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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Normale und ano[r]male Fruchtbildung bei Juniperus communis L. ein Beitrag zur Morphologie, Entwicklung und Anatomie der Wacholderbeeren (fructus juniperi) /

Kötter, Walther. January 1931 (has links)
Thesis (doctoral)--Hamburgische Universität, 1930. / Lebenslauf. Bibliography: p. [77]-78.
2

Mapování vegetace v oblasti Rajchéřovska

Kadlecová, Eva January 2010 (has links)
No description available.
3

Common juniper (Juniperuscommunis L.) ecology peculiarities in Lithuania / Paprastojo kadagio (Juniperus communis L.) ekologijos ypatumai Lietuvoje

Vaitkevičiūtė, Rasa 23 January 2014 (has links)
Relevance of the problem. Common juniper (Juniperus communis L.) is a characteristic underbrush plant of the dry and infertile forest ecosystems. Under favorable conditions, mostly on exposed slopes, common juniper comprises unique juniper communities. The species occupies a large range, is characterized by ecological plasticity and a large variety of populations (Adams, 2008). In many areas of the range it is an important element of the ecosystem, characterized by a large variety of forms. However, the prevalence of junipers and their ecological importance is often dealt with episodically, and on a wider scale - only in the British Isles (Plantlife, 2007, Thomas, 2007) and in some regions of Russia (Барзут, 2007; Михеева, 2002). Despite the large range, common juniper remains one of the least explored coniferous species. According to the Lithuanian National forest inventory data, common juniper is the most widespread in the south-southeastern Lithuanian pine forests on infertile (Nb) forest sites of normal humidity. Nb site occupies more than one fifth of the Lithuanian forest area, while about 94% of stands on this site type occupy pine stands where common juniper is the most common plant in the underbrush (State Forest Service, 2009). Juniper communities formed in the underbrush under intense forest management conditions generally suffer from economic activity, particularly due to final forest felling, when the largest and most valuable individuals are often damaged or... [to full text] / Paprastasis kadagys (Juniperus communis L.) yra charakteringas sausesnių ir mažiau derlingų miško ekosistemų trako augalas. Esant palankioms sąlygoms dažniausiai atviruo-se šlaituose paprastasis kadagys sudaro unikalias kadagynų bendrijas. Rūšis užima didelį arealą, pasižymi ekologiniu plastiškumu ir didele populiacijų įvairove (Adams, 2008). Daugelyje arealo sričių jis yra svarbus ekosistemos elementas, kuriam būdinga formų įvai-rovė. Tačiau kadagių paplitimas bei jų ekologinė svarba dažniausiai nagrinėjami epizodiš-kai, o plačiau – tik Britų salose (Plantlife, 2007; Thomas, 2007) ir kai kuriuose Rusijos re-gionuose (Барзут, 2007; Михеева, 2002). Nors arealas ir didelis, paprastasis kadagys vis dar yra viena iš mažiausiai ištirtų spygliuočių rūšių. Remiantis Lietuvos Nacionalinės miškų inventorizacijos duomenimis, paprastasis kadagys yra labiausiai paplitęs Pietų-Pietryčių Lietuvos pušynuose normalaus drėgnumo nederlingose (Nb) miško augavietėse. Nb augavietė užima daugiau nei penktadalį Lietuvos miškų ploto, o apie 94 % šios augavietės medynų sudaro pušynai, kuriuose paprastasis ka-dagys yra dažnai aptinkamas trako augalas (Valstybinė miškų tarnyba, 2009). Intensyvaus miškų ūkio sąlygomis medynų trake susiformavusios kadagių bendrijos paprastai nukenčia nuo ūkinės veiklos, ypač nuo pagrindinių miško kirtimų. Jų metu dažnai pažeidžiami arba sunaikinami vertingi stambiausi kadagių individai. Be to, pasikeičia šviesos ir temperatū-ros sąlygos bei hidrologinis režimas, todėl... [toliau žr. visą tekstą]
4

Explantátová kultura Juniperus virginiana / Explant culture of Juniperus virginiana

Předota, Václav January 2014 (has links)
1 ABSTRACT Charles University in Prague Faculty of pharmacy in Hradec Králové Department of pharmacognosy Student: Václav Předota Supervisor: PharmDr. Marie Kašparová, PhD. Title of diploma thesis: Plant tissue culture of Juniperus virginiana The derivation of callus cultures from leaves of Juniperus virginiana (varieties Hetzii, Glauca and Grey Owl) and determination of their growth curves were studied in this work. The cultures were cultivated at the temperature of 25 řC and light period of 16 hours light/8 hours dark on the Schenk and Hildebrandt medium with the addition of 3.0 mg.l-1 α-NAA and 0.2 mg. l-1 kinetin. It is clear from the growth curves, that all three varieties reached their maximum in growth on 35th day of the cultivation. The best results were achieved by variety Glauca.
5

Dendrologicko-ekologický průzkum Rajchéřovska

Pýcha, Zdeněk January 2010 (has links)
No description available.
6

Explantátová kultura Juniperus virginiana L. jako perspektivní zdroj podofylotoxinu / Plant tissue culture of Juniperus virginiana L. as perspective source of podophyllotoxin

Srbová, Lenka January 2016 (has links)
Charles University in Prague Faculty of Pharmacy in Hradec Králové Department of Pharmacognosy Student: Lenka Srbová Supervisor: PharmDr. Marie Kašparová, Ph.D. Title of diploma thesis: Tissue culture of Juniperus virginiana L. as a promising source of podophyllotoxin. The diploma thesis deals with the cultivation of Juniperus virginiana tissue cultures. A growth was observed at Juniperus virginiana two years old culture (variety 'Glauca' and 'Grey Owl') after adding various concentrations of phenylalanine (1 mmol.l-1, 10 mmol.l-1 and 100 mmol.l-1 ) at selected time intervals. The results show that the highest increase in callus fresh weight was detected at Juniperus virginiana variety 'Grey Owl', particularly on the 14th day after adding 10 mmol.l-1 phenylalanine. Suspension culture was successfully derived from the Juniperus virginiana two years old callus culture (variety 'Glauca').
7

Beitrage zur geschichte von Sambucus nigra, Juniperus communis und Juniperus Sabina ...

Lehmann, Heinrich, January 1935 (has links)
Inaug.-diss.--Basel. / Curriculum vitae. "Es lag uns hauptsãchlich daran, die entwicklung der medizinischen kenntnisse ... kennen zu lernen."--Einleitung. "Biographisches register": p. 151-160. "Literaturverzeichnis"; p. 161-171.
8

Landscape establishment and irrigation management of ornamental plants grown in eastern redcedar substrate

Carmichael, Travis Rex January 1900 (has links)
Master of Science / Department of Horticulture, Forestry, and Recreation Resources / Cheryl R. Boyer / Pine bark (PB) has been the principal component of nursery crop substrates in the United States for more than 60 years. Substrate material used for the purpose of growing ornamental plants in the Great Plains is generally shipped a great distance, primarily from the Southeastern U.S., due to a lack of pine plantations in this region. Eastern redcedar (Juniperus virginiana L.; ERC), an aggressively weedy tree species, has been identified as a possible alternative to PB for nursery substrates. The objective of this thesis was to evaluate the establishment of Miscanthus sinensis N.J. ‘Little Kitten’ (dwarf maiden grass), Rosa (L.) ‘Radtkopink’ (Knockout® rose), Ilex glabra (L.) A. Gray ‘Compacta’ (holly), Ulmus parvifolia Jacq. ‘Emer II’ (Allee® lacebark elm), Sedum telphium L. ‘Autumn Joy’ (sedum), Hosta Tratt. ‘Sum and Substance’ (hosta), and Hemerocallis L. ‘Charles Johnston’ (daylily) in three substrate mixes. These substrate mixes consisted of 80% PB: 20% sand, 80% ERC: 20% sand, and 40% PB: 40% ERC: 20% sand. At the end of the production phase differences in growth were observed in maiden grass, holly, lacebark elm, and sedum. At the end of the landscape establishment phase, no differences in growth were observed in any species except holly and hosta. To attempt to overcome the sub-optimal physical properties of ERC (high air space and low container capacity), cyclic irrigation was used to evaluate growth of Sedum spectabile Boreau ‘Autumn Fire’ (sedum), Rudbeckia fulgida Aiton ‘Goldstrum’ (black-eyed susan), and Hibiscus moscheutos L. ‘Luna White’ (hibiscus) in the same 3 substrates. The objective of this study was to evaluate the affect of irrigation frequency (1x, 2x, 3x, or 6x per day) and substrate ERC content on plant growth. Sedum had the greatest growth index (GI) shoot dry weight in PB and when irrigated 1x and 2x per day had the greatest root dry weight regardless of substrate. Irrigation frequency had no significant difference for GI and shoot dry weight Black-eyed susan had the greatest GI and shoot dry weight when grown in PB. Irrigation frequency only had an impact on shoot dry weight of black-eyed susan; plants irrigated 1x, 2x, and 3x per day had the greatest growth. Hibiscus had greatest growth in PB: ERC mix. Irrigation frequency had no impact on growth of hibiscus. Cyclic irrigation does not overcome low water holding capacities in these three species. Overall, ERC can be used as a partial replacement to PB (up to 50%). However, further research evaluating effects of different fertility regimes on ERC substrate is warranted.
9

Rostlinné explantátové kultury jako potenciální zdroj fenylpropanoidů II. / Plant tissue cultures as a potential source of phenylpropanoids II.

Šandová, Kateřina January 2019 (has links)
1 ABSTRACT Charles University in Prague Faculty of pharmacy in Hradec Králové Department of pharmacognosy Student: Kateřina Šandová Supervisor: PharmDr. Marie Kašparová, PhD. Title of diploma thesis: Plant tissue cultures as a potential source of phenylpropanoids II. This diploma thesis deals with the monitoring of jasmonic acid biotic elicitation impact on the production of podophyllotoxin in Juniperus virginiana suspension culture. The monitoring was carried out in two varieties of J. virginiana: var. 'Glauca' (7th and 19th passage) and var. 'Hetzii' (7th passage). The elicitation of the suspension culture was performed in 4 jasmonic acid concentrations: 0.005 mmol/l, 0.05 mmol/l, 0.5 mmol/l, 5 mmol/l. Samples were taken after 6, 24, 48 and 168 hours of elicitation. The best podophyllotoxin production increase was observed in the suspension culture of Juniperus virginiana var. 'Glauca' (7th passage). To achieve this result, the concentration of elicitor was 5 mmol/l and elicitor was applied for 168 hours. The podophyllotoxin production percentage was 0.067% and production increased by 179% over the control. Keywords: Juniperus virginiana, suspension cultures, podophyllotoxin, elicitation
10

Samplanteringar med härdiga barrväxter i fokus : -Designförslag i tre tänkta miljöer

Laggren, Malin January 2015 (has links)
Denna uppsats presenterar tre designförslag på samplanteringar med barrväxter i fokus. Designförslagen är gjorda till tre fiktiva platser med olika ståndort i växtzon 5, en liten entréplantering i västerläge med kalkhaltig jord, en mellanstor plantering i söderslänt med sandblandad jord och en parkplantering med fuktig jord med ett lågt pH-värde. Platserna är valda med tanken att läsarna ska kunna inspireras att använda barrväxter i olika typer av planteringar och trädgårdar. Till grund för växtvalen har gjorts en litteraturstudie inom området barrväxter, med fokus på barrväxters ståndort och hur de fungerar i samplanteringar med perenner och lignoser. Bakom designförslagen ligger även en idé om att hitta lite nya sätt att använda barrväxter, detta för att inte göra upprepningar av de skötselfria planteringarna med barrväxter som blev så oerhört populära på 70-talet och som delvis givit barrväxter ett dåligt rykte. Designförslagen presenteras i utförliga illustrationer och genom en processbeskrivning för att belysa designprocessens vägar och val, från början till slut.

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