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首页> 外文期刊>Ботанический журнал >Morphology of female reproductive structures and an attempt of the construction of phylogenetic system of orders Podocarpales, Cephalotaxales and Taxales
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Morphology of female reproductive structures and an attempt of the construction of phylogenetic system of orders Podocarpales, Cephalotaxales and Taxales

机译：女性生殖结构的形态及秩序植物，头孢甲术和纳税人系统的构建

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摘要

Morphological and anatomical features of the female reproductive organs in the orders Podocarpales, Cephalotaxales and Taxales are very diverse. The seeds of podocarps, cephalotaxads and taxads are either solitary, terminal on the ordinary of specialized shoots, or aggregated in a primitive oligospermous strobilit. There are five different types of seeds: bitegmal (anatropous and orthotropous), unitegmal epimatous anatropous, unitegmal arillous (anatropous, orthotropous and hemiorthotropous), unitegmal anatropous with a sarcotesta but lacking supraintegumental envelopes and unitegmal orthotropous without supraintegumental envelopes. There appear to be no relations of the investigated taxa to Cordaitanthales, Lebachiales, Araucariales s.l., Pinales s.str. and Taxodiales s.l. It is possible to retrace relations of the Pteridospermae. Accordingly taxonomical segregation of studied groups of gymnosperms from is necessary. We find it reasonable to consider these orders as a separate class of seed plants based on the fundamental characters of their female reproductive structures (the number of integuments, the presence and nature of the supraintegumental envelope and seed orientation).
机译：序命令Podocarpales中女性生殖器官的形态和解剖特征是非常多样化的。 Podocarps，头孢星和速度的种子是孤独的，终端在普通的专业芽上，或聚集在原始的低聚体斯特罗茨。有五种不同类型的种子：Bitegmal（赤散和正反疏散），unitegmal剥离性粘性，Unitegmal芳级（脱脱，正交和过度脱发），unitegmal anatropous与sarcotesta，但缺乏上凌耶特的信封，没有上升性信封的正交性。似乎没有对Cortaitanthales，Lebachiales，Araucariales S.L.，Pinales S.Str的关系。和税前S.L.可以追溯翼状胬肉的关系。因此，需要从研究裸子植物组的分类学分离。我们发现这一订单作为基于其女性生殖结构的基本特征的单独种子植物（内容的数量，超级特征包络和种子取向的性质）是合理的。

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