杜鹃花属映山红的解剖学研究及其系统学意义

方法:应用扫描电镜和光镜对映山红的花瓣、花鳞片以及叶片的形态特征及解剖特征进行了观测。结果:在扫描电镜下观测到花瓣、花鳞片的远轴面有气孔器的分布,这同叶片上的气孔器仅分布于远轴面相一致,气孔类型没有明显不同;表皮毛分布于花鳞片的远轴面和叶片的近、远轴面,花瓣底部有观测到表皮毛的存在;映山红花瓣表皮细胞垂周壁式样与叶片的相比存在差异:花瓣为浅波状或近平直,叶片为浅波状至深波状,细胞形状不规则。结论:通过对映山红形态及解剖结构的观测,可为映山红在杜鹃花属分类位置及系统演化上提供证据和参考资料。

Study on Anatomy of Rhododendron simsii Planch. and Its Systematic Implication

METHODS:By means of scanning microscope and light micaroscope,observations were made for studying the morphological and anatomical features of petal,flower scales and leaves of Rhododendron simsii Planch..RESULTS:According to observation by scanning electron microscope,stomatal apparatus are found dis- tributed in abaxial faces of petal and flower scales,which is compatible with the fact that stomatal apparatus are only distributed in abaxial faces,with distinctive varation in types of stoma;epidermal hair is observed distribut- ed in abaxial faces of flower scales,and abaxial and adaxial faces of leaves,and also hair found in the whole bottom of petal;in contrast with leaves,a certain varation is found existed in anticlinal wall pattern of epidermic cell of rhododendron simsii planch.,petal slightly undulated or approximately fiat,leaves slightly undulated to deeply undulated,cellular shape irregular.CONCLUSION:These findings can be used as evidence and reference on taxonomic category and phylogeny of rhododendron simsii planch,among rhododendron.