Results 11 to 20 of about 1,374 (186)

Provenance Variation in Functional Traits of European Forest Trees: Meta-Analysis Reveals Effects of Taxa and Age Despite Critical Research Gaps. [PDF]

open access: yesEcol Evol
This meta‐analysis on intraspecific variation in European trees studied the frequency of provenance variation, provenance–environment interaction, clinal variation along the climate of origin or transfer distance. While identifying trait group specific patterns of variation, research gaps have been identified in terms of age and geographical ...
Aspalter S   +4 more
europepmc   +2 more sources

First automatic size measurements for the separation of dwarf birch and tree birch pollen in MIS 6 to MIS 1 records from Northern Germany. [PDF]

open access: yesEcol Evol
Using image recognition with a series of convolutional networks and machine learning, we automatically measure the size of fossil birch pollen from sediment samples. The measurements are useful for determining the presence of dwarf birches versus tree birches in the past.
Theuerkauf M   +5 more
europepmc   +2 more sources

Commodity risk assessment of debarked conifer wood chips fumigated with sulfuryl fluoride from the US. [PDF]

open access: yesEFSA J
Abstract The European Commission requested the EFSA Panel on Plant Health to deliver a risk assessment on the likelihood of pest freedom from regulated EU quarantine pests, with emphasis on Bursaphelenchus xylophilus and its vectors Monochamus spp. of debarked conifer wood chips fumigated with sulfuryl fluoride as proposed by the United States (US) and
EFSA Panel on Plant Health (PLH)   +32 more
europepmc   +2 more sources

Multiple forms of superoxide dismutase in the apoplast and whole-needle extract of Serbian spruce [Picea omorika (Panč.) Purkyně] [PDF]

open access: yesArchives of Biological Sciences, 2006
Activity and isoenzyme composition of superoxide dismutase in the apoplast and whole-needle extract of Picea omorika (Panč.) Purkyně, was studied. Total SOD activity of the soluble fraction of the needle extract exceeded markedly that of the apoplastic ...
Bogdanović Jelena   +4 more
doaj   +1 more source

Antioxidative enzymes during germination of two lines of Serbian spruce [Picea omorika (Panč.) Purkyně] [PDF]

open access: yesArchives of Biological Sciences, 2007
Two lines of Picea omorika (Panč.) Purkyně were compared with respect to germination percentage as well as specific activity and isoenzyme pattern of catalase, superoxide dismutase, and peroxidase (POD) during germination. Line A had a higher germination
Prodanović Olivera   +5 more
doaj   +1 more source

Picea omorika is a self-fertile but outcrossing conifer [PDF]

open access: yesHeredity, 1992
Outcrossing rates were estimated in a natural Yugoslavian and in a cultivated Finnish population of Serbian spruce [Picea omorika (Pančić) Purk.]. The outcrossing rates in the cultivated stand in two years were 0.98 ±0.03 and 1.02 ±0.04, and in the natural stand 0.84 ±0.05.
Helmi, Kuittinen, Outi, Savolainen
openaire   +2 more sources

Cell wall response to UV radiation in needles of Picea omorika [PDF]

open access: yesPlant Physiology and Biochemistry, 2021
The UV-B represents the minor fraction of the solar spectrum, while UV-C is not contained in natural solar radiation, but both radiation types can cause damaging effects in plants. Cell walls (CWs) are one of the targets for external stressors. Juvenile P.
Aleksandra Lj Mitrović   +14 more
openaire   +4 more sources

Commodity risk assessment of Quercus petraea plants from the UK

open access: yesEFSA Journal, Volume 21, Issue 10, October 2023., 2023
Abstract The European Commission requested the EFSA Panel on Plant Health to prepare and deliver risk assessments for commodities listed in Commission Implementing Regulation (EU) 2018/2019 as ‘High‐risk plants, plant products and other objects’. This Scientific Opinion covers plant health risks posed by plants of Quercus petraea imported from the UK ...
EFSA Panel on Plant Health (PLH)   +29 more
wiley   +1 more source

Commodity risk assessment of Quercus robur plants from the UK

open access: yesEFSA Journal, Volume 21, Issue 10, October 2023., 2023
Abstract The European Commission requested the EFSA Panel on Plant Health to prepare and deliver risk assessments for commodities listed in Commission Implementing Regulation (EU) 2018/2019 as ‘High‐risk plants, plant products and other objects’. This Scientific Opinion covers plant health risks posed by plants of Quercus robur imported from the UK as:
EFSA Panel on Plant Health (PLH)   +29 more
wiley   +1 more source

Commodity risk assessment of Acer campestre plants from the UK

open access: yesEFSA Journal, Volume 21, Issue 7, July 2023., 2023
Abstract The European Commission requested the EFSA Panel on Plant Health to prepare and deliver risk assessments for commodities listed in Commission Implementing Regulation (EU) 2018/2019 as ‘High risk plants, plant products and other objects’. This Scientific Opinion covers plant health risks posed by plants of Acer campestre imported from the UK as:
EFSA Panel on Plant Health (PLH)   +30 more
wiley   +1 more source

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