No data available that match "Pseudotsuga"

*  Pseudotsuga menziesii var. menziesii
SPECIES: Pseudotsuga menziesii var. menziesii AUTHORSHIP AND CITATION : Uchytil, Ronald J. 1991. Pseudotsuga menziesii var. ... ABBREVIATION : PSEMENM SYNONYMS : Pseudotsuga menziesii var. viridis (Schwerin) Franco Pseudotsuga taxifolia Lamb. SCS PLANT ... SPECIES: Pseudotsuga menziesii var. menziesii IMMEDIATE FIRE EFFECT ON PLANT : Trees: Crown fires commonly kill all trees over ... SPECIES: Pseudotsuga menziesii var. menziesii WOOD PRODUCTS VALUE : Coast Douglas-fir is one of the worlds best timber ...
*  Category:Pseudotsuga menziesii - Wikimedia Commons
Pseudotsuga taxifolia (Lamb.) Britton, nom. illeg.. Pseudotsuga douglasii (Sabine ex D.Don) Carrière. Pseudotsuga mucronata ( ... Pages in category "Pseudotsuga menziesii". This category contains only the following page. ... Media in category "Pseudotsuga menziesii". This category contains only the following file. ... Retrieved from "https://commons.wikimedia.org/w/index.php?title=Category:Pseudotsuga_menziesii&oldid=210331470" ...
*  Pseudotsuga menziesii ( Brevifolia Douglas Fir ) | Backyard Gardener
This dwarf cultivar is pyramidal in shape and has dense green foliage. The branching is horizontal with tips that grow upward. Needles are flat, soft and
*  Pseudotsuga menziesii ( Fretsii Douglas Fir ) | Backyard Gardener
This cultivar is pyramidal in shape and has open, short branches. Needles are short, soft and thin with blunt tips. This plant enjoys full sun and a moist,
*  Pseudotsuga menziesii ( Dumosa Douglas Fir ) | Backyard Gardener
This cultivar is a dwarf and is erect and upright. Needles are contorted, congested, soft, short and thin. Branching is irregular. This plant enjoys full
*  Pseudotsuga menziesii ( Globosa Douglas Fir ) | Backyard Gardener
This dwarf cultivar is spherical in shape and has green foliage. Needles are flat, soft and thin, and the branching is open. This plant enjoys full sun and
*  Pseudotsuga menziesii ( Aurea Douglas Fir ) | Backyard Gardener
This cultivar is pyramidal in shape and has yellow to green foliage with yellow new growth. Needles are flat, soft and thin. This plant enjoys full sun and
*  Pseudotsuga menziesii ( Holmstrup Douglas Fir ) | Backyard Gardener
This cultivar is cone-like in shape and has congested dark green foliage. Needles are flat, soft and thin. Branching is typically upward growing. This plan
*  Pseudotsuga menziesii ( Idaho Weeper Douglas Fir ) | Backyard Gardener
This weeping cultivar is irregular in shape but upright growing. Branches are pendulous. Needles are flat, soft and thin. This plant enjoys full sun and a
*  Pseudotsuga - Wikipedia
Japanese Douglas-fir Pseudotsuga sinensis Dode - Chinese Douglas-fir Pseudotsuga sinensis var. sinensis Pseudotsuga sinensis ... Pseudotsuga macrocarpa (Vasey) Mayr - bigcone Douglas-fir - southern California Pseudotsuga menziesii (Mirb.) Franco - western ... Gymnosperm Database - Pseudotsuga' Arboretum de Villardebelle: Images of Pseudotsuga species cones. ... menziesii - coast Douglas-fir Pseudotsuga lindleyana (Roezl) Carrière - Mexican Douglas-fir Pseudotsuga brevifolia W.C.Cheng & ...
*  Pseudotsuga sinensis - Wikipedia
Pseudotsuga sinensis var. wilsoniana, Taiwan Douglas-fir, is sometimes treated as its own species, Pseudotsuga wilsoniana. This ... Pseudotsuga sinensis (Chinese Douglas-fir; in Chinese 黃杉, pinyin romanization: huáng shān) is a species of conifer in the ... "Pseudotsuga sinensis at Gymnosperm Database". The Gymnosperm Database. Luu, Nguyen Duc To; Thomas Ian, Philip (2004). Cay La ... "Pseudotsuga sinensis". Flora of China. Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA. ...
*  Pseudotsuga japonica - Wikipedia
Media related to Pseudotsuga japonica at Wikimedia Commons Data related to Pseudotsuga japonica at Wikispecies. ... Pseudotsuga japonica, the Japanese Douglas-fir, is a species of conifer in the pine family, Pinaceae, that is endemic to Japan ... "Pseudotsuga japonica". Germplasm Resources Information Network (GRIN). Agricultural Research Service (ARS), United States ... Japanese calls this tree 'Togasawara (トガサワラ)'.[citation needed] Katsuki, T.; Luscombe, D. & Farjon, A. (2013). "Pseudotsuga ...
*  Pseudotsuga macrocarpa - Wikipedia
Some hybrids of Pseudotsuga macrocarpa (Bigcone Douglas-fir) × Pseudotsuga menziesii (Coast Douglas-fir) show promise for ... Pseudotsuga macrocarpa (bigcone Douglas fir, bigcone spruce) Conifers.org, Gymnosperm Database: Pseudotsuga macrocarpa USFS ... Pseudotsuga macrocarpa typically grows from 15-30 m (49-98 ft) in height and 0.5-1.5 m (1.6-4.9 ft) in trunk diameter. The ... Pseudotsuga macrocarpa is a Douglas-fir. The name "bigcone spruce", though confusing as it is not a spruce species, is often ...
*  Argyresthia pseudotsuga - Wikipedia
Argyresthia pseudotsuga is a moth of the Yponomeutidae family. It is found in North America, including Washington. Adults ... The larvae feed on Pseudotsuga menziesii. They mine the twigs and tips of their host plant. The larvae enter the twigs at a ...
*  Pseudotsuga lindleyana - Wikipedia
Pseudotsuga lindleyana, commonly known as the Mexican Douglas-fir, is a conifer in the genus Pseudotsuga that is endemic to ... Data related to Pseudotsuga lindleyana at Wikispecies The Gymnosperm Database: Pseudotsuga lindleyana. ... Pseudotsuga lindleyana is native to the Sierra Madre Occidental, Sierra Madre Oriental, and scattered mountains as far south as ... Earle, C.J. "The Gymnosperm Database: Pseudotsuga lindleyana". Retrieved 9 January 2018. Gugger, Paul F.; González-Rodríguez, ...
*  Pseudotsuga menziesii var. glauca - Wikipedia
"Pseudotsuga menzesii", GlobalTwitcher.com, ed. N. Stromberg [1] Little, E. L. (1952). "The genus Pseudotsuga (Douglas-fir) in ... Pseudotsuga menziesii var. glauca, or Rocky Mountain Douglas-fir, is an evergreen conifer native to the interior mountainous ... Rocky Mountain Douglas-fir is most commonly treated as a variety (Pseudotsuga menziesii var. glauca), but has also been called ... Further west towards the Pacific coast, it is replaced by the related coast Douglas-fir (Pseudotsuga menziesii var. menziesii ...
*  Pseudotsuga menziesii var. menziesii - Wikipedia
Pseudotsuga menziesii var. menziesii, also known as coast Douglas-fir, Oregon pine, or Douglas spruce, is an evergreen conifer ... "Pseudotsuga menziesii var. menziesii". www.fs.fed.us. Retrieved 2017-10-26. Agee, James K (1993). Fire Ecology Ecology of the ... "Douglas-fir: Pseudotsuga menziesii". globalTwitcher.com. Archived from the original on 2009-01-13. McArdle, Richard E. (1930). ... "Pseudotsuga menziesii var. menziesii". Gymnosperm Database. Archived from the original on 2010-10-01. Retrieved March 17, 2013 ...
*  Constitutive versus heat and biotic stress induced BVOC emissions in Pseudotsuga menziesii
... Éva Joó, Jo Dewulf UGent, Crist ... 2011). Constitutive versus heat and biotic stress induced BVOC emissions in Pseudotsuga menziesii. ATMOSPHERIC ENVIRONMENT, 45( ... "Constitutive Versus Heat and Biotic Stress Induced BVOC Emissions in Pseudotsuga Menziesii." Atmospheric Environment 45 (22): ... "Constitutive Versus Heat and Biotic Stress Induced BVOC Emissions in Pseudotsuga Menziesii." ATMOSPHERIC ENVIRONMENT 45.22 ( ...
*  Uptake and translocation of manganese in seedlings of two varieties of Douglas fir (Pseudotsuga menziesii var. viridis and...
Geographic variation in winter drought resistance of Douglas fir (Pseudotsuga menziesii Mirb. Franco). Silvae Genetica. 30: 109 ... Uptake and translocation of manganese in seedlings of two varieties of Douglas fir (Pseudotsuga menziesii var. viridis and ... Nutrition status of Douglas fir (Pseudotsuga menziesii[Mirb] Franco) from Danish and German sites in comparison with the area ... Growth performance and reaction to biotic and abiotic factors of Douglas fir progenies (Pseudotsuga menziesii (Mirb) Franco). ...
*  Heritability and phenotypic and genetic correlations of coastal Douglas-fir (Pseudotsuga menziesii) wood quality traits
... ... Genetic control and relationships among coastal Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco var. menziesii) growth and ... Pseudotsuga menziesii) wood quality traits. Canadian Journal of Forest Research 38(6): 1536-1546. ...
*  Effect of red and far-red light upon growth of Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) seedlings
... Public Deposited ... The photoperiodic responses of Douglas-fir (Pseudotsuga menziesii (Mirb,) Franco) seedlings grown from seed collected at Salmon ...
*  IDEALS @ Illinois: In vitro establishment, shoot multiplication, and rooting of Pinus strobus, Pseudotsuga menziesii, and Thuja...
In vitro establishment, shoot multiplication, and rooting of Pinus strobus, Pseudotsuga menziesii, and Thuja occidentalis 'Hetz ... In vitro establishment, shoot multiplication, and rooting of Pinus strobus, Pseudotsuga menziesii, and Thuja occidentalis 'Hetz ... In vitro establishment, shoot multiplication, and rooting of Pinus strobus, Pseudotsuga menziesii, and Thuja occidentalis 'Hetz ... Pseudotsuga menziesii (Douglas fir) and Thuja occidentalis 'Hetz Wintergreen'.. The disinfestation of conifers was improved ...
*  Pseudotsuga macrocarpa synonyms, Pseudotsuga macrocarpa antonyms - FreeThesaurus.com
Antonyms for Pseudotsuga macrocarpa. 2 synonyms for Pseudotsuga macrocarpa: big-cone douglas fir, big-cone spruce. What are ... Pseudotsuga macrocarpa synonyms, Pseudotsuga macrocarpa antonyms - FreeThesaurus.com https://www.freethesaurus.com/Pseudotsuga+ ... Synonyms for Pseudotsuga macrocarpa. douglas fir of California having cones 4-8 inches long. Synonyms. *big-cone douglas fir ... a href='https://www.freethesaurus.com/Pseudotsuga+macrocarpa',Pseudotsuga macrocarpa,/a,. *Facebook ...

No data available that match "Pseudotsuga"

(1/37) Branch junctions and the flow of water through xylem in Douglas-fir and ponderosa pine stems.

Water flowing through the xylem from the roots to the leaves of most plants must pass through junctions where branches have developed from the main stem. These junctions have been studied as both flow constrictions and components of a hydraulic segmentation mechanism to protect the main axes of the plant. The hydraulic nature of the branch junction also affects the degree to which branches interact and can respond to changes in flow to other branches. The junctions from shoots of two conifer species were studied, with particular emphasis on the coupling between the downstream branches. Flow was observed qualitatively by forcing stain through the junctions and the resulting patterns showed that flow into a branch was confined to just part of the subtending xylem until a considerable distance below the junction. Junctions were studied quantitatively by measuring flow rates in a branch before and after flow was stopped in an adjacent branch and by measuring the hydraulic resistance of the components of the junction. Following flow stoppage in the adjacent branch, flow into the remaining branch increased, but considerably less than predicted based on a simple resistance analogue for the branch junction that assumes the two branches are fully coupled. The branches downstream from a junction, therefore, appear to be limited in their interconnectedness and hence in their ability to interact.  (+info)

(2/37) Ethanol synthesis and aerobic respiration in the laboratory by leader segments of Douglas-fir seedlings from winter and spring.

Stem segments from terminal leaders of Douglas-fir, Pseudotsuga menziesii (Mirb.) Franco, seedlings were sampled in mid-December when cambial cells were dormant. The residual, debudded leaders were resampled again in early May when the cambium was metabolically active. May stems had higher constitutive ethanol concentrations than December stems. This was not the result of cambial hypoxia generated by rapid spring respiration rates, because when aerobic respiration was stimulated by incubating the stems in air at 30 degrees C ethanol production was induced in December, but not in May. Rapid respiration rates at 30 degrees C may have depleted O(2) supplies and induced ethanol production in December stems because dormant, thick-walled cambial cells may be less permeable to CO(2) and O(2), compared with metabolically active, thin-walled cambial cells in May. December stem segments incubated in a N(2) atmosphere at 30 degrees C synthesized 1.8 times more ethanol than segments from May, most likely because spring growth had reduced the soluble sugars available for fermentation. CO(2) efflux from May stems (after 5.5 h of incubation at 30 degrees C) was equal to December stems per unit volume, but greater than December stems per unit surface area. N(2)-induced ethanol concentrations were positively related with CO(2) efflux per unit volume, indicating that rapidly respiring leaders can maintain rapid fermentation rates, provided soluble sugars are readily available. N(2)-induced ethanol and CO(2) efflux per unit volume declined with increasing leader diameter in both seasons, whereas there were no relationships between CO(2) efflux per unit surface area and diameter. Cambium physiology and phenology influence the induction of fermentation and concentrations of ethanol produced in terminal leaders of Douglas-fir, and probably other conifers as well. This needs to be considered when comparing fermentation among species, or comparing individuals from different seasons, or disparate ages within a species.  (+info)

(3/37) Methyl jasmonate-induced ethylene production is responsible for conifer phloem defense responses and reprogramming of stem cambial zone for traumatic resin duct formation.

Conifer stem pest resistance includes constitutive defenses that discourage invasion and inducible defenses, including phenolic and terpenoid resin synthesis. Recently, methyl jasmonate (MJ) was shown to induce conifer resin and phenolic defenses; however, it is not known if MJ is the direct effector or if there is a downstream signal. Exogenous applications of MJ, methyl salicylate, and ethylene were used to assess inducible defense signaling mechanisms in conifer stems. MJ and ethylene but not methyl salicylate caused enhanced phenolic synthesis in polyphenolic parenchyma cells, early sclereid lignification, and reprogramming of the cambial zone to form traumatic resin ducts in Pseudotsuga menziesii and Sequoiadendron giganteum. Similar responses in internodes above and below treated internodes indicate transport of a signal giving a systemic response. Studies focusing on P. menziesii showed MJ induced ethylene production earlier and 77-fold higher than wounding. Ethylene production was also induced in internodes above the MJ-treated internode. Pretreatment of P. menziesii stems with the ethylene response inhibitor 1-methylcyclopropene inhibited MJ and wound responses. Wounding increased 1-aminocyclopropane-1-carboxylic acid (ACC) oxidase protein, but MJ treatment produced a higher and more rapid ACC oxidase increase. ACC oxidase was most abundant in ray parenchyma cells, followed by cambial zone cells and resin duct epithelia. The data show these MJ-induced defense responses are mediated by ethylene. The cambial zone xylem mother cells are reprogrammed to differentiate into resin-secreting epithelial cells by an MJ-induced ethylene burst, whereas polyphenolic parenchyma cells are activated to increase polyphenol production. The results also indicate a central role of ray parenchyma in ethylene-induced defense.  (+info)

(4/37) Multinucleate storage cells in Douglas-fir (Pseudotsuga menziesii (Mirbel) Franco) and the effect of seed parasitism by the chalcid Megastigmus spermotrophus Wachtl.

Megagametophytes of Douglas-fir (Pseudotsuga menziesii (Mirbel) Franco) accumulated storage products following fertilization. As megagametophytes matured, the number of nuclei per cell rose, resulting in syncytial storage cells. Studies carried out on trees in France and Canada confirmed that such previously unreported, free nuclear cells were a normal part of late megagametophyte development. Unfertilized megagametophytes showed that some binucleate cells before degeneration resulted in empty seed. Insect parasitism prevented megagametophyte abortion in unfertilized ovules. Oviposition by a torymid chalcid wasp (Megastigmus spermotrophus Wachtl) early in megagametophyte development resulted in normal megagametophyte development. Around the time of plant egg maturation, binucleate and trinucleate cells were observed. As megagametophytes matured, multinucleate mature storage cells rich in proteins, lipids and starch were formed. The insect was able to induce identical nuclear behaviour in infested, unfertilized megagametophytes, as that of uninfested, fertilized megagametophytes.  (+info)

(5/37) Seed parasitism redirects ovule development in Douglas fir.

Many parasitic species of insects complete their entire development in seeds. They feed off storage reserves within the ovule. These reserves only normally accumulate in fertilized ovules. Consequently, female insects that oviposit their eggs directly into the plant ovule need to be able to select correctly, as unfertilized ovules of conifers normally become so-called empty seed. We provide clear evidence that in conifers, seed-parasitizing insects do not need to discriminate between fertilized and unfertilized plant ovules when ovipositing their eggs. A host-specific insect, the chalcid Megastigmus spermotrophus Wachtl (Hymenoptera: Torymidae), lays its eggs in ovules of Douglas fir (Pseudotsuga menziesii (Mirbel) Franco) before fertilization has taken place in the plant. Oviposition not only prevents the expected degeneration and death of unfertilized ovules, but it induces energy reserve accumulation. Ovules that would otherwise develop as empty seed are redirected in their development by the insect to provide food for the developing larvae. Instead of the insect exploiting normal events during seed development, the insect manipulates seed development for its own reproductive advantage.  (+info)

(6/37) Storage versus substrate limitation to bole respiratory potential in two coniferous tree species of contrasting sapwood width.

Two coniferous tree species of contrasting sapwood width (Pinus ponderosa L., ponderosa pine and Pseudotsuga menziesii Mirb., Douglas-fir) were compared to determine whether bole respiratory potential was correlated with available storage space in ray parenchyma cells and/or respiratory substrate concentration of tissues (total nitrogen content, N; and total non-structural carbohydrate content, TNC). An increment core-based, laboratory method under controlled temperature was used to measure tissue-level respiration (termed respiratory potential) from multiple positions in mature boles (>100-years-old). The most significant tissue-level differences that occurred were that N and TNC were two to six times higher for inner bark than sapwood, TNC was about two times higher in ponderosa pine than Douglas-fir and there was significant seasonal variation in TNC. Ray cell abundance was not correlated with sapwood respiratory potential, whereas N and TNC often were, implying that respiratory potential tended to be more limited by substrate than storage space. When scaled from cores to whole boles (excluding branches), potential net CO2 efflux correlated positively with live bole volume (inner bark plus sapwood), live bole ray volume, N mass, and TNC mass (adjusted R2 > or =0.4). This relationship did not differ between species for N mass, but did for live bole volume, live bole ray volume, and TNC mass. Therefore, N mass appeared to be a good predictor of bole respiratory potential. The differences in net CO2 efflux between the species were largely explained by the species' relative amounts of whole-bole storage space or substrate mass. For example, ponderosa pine's inner bark was thinner than Douglas-fir's, which had the greater concentration of ray cells and TNC compared with the sapwood. This resulted in ponderosa pine boles having 30-60% less ray volume and 10-30% less TNC mass, and caused ponderosa pine net CO2 efflux/ray volume and net CO2 efflux/TNC mass to be 20-50% higher than Douglas-fir. In addition, because inner bark respiratory potential was 2-25 times higher than that of sapwood, ponderosa pine's thinner inner bark and deeper sapwood (relative to Douglas-fir) caused its bole net CO2 efflux/live bole volume to be 20-25% lower than that of similarly-sized Douglas-fir trees.  (+info)

(7/37) Nucleotide diversity and linkage disequilibrium in cold-hardiness- and wood quality-related candidate genes in Douglas fir.

Nuclear sequence variation and linkage disequilibrium (LD) were studied in 15 cold-hardiness- and 3 wood quality-related candidate genes in Douglas fir [Pseudotsuga menziesii (Mirb.) Franco]. This set of genes was selected on the basis of its function in other plants and collocation with cold-hardiness-related quantitative trait loci (QTL). The single-nucleotide polymorphism (SNP) discovery panel represented 24 different trees from six regions in Washington and Oregon plus parents of a segregating population used in the QTL study. The frequency of SNPs was one SNP per 46 bp across coding and noncoding regions on average. Haplotype and nucleotide diversities were also moderately high with H(d) = 0.827 +/- 0.043 and pi = 0.00655 +/- 0.00082 on average, respectively. The nonsynonymous (replacement) nucleotide substitutions were almost five times less frequent than synonymous ones and substitutions in noncoding regions. LD decayed relatively slowly but steadily within genes. Haploblock analysis was used to define haplotype tag SNPs (htSNPs). These data will help to select SNPs for association mapping, which is already in progress.  (+info)

(8/37) Genecology of Douglas fir in western Oregon and Washington.

BACKGROUND AND AIMS: Genecological knowledge is important for understanding evolutionary processes and for managing genetic resources. Previous studies of coastal Douglas fir (Pseudotsuga menziesii var. menziesii) have been inconclusive with respect to geographical patterns of variation, due in part to limited sample intensity and geographical and climatic representation. This study describes and maps patterns of genetic variation in adaptive traits in coastal Douglas fir in western Oregon and Washington, USA. METHODS: Traits of growth, phenology and partitioning were measured in seedlings of 1338 parents from 1048 locations grown in common gardens. Relations between traits and environments of seed sources were explored using regressions and canonical correlation analysis. Maps of genetic variation as related to the environment were developed using a geographical information system (GIS). KEY RESULTS: Populations differed considerably for adaptive traits, in particular for bud phenology and emergence. Variation in bud-set, emergence and growth was strongly related to elevation and cool-season temperatures. Variation in bud-burst and partitioning to stem diameter versus height was related to latitude and summer drought. Seedlings from the east side of the Washington Cascades were considerably smaller, set bud later and burst bud earlier than populations from the west side. CONCLUSIONS: Winter temperatures and frost dates are of overriding importance to the adaptation of Douglas fir to Pacific Northwest environments. Summer drought is of less importance. Maps generated using canonical correlation analysis and GIS allow easy visualization of a complex array of traits as related to a complex array of environments. The composite traits derived from canonical correlation analysis show two different patterns of variation associated with different gradients of cool-season temperatures and summer drought. The difference in growth and phenology between the westside and eastside Washington Cascades is hypothesized to be a consequence of the presence of interior variety (P. menziessii var. glauca) on the eastside.  (+info)