选择了 3种颜色的矮牵牛 (Petunia hybridaVilm) :粉红色、杂色和红色 ,将其开花过程分为 4个时期 :未出现花芽、花芽期、花蕾期和开花期 ,测定各时期MDA、可溶性糖、激素水平和多胺含量等指标的变化。结果表明 ,从无花芽期到开花期MDA含量有所升高 ;可溶性糖含量呈现降低的趋势。在粉红色的矮牵牛叶片中 ,IAA含量在开花期升高 ;GA含量在无花芽期和花芽期时较高 ;而ZRs则在花蕾期较低 ,在开花期时含量上升。 3种多胺含量的变化不同 ,腐胺在整个花期略有上升 ,精胺和亚精胺则略有下降。

The flowering process of Petunia hybrida Vilm was divided into four phases, namely, phase of nonoccurrence of flower buds, phase of flower buds, phase of occurrence of alabastrums and phase of flowering. The three kinds of flower colors ( pink color, variegated color and red color) were chosen . The contents of MDA, soluble sugar, stimulins and polyamine were compared in four phases. The results indicated that the content of MDA increased, and that of soluble sugar decreased from phase of non-occurrence of flower buds to phase of flowering. In the leaf blades of P .hybrida with the pink flowers, the content of IAA increased in phase of flowering, GA exhibited a high level from phase of non-occurrence of flower buds to phase of flower buds; while the ZRs rose in phase of flowering. The putrescine rose slightly, spermine and spermidine decreased slightly during whole flowering process.