度为500 mg/L,处理后其主要观赏性状满足凤梨商品化生产的要求。