A systematic study of East Asian vittarioid ferns (Pteridaceae: Vittarioideae)
نویسندگان
چکیده
منابع مشابه
A revised generic classification of vittarioid ferns (Pteridaceae) based on molecular, micromorphological, and geographic data
In ferns, as in most branches of the tree of life, phylogenetic analyses of molecular data have greatly improved our ability to identify natural groupings that are subsequently reflected in classifications grounded in the principle of monophyly (Smith & al., 2006; Rothfels & al., 2012; Christenhusz & Chase, 2014). In some cases, the results of such analyses are consistent with earlier notions o...
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Across the tree of life, molecular phylogenetic studies often reveal surprising relationships between taxa with radically different morphologies that have long obscured their close affiliations. A spectacular botanical example is Rafflesia, a holoparasite that produces the largest flowers in the world, but that evolved from tiny-flowered ancestors within the Euphorbiaceae. Outside of parasitic ...
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PREMISE OF THE STUDY Not all ferns grow in moist, shaded habitats; some lineages thrive in exposed, seasonally dry environments. Notholaenids are a clade of xeric-adapted ferns commonly characterized by the presence of a waxy exudate, called farina, on the undersides of their leaves. Although some other lineages of cheilanthoid ferns also have farinose sporophytes, previous studies suggested th...
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Molecular evolutionary rate heterogeneity-the violation of a molecular clock-is a prominent feature of many phylogenetic data sets. It has particular importance to systematists not only because of its biological implications, but also for its practical effects on our ability to infer and date evolutionary events. Here we show, using both maximum likelihood and Bayesian approaches, that a remark...
متن کاملApplying DNA Barcodes to Identify Closely Related Species of Ferns: A Case Study of the Chinese Adiantum (Pteridaceae)
DNA barcoding is a fast-developing technique to identify species by using short and standard DNA sequences. Universal selection of DNA barcodes in ferns remains unresolved. In this study, five plastid regions (rbcL, matK, trnH-psbA, trnL-F and rps4-trnS) and eight nuclear regions (ITS, pgiC, gapC, LEAFY, ITS2, IBR3_2, DET1, and SQD1_1) were screened and evaluated in the fern genus Adiantum from...
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ژورنال
عنوان ژورنال: Botanical Journal of the Linnean Society
سال: 2017
ISSN: 0024-4074,1095-8339
DOI: 10.1093/botlinnean/box001