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YANG Gui-Fang, LIU Yong, XU Feng-Xia. Pollen Morphology of Melodorum fruticosum Lour.[J]. Plant Science Journal, 2013, 31(5): 439-444. DOI: 10.3724/SP.J.1142.2013.50439
Citation: YANG Gui-Fang, LIU Yong, XU Feng-Xia. Pollen Morphology of Melodorum fruticosum Lour.[J]. Plant Science Journal, 2013, 31(5): 439-444. DOI: 10.3724/SP.J.1142.2013.50439
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Pollen Morphology of Melodorum fruticosum Lour.

  • 1.

    Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China

  • 2. Hunan Provincial Key Laboratory of Crop Germplasm Innovation and Utilization and National Chinese Medicinal Herbs (Hunan) Technology Center, Hunan Agricultural University, Changsha 410128, China

  • 3. Herbal Extract Engineering Research Center (HerbEx), Changsha 410331, China

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  • Received Date: April 27, 2013
  • Revised Date: June 24, 2013
  • Published Date: October 29, 2013
    Graphical Abstract
    • Abstract
  • The morphology and ultrastructure of pollen grains of Melodorum fruticosum Lour. are described based on observations using a scanning electron microscope (SEM) and transmission electron microscope (TEM). Pollen grains of M. fruticosum were globose or oblate shape,with no visible aperture or any indication of a pole,and the ornamentation was rugulate. The pollen wall was composed of an outer exine and an inner intine layer. The exine consisted of three distinct layers：tectum,infratectum and foot layer. The tectum was continuous and uniformly thickened. The infratectum was mixed with granules and columellae,and nearly one half of the total exine in thickness. The foot layer was composed of undulating foliations. The endexine was homogeneous and lamellated. The intine was two-layered,and varied from two to one half times the exine in thickness. Except for the especially thickened infratectum and foot layer foliations without white line in M. fruticosum,the pollen characters were similar to those of Uvarieae. Moreover,data on the relationship of aperture types,variations of sporoderm thickness and evolution of tectum in Annonaceae were determined and discussed.
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    • References (32)
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