9
views
0
recommends
+1 Recommend
1 collections
    0
    shares
      • Record: found
      • Abstract: found
      • Article: found
      Is Open Access

      Descripción del desarrollo morfogénico de los prótalos y esporófitos jovenes de Pteris quadriaurita retz. (Pteridaceae-polypodiidae) en tres soportes naturales Translated title: Morphogenic description of the development of the prothalus and the young sporophyte from Pteris quadriaurita retz. (pteridaceae-polypodiidae) in three natural substrates

      research-article

      Read this article at

      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          RESUMEN: Se describe el desarrollo del prótalo y del esporófito joven de Pteris quadriaurita Retz. Los especímenes fueron recolectados en un bosque mesófilo de montaña en Tototla, municipio de Xochicoatlán, estado de Hidalgo, México. Las esporas fueron sembradas en frascos de vidrio de 125 ml con cerámica (barro molido), piedra de río, tela de mosquitero y tres soportes de cultivo (tierra, maquique y musgo), todo previamente esterilizado y cerrado con plástico y alambre de cobre. El ciclo fue isospórico con desarrollo del prótalo tipo Ceratopteris. Los gametófitos fueron unisexuados masculinos, unisexuados femeninos y pocos bisexuados. Los esporófitos apogámicos se obtuvieron a los 231 días en musgo y maquique, mientras que en tierra de hoja no se formaron.

          Translated abstract

          ABSTRACT: The development of the prothalus and the young sporophyte of Pteris quadriaurita Retz. are described. Studied material was collected in a cloud forest in Tototla, Xochicoatlán municipality, State of Hidalgo, México. The spores were sown in glass vessel of 125 ml prepared in the following manner: the glasses were layered with ceramic, river stone, mosquito net and three natural substrates (plant litter, maquique and moss) all previously sterilized and enclosed in plastic bag tied with copper wire. The cycle proved to be isosporeus with prothallial development corresponding to the Ceratopteris type. The gametophytes were only male, only female and few hermaphrodites. Young sporophytes were apogamous obtained around 231 days after sowing in moss and maquique, in plant litter, they were nor development.

          Related collections

          Most cited references28

          • Record: found
          • Abstract: found
          • Article: found
          Is Open Access

          Polyploidy and Speciation inPteris(Pteridaceae)

          The highest frequency of polyploidy among plants is considered to occur in the Pteridophytes. In this study, we focused on polyploidy displayed by a specific fern taxon, the genus Pteris L. (Pteridaceae), comprising over 250 species. Cytological data from 106 Pteris species were reviewed. The base number of chromosomes in Pteris is 29. Polyploids are frequently found in Pteris , including triploids, tetraploids, pentaploids, hexaploids, and octoploids. In addition, an aneuploid species, P. deltodon Bak., has been recorded. Furthermore, the relationship between polyploidy and reproductive biology is reviewed. Among these 106 Pteris species, 60% exhibit polyploidy: 22% show intraspecific polyploidy and 38% result from polyploid speciation. Apogamous species are common in Pteris. Diploids are the most frequent among Pteris species, and they can be sexual or apogamous. Triploids are apogamous; tetraploids are sexual or apogamous. Most Pteris species have one to two ploidy levels. The diverse ploidy levels suggest that these species have a complex evolutionary history and their taxonomic problems require further clarification.
            Bookmark
            • Record: found
            • Abstract: not found
            • Article: not found

            Ciclos biológicos de Blechnum occidentale L. var. occidentale (Blechnaceae-Pteridophyta) y Thelypteris resinifera (Desv.) Proctor (Thelypteridaceae-Pteridophyta)

              Bookmark
              • Record: found
              • Abstract: not found
              • Article: not found

              Cryptic characteristics distinguish diploid and triploid varieties of Pteris fauriei (Pteridaceae)

                Bookmark

                Author and article information

                Journal
                polib
                Polibotánica
                Polibotánica
                Instituto Politécnico Nacional, Escuela Nacional de Ciencias Biológicas (México, DF, Mexico )
                1405-2768
                2019
                : 48
                : 65-86
                Affiliations
                [2] DF orgnameInstituto Politécnico Nacional orgdiv1Escuela Nacional de Ciencias Biológicas orgdiv2Departamento de Botánica Mexico uzma1950ipn@ 123456gmail.com
                [3] DF orgnameInstituto Politécnico Nacional orgdiv1Escuela Nacional de Ciencias Biológicas orgdiv2Departamento de Botánica Mexico
                [1] DF orgnameInstituto Politécnico Nacional orgdiv1Escuela Nacional de Ciencias Biológicas orgdiv2Departamento de Botánica Mexico
                [4] DF orgnameInstituto Politécnico Nacional orgdiv1Escuela Nacional de Ciencias Biológicas orgdiv2Departamento de Botánica Mexico
                Article
                S1405-27682019000200065 S1405-2768(19)00004800065
                10.18387/polibotanica.48.6
                9da11247-9d33-4c93-8284-ceec6f9bd0a6

                This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

                History
                : 18 September 2018
                : 28 June 2019
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 34, Pages: 22
                Product

                SciELO Mexico


                sporophytes,apogamia,Pteris,apogamy,gametófitos,sustratos naturales,esporófitos,gametophytes,natural substrates

                Comments

                Comment on this article