Differentiation of Utricularia ochroleuca and U. stygia populations in Trebon basin, Czech Republic, on the basis of quadrifid glands / Bartosz J. Plachno in Carnivorous plant newsletter, vol. 36, n°3 (Année 2007) 

Public [article]  inCarnivorous plant newsletter > vol. 36, n°3 (Année 2007) . - pp. 87-95 Titre : Differentiation of Utricularia ochroleuca and U. stygia populations in Trebon basin, Czech Republic, on the basis of quadrifid glands Type de document : Livre Auteurs : Bartosz J. Plachno, Auteur ; Lubomír Adamec, Auteur Année de publication : 2007 Article en page(s) : pp. 87-95 Langues : Anglais Catégories : [ZG] République tchèque Use for events after 1992. [Espèces (in biblio)] Utricularia ochroleuca [Espèces (in biblio)] Utricularia stygia [Thèmes] Physiologie végétale [Thèmes] Taxonomie Résumé : "Utricularia ochroleuca R. Hartm. is an amphibious/aquatic carnivorous plant occurring relatively rarely throughout Europe and North America in peat bogs and shallow standing dystrophic waters. This species rarely flowers, is sterile, and is possibly of hybridogenic origin (i.e. U. minor × U. intermedia)." (source : auteurs) Type de publication : périodique Référence biblio : Plachno B., Adamec L., 2007 - Differentiation of Utricularia ochroleuca and U. stygia populations in Trebon basin, Czech Republic, on the basis of quadrifid glands. Carnivorous plant newsletter, 36 (3) : 87-95. ID PMB : 70607 En ligne : https://www.biodiversitylibrary.org/page/54591242#page/23/mode/1up Format de la ressource électronique : document Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=70607 [article]

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Intraspecific differentiation of Sparganium erectum in the Czech Republic: molecular, genome size and morphometric analysis / Sona Pisova in Preslia, vol. 92 (Année 2020) 

Public [article]  inPreslia > vol. 92 (Année 2020) . - pp. 137-165 Titre : Intraspecific differentiation of Sparganium erectum in the Czech Republic: molecular, genome size and morphometric analysis Type de document : Livre Auteurs : Sona Pisova, Auteur ; Tomas Fer, Auteur Année de publication : 2020 Article en page(s) : pp. 137-165 Langues : Anglais Catégories : [ZG] République tchèque Use for events after 1992. [Espèces (in biblio)] Sparganium [Espèces (in biblio)] Sparganium erectum Mots-clés : génome  hybridation  Amplification Fragment Length Polymorphism (AFLP)  analyse multivariée Résumé : "Aquatic and wetland plants tend to be very phenotypically plastic, which accounts for the taxonomic difficulties in many groups. In the genus Sparganium, which comprises about 14 species, numerous taxa at different ranks are described. The classification of the genus is based on generative characters on the fruit, which are less influenced by the environment than vegetative characters. Nevertheless, the intraspecific division of Sparganium erectum poses problems, especially the existence of several intraspecific taxa along with intermediate individuals. In this study we examined four European subspecies of S. erectum (subsp. erectum, subsp. microcarpum, subsp. neglectum and subsp. oocarpum) from 64 populations in the Czech Republic. A combination of multivariate morphometrics, AFLPs and genome size estimation allowed us to confirm the current subspecies classification and investigate putative intraspecific hybridization. Four genetic groups with different genome sizes corresponding to the subspecies were found. Morphological characters that were described in previous studies correlated with these genetic groups and thus affirmed the classification. The most important characters for subspecies differentiation were width and length of fruit, style length, length of the upper part of the fruit and constriction in the middle part of the fruit. In addition, admixed individuals between the genetic groups were recorded. The hybrid origin of subsp. oocarpum was confirmed, being derived from the crossing of subsp. erectum and subsp. neglectum. Finally, three other hybrid combinations were detected, suggesting recent hybridization: subsp. erectum × subsp. microcarpum, subsp. microcarpum × subsp. neglectum, and subsp. erectum × subsp. oocarpum." (source : auteurs) Type de publication : périodique Référence biblio : Pisova S., Fer T., 2020 - Intraspecific differentiation of Sparganium erectum in the Czech Republic: molecular, genome size and morphometric analysis. Preslia, 92 : 137-165. ID PMB : 69773 DOI : 10.23855/preslia.2020.137 En ligne : http://www.preslia.cz/doi/preslia.2020.137.html Format de la ressource électronique : document Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=69773 [article]

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Physalis alkekengi , in Europa und in der Tschechoslowakei besonders / Hendrych Radovan in Acta Universitatis Carolinae. Biologica, vol. 33 (1989)

Public [article]  inActa Universitatis Carolinae. Biologica > vol. 33 (1989) . - pp. 1-42 Titre : Physalis alkekengi , in Europa und in der Tschechoslowakei besonders Type de document : Livre Auteurs : Hendrych Radovan, Auteur Année de publication : 1989 Article en page(s) : pp. 1-42 Langues : Allemand Catégories : [ZG] Europe [ZG] République tchèque Use for events after 1992. [Espèces (in biblio)] Physalis alkekengi Type de publication : périodique Référence biblio : Radovan H., 1989 - Physalis alkekengi , in Europa und in der Tschechoslowakei besonders. Acta Universitatis Carolinae. Biologica, 33 : 1-42. ID PMB : 64352 Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=64352 [article]

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Seed bank of Littorella uniflora (L.) Asch. in the Czech Republic, Central Europe : does burial depth and sediment type influence seed germination? / Jan Kolar in Hydrobiologia, vol. 794 (Année 2017)

Public [article]  inHydrobiologia > vol. 794 (Année 2017) . - pp. 347-358 Titre : Seed bank of Littorella uniflora (L.) Asch. in the Czech Republic, Central Europe : does burial depth and sediment type influence seed germination? Type de document : Livre Auteurs : Jan Kolar, Auteur ; Andrea Kucerova, Auteur ; Pavel Jakubec, Auteur ; Jan Vymazal, Auteur Année de publication : 2017 Article en page(s) : pp. 347-358 Langues : Anglais Catégories : [ZG] République tchèque Use for events after 1992. [Espèces (in biblio)] Littorella uniflora [Thèmes] Banque de graines [Thèmes] Conservation [Thèmes] Germination des graines [Thèmes] Plante aquatique Résumé : "Littorella uniflora (Plantaginaceae) is a scarce and declining aquatic plant in Europe. Its population has been strongly reduced by changes in fishpond management (eutrophication) in the Czech Republic since the 1950s. We studied its seed bank in both recent (n = 8) and historical localities (the last found from 1972 to 2000; n = 10) and tested the effects of sediment type and burial depth on seed germination using extracted seeds from two recent populations. The seeds were found in 60% of the historical localities, mostly in low densities (≤6 seeds per 3.75 l of sediment), and also in 100% of the recent localities in various densities (8–1390 seeds per 3.75 l of sediment); however, low germination rates (0–13.3%) were estimated. The seeds germinated best on wet filter paper, followed by nutrient-rich fishpond sediment, but poorly on sand mixed with different substrates. Burial depth significantly affected seed germination. The seeds germinated only on the soil surface and at the depth of 1 cm but no seed germinated at the depth of 3 and 5 cm. Besides low water transparency, both high rate of sediment accumulation and the absence of summer drainage may endanger L. uniflora populations in fishponds." (source : auteurs) Type de publication : périodique Référence biblio : Kolar J., Kucerova A., Jakubec P., Vymazal J., 2017 - Seed bank of Littorella uniflora (L.) Asch. in the Czech Republic, Central Europe : does burial depth and sediment type influence seed germination? Hydrobiologia, 794 : 347-358. ID PMB : 71775 Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=71775 [article]

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Towards unification of national vegetation classifications : a comparison of two methods for analysis of large data sets / Heide Bruelheide in Journal of Vegetation Science, vol. 11, n°2 (Année 2000)

Public [article]  inJournal of Vegetation Science > vol. 11, n°2 (Année 2000) . - pp. 295-306 Titre : Towards unification of national vegetation classifications : a comparison of two methods for analysis of large data sets Type de document : Livre Auteurs : Heide Bruelheide, Auteur ; Milan Chytrý, Auteur Année de publication : 2000 Article en page(s) : pp. 295-306 Langues : Anglais Catégories : [ZG] République tchèque Use for events after 1992. Mots-clés : classification de la végétation  méthode Résumé : "In European phytosociology, national classifications of corresponding vegetation types show considerable differences even between neighbouring countries. Therefore, the European Vegetation Survey project urgently needs numerical classification methods for large data sets that are able to produce compatible classifications using data sets from different countries. We tested the ability of two methods, TWINSPAN and COCKTAIL, to produce similar classifications of wet meadows (Calthion, incl. Filipendulenion) for Germany (7909 relevés) and the Czech Republic (1287 relevés) in this respect." (source : auteurs) Type de publication : périodique Référence biblio : Bruelheide H., Chytrý M., 2000 - Towards unification of national vegetation classifications : a comparison of two methods for analysis of large data sets. Journal of Vegetation Science, 11 (2) : 295-306. ID PMB : 65718 DOI : 10.2307/3236810 Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=65718 [article]

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What is the impact of Impatiens glandulifera on species diversity of invaded riparian vegetation ? / Martin Hejda in Biological conservation, vol. 132, n°2 (Octobre 2006)

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