Results 211 to 220 of about 31,422 (265)

Correction to: Microorganisms in the phyllosphere of Norway spruce controlling nitrous oxide dynamic. [PDF]

ISME Commun
europepmc   +1 more source

Genetic potential for N₂O metabolism in tree tissues: Insights into nitrogen cycling gene abundance and nosZ diversity across trees

Thiyagarasaiyar K, Paul D, Kerttula J, keski-karhu M, Soosaar K, Mander Ü, Hallin S, Machacova K, Pumpanen J, Siljanen HM.   +9 more
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Serbian Spruce is as Vulnerable as Sitka Spruce to Damage by the Sitka Spruce Weevil

Western Journal of Applied Forestry, 1992
Abstract Serbian spruce (Picea omorika) was first damaged naturally by the Sitka spruce weevil (Pissodes strobi) at about 15 years of age in an area on Vancouver Island where this weevil commonly attacks Sitka spruce (Picea sitchensis).
Michael A. Hulme, Allan F. Dawson
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Spruce Embryogenesis

2008
Somatic embryogenesis, the process in which embryos, similar in morphology to their zygotic counterparts, are induced to develop in culture from somatic cells, is a suitable model system for investigating the regulation of embryo development. Through this process, a large number of embryos at defined stages of development can easily be obtained ...
Sara, von Arnold, David, Clapham
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Afforestation of Lutz Spruce, Sitka Spruce, and Norway Spruce in the Vesteraalen Islands, Norway

1993
Tree species from Alaska and Canada have been used for afforestation in northern Norway since the late 1920s. Afforestation projects were small in the beginning because the performance of foreign species far north of their natural range was unknown.
Nils O. Kaasen, Gisle Skaret, Tore Kaasen   +2 more
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Norway spruce and spruce shoot aphid as indicators of traffic pollution

Environmental Pollution, 2000
Two-year-old Norway spruce (Picea abies (L.) Karst) seedlings were exposed to traffic emissions along roadsides with three different traffic densities and speed limits; highway, street and a quiet local road. The responses of the exposed seedlings as a host plant and those of spruce shoot aphid (Cinara pilicornis Hartig) were studied.
Viskari, E.-L., Kössi, S., Holopainen, Jarmo   +2 more
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Inheritance of plastids in interspecific hybrids of blue spruce and white spruce

Theoretical and Applied Genetics, 1989
Chloroplast DNA (cpDNA) was purified from blue spruce (Picea pungens Engelm.) and white spruce [P. glauca (Moench) Voss], and was digested with several different restriction endonucleases. Restriction fragment length polymorphisms (RFLPs) were identified that differentiated the cpDNA of both species.
M, Stine, B B, Sears, D E, Keathley
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The phenology of white spruce and the spruce budworm in northern Alberta

Canadian Journal of Forest Research, 1992
Studies on the development of spruce budworm (Choristoneurafumiferana (Clem.)) on white spruce (Piceaglauca (Moench) Voss) were conducted in northern Alberta in 1969 and again in 1990. The phenology of this insect and its host were described using stochastic models.
W.J.A. Volney, H.F. Cerezke
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Scopelophila ligulata (Spruce) Spruce.

2012
Nell'ambito della redazione di schede di assesment per la realizzazione di una lista rossa della flora vascolare e crittogamica italiana, viene presentata la scheda relativa a Scopelophila ligulata (Spruce) Spruce.
ALEFFI, Michele, TACCHI, Roberta
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Effectiveness of spruce budworm spraying in New Brunswick in protecting the spruce component of spruce–fir stands

Canadian Journal of Forest Research, 1984
Tree mortality and defoliation were examined in 45 spruce (Picea sp.) stands protected against damage by spruce budworm (Choristoneurafumiferana (Clem.)) and in 27 unprotected spruce stands in New Brunswick, and were related to tree, stand, and site characteristics.
David A. MacLean, A. Wayne Kline, Daniel R. Lavigne   +2 more
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