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以龙葵(Solanum nigrum L.)为试材,利用石蜡切片技术,对龙葵花芽分化的过程进行了形态及解剖学观察。结果表明:龙葵幼苗出土后13d花芽分化开始进行,幼苗出土后48d花芽分化完成,整个花芽分化过程约需35d。花芽分化全过程共划分为花芽分化初期、萼片原基分化期、花瓣原基分化期、雌雄蕊原基分化期、子房与花药分化期和雌雄蕊成熟期6个时期。
Using Solanum nigrum L. as test material, the morphological and anatomical observation of flower bud differentiation of Solanum nigrum was conducted by using paraffin section technique. The results showed that the flower bud differentiation began 13 days after the seedlings were excavated. The flower bud differentiation was completed 48 days after the seedlings were excavated, and the entire flower bud differentiation process took about 35 days. The whole process of flower bud differentiation was divided into six stages: the early stage of flower bud differentiation, the sepal primordial differentiation stage, the petal primordium differentiation stage, the differentiation stage of pistil and stamen, the ovary and anther differentiation stage and the pistil and stamen maturation stage.