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Bulletin of Botanical Research ›› 2000, Vol. 20 ›› Issue (3): 300-303.

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POLLEN SUBMICROSCOPIC MORPHOLOGY OF ELEUTHEROCOCCUS SENTICOSUS AND E. SESSILIFLORUS (ARALIACEAE)

LIU Lin-de1,3, ZHANG Ping1, SUN Jing-tian2, ZHU Ning3   

  1. 1. Department of Bioscience and Biotechnology, Yantai Normal University, Yantai 264025, P. R. China;
    2. Analysis and Testing Center, Shandong Normal University, Jinan 250014, P. R. China;
    3. Northeast Forestry University, Harbin 150040, P. R. China
  • Received:1999-07-29 Online:2000-09-15 Published:2016-06-14

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Abstract: The pollen submicroscopic morphology of Eleutherococcus senticosus and E. sessiliflorus was examined with scanning electron microscope (SEM). The pollen grains of the two species are round in equatorial view, 3-labed-rounded in polar view and 3-colporate. The pollen exine ornamentation of E. sessiliflorus and that of male E. senticosus is with reticulate; the exine ornamentation of bisexual E. senticosus pollens is also with reticulate but the murns of some pollens are discontinued. The polar axis×equatorial axis of pollen grains of E. sessiliflorus is 26.5μm×27.4μm; and that of male E. senticosus pollen grains is 21.1μm×22.1μm; that of bisexual E. senticosus pollen grains is about 21.6μm×23.9μm. The characteristics of pollen submicroscopic morphology of the two species supports the traditional taxonomy for the genus and the species level; and the distinguishing features of some bisexual E. senticosus pollens may be related to their irregular development.

Key words: Eleutherococcus senticosus, Eleutherococcus sessiliflorus, pollen, submicroscopic morphology, scanning electron microscopy