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首页> 外文期刊>植物研究雑誌 >Anatomical Examination of Achlamydeous Female Flowers of Najas species (Hydrocharitaceae)
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Anatomical Examination of Achlamydeous Female Flowers of Najas species (Hydrocharitaceae)

机译：Najas物种患病患者雌性花的解剖学检查（羟基纤维）

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摘要

Previous research has suggested that the female flowers of the genus Najas might be epigynous with a rudimentary perianth, and that the epigyny was likely the only synapomorphy among the Hydrocharitaceae. In this study, we found three minute structures on the pistil of female flowers in two Najas species―an annular swelling, prickles and an extra lobe―as candidates for a rudimentary perianth, and investigated their developmental morphology to clarify their origin. The annular swelling observed in N. chinensis arose from part of the carpel wall, being formed by cells expanding from an inner layer of the style. The prickles ofN. chinensis appeared to be trichomes derived from the epidermis of the stigma and style. The lobe was apparently an extra stigmatic branch, which seemed to be aborted in the developmental stage in both TV. chinensis and N. minor. We conclude that the female flowers are completely achlamydeous without any rudimentary perianth. During the evolution of Najas, from Hydrocharitaceae species possessing synapomorphic epigynous flowers, the perianth might have been lost completely, resulting in the most reduced female flower consisting of just the pistil.
机译：以前的研究表明，Najas的女性花可能是具有巨大的平坦的表现，并且Epigyny可能是羟基纤维的唯一僵尸。在这项研究中，我们在两种Najas种类的雌花的雌蕊上发现了三分钟的结构 - 环形肿胀，刺痛和额外的叶片作为基本的花斑，并研究了他们的发育形态来澄清他们的起源。在N.Chinensis中观察到的环形肿胀从肉壁的一部分产生，通过从型号的内层扩张的细胞形成。刺耳。中国似乎是衍生自溶血和风格的表皮的毛粒。叶片显然是一个额外的耻辱分支，似乎在两个电视中的发育阶段中止。 Chinensis和N.未成年人。我们得出结论，女性花是完全取代的，没有任何基本的花斑。在Najas的演变中，来自具有突触突然卵形花的羟基纤维物种，Perianth可能已经完全丢失，导致由雌蕊组成的最减少的雌花。

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