U.S. flag

An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

PubAg

Main content area

You searched for: Subject Sweden Remove constraint Subject: Sweden Subject term clones Remove constraint Subject term: clones
Start Over

Search

72  Search Results

« Previous | 1 - 20 of 72 |
Number of results to display per page

Search Results

1. Above-ground Woody Biomass Production of Short-rotation Populus Plantations on Agricultural Land in Sweden

Author:
Karacic, Almir; Verwijst, Theo; Weih, Martin
Source:
Scandinavian journal of forest research 2003 v.18 no.5 pp. 427-437
ISSN:
0282-7581
Subject:
Populus balsamifera subsp. balsamifera; aboveground biomass; bioenergy; biomass production; clones; energy; growth performance; hybrids; latitude; plantations; planting; pulpwood; tree and stand measurements; trees; Sweden
Abstract:
... Although poplars are widely grown in short-rotation forestry in many countries, little is known about poplar growth performance in Sweden. In this study, above-ground biomass production was estimated for several hybrid aspen and poplar clones planted at different initial density at five locations across Sweden. Biomass assessments were based on allometric relationships between total above-ground w ...
DOI:
10.1080/02827580310009113

2. Abundance and Diversity of Biofilms in Natural and Artificial Aquifers of the Äspö Hard Rock Laboratory, Sweden

Author:
Jägevall, Sara; Rabe, Lisa; Pedersen, Karsten
Source:
Microbial ecology 2011 v.61 no.2 pp. 410-422
ISSN:
0095-3628
Subject:
Desulfobulbus; Desulfomicrobium; Desulforhopalus; Desulfovibrio; Stenotrophomonas maltophilia; aquifers; biofilm; clones; community structure; drills; genes; laminar flow; polymerase chain reaction; ribosomal RNA; rocks; sulfate-reducing bacteria; water pollution; Sweden
Abstract:
... Six cores were drilled and retrieved from 186-m depth in the Äspö Hard Rock Laboratory (HRL) tunnel to investigate whether indigenous biofilms develop on fracture surfaces in groundwater-conducting aquifers in granitic rock. A clone library was constructed from fracture surface material (FSM), for community composition analysis. Quantitative polymerase chain reaction (qPCR) was applied to quantify ...
DOI:
10.1007/s00248-010-9761-z
PubMed:
21132427

3. Advantage of clonal deployment in Norway spruce (Picea abies (L.) H. Karst)

Author:
Zhi-Qiang Chen; Hong Nguyen Thi Hai; Andreas Helmersson; Mateusz Liziniewicz; Henrik R. Hallingbäck; Anders Fries; Mats Berlin; Harry X. Wu
Source:
Annals of forest science 2020 v.77 no.1 pp. 14
ISSN:
1286-4560
Subject:
Picea abies; clones; forestry; genetic improvement; growth traits; progeny; seedlings; selection intensity; trees; variance; wood quality; Sweden
Abstract:
... KEY MESSAGE : There is considerable genetic gain of tree volume from clonal deployment in Norway spruce (Picea abies(L.) H. Karst) and clonal deployment will have at least 50% more or double genetic gain than the seedling deployment. CONTEXT : Genetic parameters and genetic gains for wood quality and growth traits were estimated in six large clonal progeny trials. AIMS : Develop the optimal clonal ...
DOI:
10.1007/s13595-020-0920-1

4. Aftereffects of maternal environment on autumn frost hardiness in Pinus sylvestris seedlings in relation to cultivation techniques

Author:
Andersson, B.
Source:
Tree physiology 1994 v.14 no.3 pp. 313-322
ISSN:
0829-318X
Subject:
maternal effect; winter hardiness; plant breeding; mathematical models; seedlings; geographical variation; equations; frost injury; clones; frost resistance; genotype-environment interaction; Pinus sylvestris; genetic variation; inheritance (genetics); Sweden
Abstract:
... Full-sib families of Pinus sylvestris (L.) from genetically identical parent clones, grown at three geographic locations (64, 59.5, and 56 degrees N), were tested for autumn frost hardiness. At one of the locations (64 degrees N), maternal clones were grown in plots subjected to different site treatments. Progenies raised in a heated greenhouse with additional artificial light were induced to unde ...
DOI:
10.1093/treephys/14.3.313

5. Change of clonal frequency in the second root sucker generation of hybrid aspen

Author:
Lars-Göran Stener; Dainis Rungis; Viktorija Belevich; Johan Malm
Source:
Forest ecology and management 2018 v.408 pp. 174-182
ISSN:
0378-1127
Subject:
Populus tremula; Populus tremuloides; clones; genetic variation; genotyping; hybrids; microsatellite repeats; reforestation; seedlings; stumps; wood; Sweden
Abstract:
... Two hybrid aspen (Populus tremula L. × P. tremuloides Michx.) trials in southern Sweden were used for studies of clonal composition in the second of two root sucker regenerations. Trial 1 was established in 1998 and originally included eight clones randomly distributed in four plots, each having 10 × 10 positions. Trial 2 was planted in 1957, with 150 seedlings from each of 25 full sib families ra ...
DOI:
10.1016/j.foreco.2017.10.034

6. Clonal differences in susceptibility to the dieback of Fraxinus excelsior in southern Sweden

Author:
Lars-Göran Stener
Source:
Scandinavian journal of forest research 2013 v.28 no.3 pp. 205-216
ISSN:
1651-1891
Subject:
Fraxinus excelsior; autumn; breeding; clones; color; dieback; genetic correlation; growing season; heritability; leaves; phenology; phenotype; plus trees; seed orchards; Sweden
Abstract:
... Ash dieback damage was assessed and analysed on 16–22 year-old grafts in two ash seed orchards (Fraxinus excelsior L.). The grafts originated from 106 plus-tree clones selected from 27 stands in southern Sweden based on their phenotypes. The results obtained indicate that ash dieback disease is strongly genotypically controlled. There was considerable genotypic variation among individuals. None of ...
DOI:
10.1080/02827581.2012.735699

7. Clonal success of piliated penicillin nonsusceptible pneumococci

Author:
Sjöström, K.; Blomberg, C.; Fernebro, J.; Dagerhamn, J.; Morfeldt, E.; Barocchi, M.A.; Browall, S.; Moschioni, M.; Andersson, M.; Henriques, F.; Albiger, B.; Rappuoli, Rino; Normark, S.; Henriques-Normark, B.
Source:
Proceedings of the National Academy of Sciences of the United States of America 2007 v.104 no.31 pp. 12907-12912
ISSN:
0027-8424
Subject:
animal models; antibiotic resistance; clones; fimbriae; microarray technology; penicillins; polymerase chain reaction; serotypes; Sweden
Abstract:
... Antibiotic resistance in pneumococci is due to the spread of strains belonging to a limited number of clones. The Spain⁹V-3 clone of sequence type (ST)156 is one of the most successful clones with reduced susceptibility to penicillin [pneumococci nonsusceptible to penicillin (PNSP)]. In Sweden during 2000-2003, a dramatic increase in the number of PNSP isolates was observed. Molecular characteriza ...
DOI:
10.1073/pnas.0705589104
PubMed:
17644611
PubMed Central:
PMC1929012

8. Clonality and genetic variation in Amylostereum areolatum and A. chailletii from northern Europe

Author:
Vasiliauskas, R.; Stenlid, J.; Thomsen, I.M.
Source:
New phytologist 1998 v.139 no.4 pp. 751-758
ISSN:
0028-646X
Subject:
Polyporales; genetic variation; clones; DNA fingerprinting; nucleotide sequences; plant pathogenic fungi; disease transmission; decay fungi; disease vectors; geographical distribution; spore dispersal; basidiospores; genotype; Urocerus gigas; Denmark; Sweden; Lithuania; Scotland
DOI:
10.1046/j.1469-8137.1998.00240.x

9. Clonality of Vibrio anguillarum strains isolated from fish from the Scandinavian countries, Sweden, Finland and Denmark

Author:
Pedersen, K.; Kuhn, I.; Seppanen, J.; Hellstrom, A.; Tiainen, T.; Rimaila-Parnanen, E.; Larsen, J.L.
Source:
Journal of applied microbiology 1999 v.86 no.2 pp. 337-347
ISSN:
1364-5072
Subject:
Vibrio anguillarum; antiserum; clones; cluster analysis; fish; molecular weight; phenotype; plasmids; ribotypes; serotypes; vibriosis; virulence; Chile; Denmark; Finland; North America; Southern European region; Sweden; Tasmania; United Kingdom
Abstract:
... In order to investigate whether outbreaks of vibriosis in the Baltic region were caused by the spread of certain pathogenic clones, 291 Vibrio anguillarum isolates from Finland (n = 156), Sweden (n = 88) and Denmark (n = 47) were studied with respect to serogroup, ribotype, plasmid content, and biochemical phenotypes as expressed with the PhenePlate (PhP) typing system. For comparison, 54 V. angui ...
DOI:
10.1046/j.1365-2672.1999.00658.x

10. Colonization dynamics of the clonal moss Hylocomium splendens on islands in a Baltic land uplift area: reproduction, genet distribution and genetic variation

Author:
Cronberg, N.
Source:
Journal of ecology 2002 v.90 no.6 pp. 925-935
ISSN:
0022-0477
Subject:
spores; reproduction; islands; allozymes; loci; spatial distribution; males; sex ratio; ecological succession; clones; Hylocomium splendens; genotype; population growth; genetic variation; altitude; females; shoots; Sweden
Abstract:
... 1. Islands representing four stage classes, dated by their height above sea level, in a Baltic land uplift area were used to study genet level dynamics during colonization of the clonal moss Hylocomium splendens. Allozyme electrophoresis involving 10 polymorphic loci enabled accurate identification of 103 haplotypes from a sample of 694 shoots collected along transects across 10 islands. 2. The po ...
DOI:
10.1046/j.1365-2745.2002.00723.x

11. Cooperative breeding for the northern marginal areas

Author:
Helgadottir, A.; Bjornsson, H.
Source:
Euphytica 1994 v.77 no.3 pp. 221-230
ISSN:
0014-2336
Subject:
variety trials; Phleum pratense; clones; genotype-environment interaction; agricultural programs and projects; genotype; population; Norway; Sweden; Iceland; Denmark; Finland
DOI:
10.1007/BF02262634

12. Demography and modelling of clonal fragments in the pseudoannual plant shape Trientalis europaea L.

Author:
Jesús Piqueras; Leoš Klimeš
Source:
Plant ecology 1998 v.136 no.2 pp. 213-227
ISSN:
1385-0237
Subject:
simulation models; plant communities; spatial distribution; stolons; clones; tubers; growth models; length; Primulaceae; life cycle (organisms); mortality; Sweden
Abstract:
... The clonal growth pattern and demography of clonal fragments (aggregation of ramets derived from a common parent ramet) in the pseudoannual plant Trientalis europaea were studied in field conditions from 1991 to 1993. During this period the population of clonal fragments declined, with a half-life of 7.4 years. Number and size of the clonal progeny and stolon length were positively related to the ...
DOI:
10.1023/A:1009753515163

13. Development of flowering and the effect of pruning in a clonal seed orchard of lodgepole pine

Author:
Fries, A.
Source:
Canadian journal of forest research = 1994 v.24 no.1 pp. 71-76
ISSN:
0045-5067
Subject:
height; plant characteristics; Pinus contorta; clones; flowering; pruning; volume; pollen; male flowers; female flowers; seed orchards; Sweden
Abstract:
... The development of female and male flowering among 20 clones was studied in a clonal seed orchard of lodgepole pine (Pinus contorta var. latifolia Engelm.) in central Sweden. Flowering in relation to height, crown volume, and pruning was also studied. Twelve years after grafting (7 years after field planting), female flowering averaged 43 strobili per graft while male strobili were few. Eighteen y ...
DOI:
10.1139/x94-011

14. Differences in growth and areal production between Norway spruce (Picea abies L. Karst) regeneration material representing different levels of genetic improvement

Author:
Mateusz Liziniewicz; Mats Berlin
Source:
Forest ecology and management 2019 v.435 pp. 158-169
ISSN:
0378-1127
Subject:
Picea abies; clones; forestry; genetic improvement; planting; provenance; survival rate; Sweden
Abstract:
... Six groups of Norway spruce (Picea abies L. Karst) plants with varying levels of genetic gain and unimproved local provenances were compared in four realised gain trials at four sites in central Sweden. The groups were planted separately in experimental plots and compared in terms of survival rate and height 4 years after planting, as well as survival rate, height, diameter and areal volume produc ...
DOI:
10.1016/j.foreco.2018.12.044

15. Early selection improves clonal performance and reduces intraclonal variation of Norway spruce plants propagated by somatic embryogenesis

Author:
Hogberg, K.A.; Bozhkov, P.V.; Arnold, S. von.
Source:
Tree physiology 2003 v.23 no.3 pp. 211-216
ISSN:
0829-318X
Subject:
clonal variation; in vitro culture; cryopreservation; seedlings; plant characteristics; height; somatic embryogenesis; Picea abies; clones; length; roots; somatic embryos; Sweden
Abstract:
... Height growth during the first and second growth periods (i.e., the June-September period in consecutive years) and intraclonal variation were assessed in 13 Norway spruce (Picea abies (L.) Karst.) clones propagated by somatic embryogenesis. The plants were acclimatized and grown in a greenhouse until mid-July and then transferred outdoors. The clonal mean heights after the first and second growth ...
DOI:
10.1093/treephys/23.3.211
PubMed:
12566272

16. Effect of anatomical structure on the buoyancy of achenes of two subspecies ofBolboschoenus maritimus

Author:
Zdenka Hroudová; Lenka Moravcová; Petr Zákravský
Source:
Folia geobotanica 1997 v.32 no.4 pp. 377-390
ISSN:
1211-9520
Subject:
clones; coasts; exocarp; gardens; habitats; inflorescences; littoral zone; rhizomes; surface water; tubers; wetlands; Sweden
Abstract:
... Differences between two subspecies ofBolboschoenus maritimus (L.)PALLA (=Scirpus maritimus L.) in different habitats (littoral and terrestrial) are partly due to variations in the buoyancy of their achenes, caused by different anatomical structure of the fruits. This hypothesis was tested by comparing fruit buoyancy and anatomy of both subspecies at several localities.Plants were sampled fromBolbo ...
DOI:
10.1007/BF02821943

17. Effect of latitude and acclimation on the lethal temperatures of the peach‐potato aphid Myzus persicae

Author:
Lucy Alford; Tim M. Blackburn; Jeffrey S. Bale
Source:
Agricultural and forest entomology 2012 v.14 no.1 pp. 69-79
ISSN:
1461-9555
Subject:
temperature; insects; microsatellite repeats; heat tolerance; mixing; peaches; Myzus persicae; Macrosiphum euphorbiae; acclimation; clones; climate change; environmental factors; latitude; biodiversity; climatic zones; cold tolerance; Sweden; Spain
Abstract:
... 1 Aphids, similar to all insects, are ectothermic and, consequently, are greatly affected by environmental conditions. The peach potato aphid Myzus persicae (Sulzer) has a global distribution, although it is not known whether populations display regional adaptations to distinct climatic zones along its distribution and vary in their ability to withstand and acclimate to temperature extremes. In th ...
DOI:
10.1111/j.1461-9563.2011.00553.x

18. Effector-driven marker development and cloning of resistance genes against Phytophthora infestans in potato breeding clone SW93-1015

Author:
Marit Lenman; Ashfaq Ali; Per Mühlenbock; Ulrika Carlson-Nilsson; Erland Liljeroth; Nicolas Champouret; Vivianne G. A. A. Vleeshouwers; Erik Andreasson
Source:
Theoretical and applied genetics 2016 v.129 no.1 pp. 105-115
ISSN:
0040-5752
Subject:
Phytophthora infestans; Solanum tuberosum; amino acids; clones; crossing; cultivars; disease resistance; gene expression; genes; genetic markers; genotype; hydrogen peroxide; molecular cloning; plant pathogens; potatoes; screening; Sweden
Abstract:
... KEY MESSAGE : We show the usefulness of integrating effector screening in a breeding program and in resistance gene cloning, with Phytophthora resistance in the Swedish potato breeding clone SW93-1015 as an example. Phytophthora infestans is one of the most devastating plant pathogens worldwide. We have earlier found that the SW93-1015 potato breeding clone has an efficient resistance against P. i ...
DOI:
10.1007/s00122-015-2613-y

19. Effects of Cutting Phenology (Non-dormant Versus Dormant) on Early Growth Performance of Three Willow Clones Grown Under Different Weed Treatments and Planting Dates

Author:
Monika Welc; Anneli Lundkvist; Theo Verwijst
Source:
BioEnergy research 2017 v.10 no.4 pp. 1094-1104
ISSN:
1939-1234
Subject:
aboveground biomass; biomass production; clones; cold storage; crop-weed competition; cutting; growth performance; models; phenology; planting date; spring barley; sprouting; tree growth; weed control; willows; Sweden
Abstract:
... To assess the effects of cutting phenology on early growth performance of three willow clones grown under different weed treatments and planting dates, freshly harvested (non-dormant) and cold-stored (dormant) cuttings from willow clone Tora, Jorr, and Olof were planted in bucket experiment outdoors in central Sweden on five planting dates (May–June 2013) with or without a model weed (spring barle ...
DOI:
10.1007/s12155-017-9871-2

20. Effects of Propagule Phenology (Non-Dormant Versus Dormant) and Planting System (Vertical Versus Horizontal) on Growth Performance of Willow Clones Grown Under Different Weeding Regimes

Author:
Monika Welc; Anneli Lundkvist; Theo Verwijst
Source:
BioEnergy research 2018 v.11 no.3 pp. 703-714
ISSN:
1939-1234
Subject:
aboveground biomass; biomass production; clones; cold storage; crop-weed competition; field experimentation; growth performance; phenology; planting; spring; sprouting; weed control; willows; Sweden
Abstract:
... To assess the effects of propagule phenology and planting system on growth performance of three willow clones grown under different weeding regimes, a field experiment was performed in central Sweden 2014–2016. Freshly harvested (non-dormant) and cold-stored (dormant) cuttings (planted vertically) and billets (planted horizontally) from willow clones Tordis, Tora, and Jorr were planted in weeded a ...
DOI:
10.1007/s12155-018-9929-9