新疆顶冰花属5种植物花粉微形态的比较

目的]对新疆顶冰花属植物中5种顶冰花的花粉微形态特征进行比较研究。方法]利用光学显微镜和扫描电子显微镜,测量并统计了5种顶冰花花粉的一些参数。结果]顶冰花属中5个种的花粉粒小,基本上呈椭圆体,形状较规则,具单槽(远极槽),边缘不整齐,两极开口,呈左右、上下对称,表面具网孔状纹饰、稀疏裂纹以及瘤状凸起纹饰等。结论]5种植物的花粉在这些孢粉学特征上均存在一定差异,具有重要的种间分类学意义。

Comparative Study on Pollen Micro-Morphology of 5 Gagea Species from Xinjiang

Objective] The comparative micro-morphology of the pollens of 5 species of Gagea from Xinjiang were investigated.Method] Some parameters of the pollens of five species were measured and counted under light microscope(LM) and scanning electron microscope(SEM).Result] Pollen grains of all 5 studied taxa were samll in size,regular oval in shape,zygomorphic,monocolpate,and with irregular margin.The exine ornamentation of pollen were reticulate,sparse cracked or tuberculate.Conclusion] There were differences to some extent among pollen of these 5 species and these differences had important meaning for the classification of Gagea.