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首页> 外文期刊>Ботанический журнал >Differentiation of dicyclic stele in Pteridium aquilinum (Dennstaedtiaceae).
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Differentiation of dicyclic stele in Pteridium aquilinum (Dennstaedtiaceae).

机译：蕨类植物（DennstaedtiaCeae）中双环状石英的分化。

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摘要

The differentiation of Pteridium aquilinum dicyclic stele was studied. The apical meristem had a typical zonal structure and was protected by a ridge in which vascular tissues were differentiated. The identical orientation of vascular bands in the ridge and petiole in the shape of an omega confirmed that the ridge was the embryonic leaf. The outer ring of the rhizome vascular system was formed by bundles of leaf traces. Two central meristeles separated by two gaps corresponded to the dictyostele. In the rhizome apex, the leaf traces contacted both the meristeles of the dictyostele and the leaf trace of the older leaf. In the mature rhizome these contacts between the outer ring of the meristeles led to a variation in the number of meristeles and parenchymatous gaps between them, which were confined to the nodal zone. As a result, perforations appeared. Meristeles of the outer and inner rings came into contact close to the nodal zone.
机译：研究了蕨类植物双环斯莱尔的分化。 顶端单位具有典型的区间结构，并受脊柱组织的脊来保护。 芦苇和叶柄形状的血管条带的相同取向证实了脊是胚胎叶。 根茎血管系统的外环由叶痕迹形成。 两个间隙分开的两个中央成交用对应于Dictyostele。 在根茎顶点中，叶片迹线与较旧叶子的叶柄和叶迹线联系过。 在成熟的根茎中，这些元素的外环之间的触点导致了它们之间的成分数和副畸形间隙的变化，这些间隙被限制在节点区域。 结果，出现了穿孔。 外圈和内圈的成交位于接近节点区域接触。

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