中国蕨类植物孢子形态的研究ⅩⅣ.卷柏科
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上海市教育委员会重点学科建设项目(J50401);上海师范大学校理科科研基金(SK201231)


Spore Morphology of Pteridophytes from China ⅩⅣ.Selaginellaceae
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    摘要:

    利用扫描电镜对中国产卷柏科25种植物孢子形态进行了观察。结果显示:(1)卷柏科植物大孢子为球状四面体,辐射对称;具三裂缝,裂缝为孢子半径的1/2~3/4;极面观一般为三角圆形或近圆形,赤道面观为近圆形、近扇形或近椭圆形;极轴长为158~548 μm,赤道轴长为196~675 μm。(2)小孢子为球状四面体,辐射对称;具三裂缝,裂缝为孢子半径的1/2~3/4或几达赤道线;极面观一般为近圆形或三角圆形,赤道面观为近圆形或近扇形;极轴长为10~40 μm,赤道轴长为17~63 μm。(3)孢子表面具颗粒状、瘤状、疣状、刺状、棒状、网状、片状、疣块状和脑状纹饰。研究认为,孢子形态特征可以作为该科亚属及种的分类学依据。

    Abstract:

    The morphology of spores of 25 species of Selaginellaceae from China was examined using scanning electron microscope (SEM).The results show that:(1)The megaspores are tetrahedral-globose,with a trilete,each of which has a length of about 1/2~3/4 of the spore radius.The megaspores are often rounded triangular or suborbicular in polar view,and suborbicular,fan-shaped or nearly elliptic in equatorial view.The length of polar axis is about 158~548 μm.The length of equatorial axis is about 196~675 μm.(2)The microspores are also tetrahedral-globose,with a trilete,each of which has a length of about 1/2~3/4 of the spore radius or almost equal to radius of the spores.The microspores are always suborbicular or rounded triangular in polar view,and suborbicular,nearly fan-shaped in equatorial view.The length of polar axis is about 10~40 μm.The length of equatorial axis is about 17~63 μm.(3)The ornamentation of the spores includes granulate,tuberculate,verrucate,spinate,baculate,reticulate,lamellate,verrucate-rugulate,and cerebriod.The spore morphology characteristics can be used as the criterions for the classification of subgenus and species of Selaginellaceae.

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夏 漪,戴锡玲,严岳鸿,等.中国蕨类植物孢子形态的研究ⅩⅣ.卷柏科[J].西北植物学报,2013,33(8):1595-1604

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  • 在线发布日期: 2013-08-27
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