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A Comparison of Physiological and Morphological Properties of Deciduous and Wintergreen Ferns in Southeastern Pennsylvania

机译:宾夕法尼亚州东南部落叶和冬青蕨的生理形态特征比较

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摘要

Physiological and morphological properties of a deciduous, perennial fern (Onoclea sensibilis) and three wintergreen, perennial ferns (Polystichum acrostichoides, Polypodiurn virginianum, and Dryopteris intermedia) were examined using leaf fluorescence, chlorophyll a:b ratios, total chlorophyll content, water potential, and leaf edge to surface area ratios. Onoclea sensibilis differed significantly from the wintergreen ferns in morphology and physiology for almost every parameter measured. Interspecific differences were also observed within the wintergreen group. Dryopteris intermedia differed most within the wintergreen group and showed more similarity in physiology to O. sensibilis. Dryopteris intermedia was found occupying the same high-light, higher soil moisture habitat as O. sensibilis, which may indicate that inherent leaf morphology, physiological characteristics, and a wintergreen or perennial life cycle, play important roles in determining habitat preference.
机译:使用叶片荧光,叶绿素a:b比率,总叶绿素含量,水势,叶片边缘与表面积之比。在几乎每个测量参数上,Onoclea sensibilis在形态和生理学上均与冬青蕨明显不同。在冬青组内也观察到种间差异。在冬青树组中,中间干鳞翅目之间的差异最大,并且在生理上与O. sensibilis相似。已发现中间鳞翅目高密度,高土壤水分栖息地与O. sensibilis相同,这可能表明固有的叶片形态,生理特征以及冬青或多年生生命周期在确定栖息地偏好方面起着重要作用。

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