极地研究

极地研究 ›› 1998, Vol. 10 ›› Issue (4): 73-75.

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南极菲尔德斯半岛四种藓类孢子形态观察

杜桂森;李学东;刘家熙;汪洪杰   

  • 出版日期:1998-12-30 发布日期:1998-12-30

OBSERVATIONS ON THE SPORE MORPHOLOGY OF FOUR SPECIES MOSSES FROM FILDES PENINSULA,ANTARCTICA

  • Online:1998-12-30 Published:1998-12-30

PDF (PC)

1252

被引次数

1

摘要：

通过光学显微镜和扫描电镜观察了南极菲尔德斯半岛四种藓类孢子的形态特征，四种孢子体积较小，直径为８．４～３２．９μｍ，Ｐ／Ｅ值为０．８２５～０．９０６，孢子色泽为淡黄色、黄色或黄褐色，萌发孔均为近极薄壁区类型，外壁纹饰为鼓槌状、棒状或瘤状。

关键词: 南极,菲尔德斯半岛,藓类孢子,形态特征

Abstract:

The spore morphology of 4 species of mosses from Fildes Peninsula ,Antarctica are observed by light microscopy and scanning electron microscopy. They are Encalypta patagonia Broth. , Schistidium hyalino cuspitatum B.G.Bell., S.rivulare (Brid.)Podp. and Bartramia Patens Brid. Spore size ranging from 8.4-32.9μm in diameter.P/E ranges from 0.825-0.906.Colour of the mature spore varies from light yellow to yellow brown.Germinal aperture belongs to katalept type.Exine ornamentation are pilate,baculate or tuberculate. The spores of two species ( Bartramia patens collected in Fildes Peninsula and B.pomiformis collected in Hebei,China) are similar in diameter,shape and aperture. But they are different in spore colour and exine ornamentation. It shows character differentiation between two species in Bartramia.