【摘要】 以三年生中国水仙‘金盏银台’为材料,采用石蜡切片法观察其花芽形态分化过程。结果表明:中国水仙的花芽分化从7月上旬开始,到9月中旬形成雌蕊结束。其过程可分为叶芽时期、花序原基形成期、佛焰状总苞形成期、花原基形成期、花冠形成期、雄蕊形成期、雌蕊形成期7个时期。其中花冠形成期较长,20 d左右。花芽的外部形态变化上,分化后期芽的生长速度明显快于前期。对鳞茎球内花序数量的统计结果显示,高温储藏及烟熏法共同使用对中国水仙花序的形成具有很好的促进作用。更多还原

【Abstract】 Paraffin cutting method was used to observe the developing process of the flower bud differentiation of Narcissus tazetta var.chinensis ’JinZhanYinTai’ variety.The results showed that the flower bud differentiation process lasted about two months from bract primordia differentiation in early July to carpel primordia formation in mid-September.The process could be divided into 7 phases:leaf bud formation,inflorescence primordium differentiation phase,spathe primordia information phase,sepal differentiation phase,petal differentiation phase,stamen differentiation phase and pistil differentiation phase.The phase of petal differentiation was relatively long,about 20 days.In terms of changes in the external growth of flower bud,it grew much faster in the late stage than in the early stage of differentiation.Data showed that the number of inflorescence increased after the July in virtue of smoke and sustained high temperature.更多还原