Results 11 to 20 of about 1,424 (167)

Sesquiterpene Induction by the Balsam Woolly Adelgid (Adelges piceae) in Putatively Resistant Fraser Fir (Abies fraseri)

Forests, 2022
Fraser fir, Abies fraseri (Pursh) Poir., is a tree endemic to the Southern Appalachians and is found only in a few isolated populations at high elevations. Fraser firs are also cultivated on a commercial scale as Christmas trees. The species is imperiled by an introduced insect, the balsam woolly adelgid, Adelges piceae Ratzeburg (BWA).
Austin Thomas, David C. Tilotta, John Frampton, Robert M. Jetton   +3 more
openaire   +3 more sources

Stage-Specific Responses to Warming in Trojan Fir Across Early Life Stages: Germination, Seedling Survival, and Seedling Growth. [PDF]

Ecol Evol
We investigated the effects of temperature, cold stratification, and light on germination and early seedling growth in Abies nordmanniana subsp. equi‐trojani (Trojan fir), an endangered endemic tree from northwestern Anatolia (Türkiye). Our results show that while higher fixed and alternating temperatures enhance germination, they also lead to ...
Usta N, Tavşanoğlu Ç.
europepmc   +2 more sources

Assessing the viability of genebanked seeds from rare, wild plants native to the United States using the D.E.A.D. paradigm [PDF]

Appl Plant Sci
Abstract Premise Genebanks must maintain viable seeds for decades. Seeds that germinate are clearly alive, but some seeds, often from wild populations, do not germinate because they are dormant, empty, aged, or damaged (D.E.A.D.). This work evaluates the effects of D.E.A.D.
Walters C, Hill L, Heineman K, Tetreault H, Ibrahim S, Markstein K, Birker C, Freitag K, Wolkis D, Kunz M, Murray S, Kingsley N, Seglias A, Matsumoto N, Kaye T, Peterson C, Albrecht M, Dell N, Anderson S, Blackwell S, Remucal D, Gibble W, Tiller A, Coffey E, Ligon J, Blackmore L, Radcliffe C, Schneider H, Nelson K, Sollenberger D, Finch J, Wellspring K, Jetton R, Maschinski J.   +33 more
europepmc   +2 more sources

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

EFSA 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), Vicent Civera A, Baptista P, Berlin A, Chatzivassiliou E, Cubero J, Cunniffe N, de la Peña E, Desneux N, Di Serio F, Filipiak A, Hasiow-Jaroszewska B, Jactel H, Landa B, Maistrello L, Makowski D, Milonas P, Papadopoulos NT, Potting R, Susi H, Van Der Gaag DJ, Battisti A, Bragard C, Magnusson C, Mas H, Rigling D, Faccoli M, Mikulová A, Stergulc F, Christoph E, Mosbach-Schulz O, Streissl F, Gonthier P.   +32 more
europepmc   +2 more sources

Commodity risk assessment of <i>Salix caprea</i> and <i>Salix cinerea</i> plants from the UK. [PDF]

EFSA J
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’.
EFSA Panel on Plant Health (PLH), Vicent Civera A, Baptista P, Berlin A, Chatzivassiliou E, Cubero J, Cunniffe N, de la Peña E, Desneux N, Di Serio F, Filipiak A, Hasiów-Jaroszewska B, Jactel H, Landa BB, Maistrello L, Makowski D, Milonas P, Papadopoulos NT, Potting R, Susi H, van Der Gaag DJ, Battisti A, Bragard C, Magnusson CS, Mas H, Rigling D, Faccoli M, Mikulová A, Stergulc F, Mosbach-Schulz O, Streissl F, Gonthier P.   +31 more
europepmc   +2 more sources

Recent fir hybridization research in the light of Czech-American cooperation

Journal of Forest Science, 2009
The project is based on control pollination of different fir species in the sense of interspecific hybridization. The aim of this procedure is a new bred material for specific needs of forestry and Christmas tree production.
J. Kobliha, J. Stejskal
doaj   +1 more source

Commodity risk assessment of Betula pendula and Betula pubescens plants from the UK. [PDF]

EFSA J
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 Betula pendula and B.
EFSA Panel on Plant Health (PLH), Civera AV, Baptista P, Berlin A, Chatzivassiliou E, Cubero J, Cunniffe N, de la Peña E, Desneux N, Di Serio F, Filipiak A, Hasiów-Jaroszewska B, Jactel H, Landa BB, Maistrello L, Makowski D, Milonas P, Papadopulos NT, Potting R, Susi H, Van Der Gaag DJ, Battisti A, Mas H, Rigling D, Faccoli M, Mikulová A, Stergulc F, Christoph E, Mosbach-Schulz O, Streissl F, Gonthier P.   +30 more
europepmc   +2 more sources

Grafting Fraser Fir (Abies fraseri): Effect of Grafting Date, Shade, and Irrigation [PDF]

HortScience, 2010
Grafting fraser fir [Abies fraseri (Pursh) Poir.] scions onto rootstocks of turkish fir (Abies bornmuelleriana Mattf.) is a strategy used by some Christmas tree growers in the southern Appalachian Mountains of North Carolina to reduce losses by phytophthora root rot caused by Phytophthora cinnamomi Rands.
Haley Hibbert-Frey, John Frampton, Frank A. Blazich, L. Eric Hinesley   +3 more
openaire   +1 more source

A phytosociological survey of the boreal forest (Vaccinio-Piceetea) in North America [PDF]

, 1998
A survey of syntaxa of vegetation of North American boreal forests (class Vaccinio-Piceetea) is presented. This phytosociological survey, carried out combining the Braun-Blanquet method with numerical syntaxonomical analyses (cluster and correspondence
Aguirre, J.L., Cruz Rot, Marcelino de la, Peinado, M.   +2 more
core   +2 more sources

Results of Czech-American cooperation in interspecific fir hybridization in 2008 and 2009

Journal of Forest Science, 2011
This Czech-American research collaboration is investigating interspecific hybridization among various fir species produced via control pollination. Its aim is the development of newly bred material for specific needs of Christmas tree production.
J. Stejskal, J. Kobliha, J. Frampton
doaj   +1 more source