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Tuesday, July 28, 2020 | History

4 edition of Variation in growth of Engelmann spruce seedlings under selected temperature environments found in the catalog.

Variation in growth of Engelmann spruce seedlings under selected temperature environments

by Wayne D. Shepperd

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Published by USDA Forest Service, Rocky Mountain Forest and Range Experiment Station in [Fort Collins, Colo.] .
Written in English

    Subjects:
  • Engelmann spruce,
  • Seedlings

  • Edition Notes

    StatementWayne D. Shepperd
    SeriesResearch note RM -- 404
    ContributionsRocky Mountain Forest and Range Experiment Station (Fort Collins, Colo.)
    The Physical Object
    Pagination3 p. :
    ID Numbers
    Open LibraryOL13605602M

    Soil temperature as well as air temperature affects photosynthesis, with the rate of CO 2 uptake decreasing at low temperature (Figs. and ). Low rates of photosynthesis of Engelmann spruce were directly related to low (night) air and soil temperatures, but at different times during the early summer growth period. Plant material. Plant material for this study came from two contiguous white spruce (Picea glauca [Moench] Voss) trials in a single site in central Alberta, Canada (55°17′N, °10′W).Both trials belong to a provenance trial experiment described in detail by Rweyongeza et al. ().One of the trials is planted with provenances from only the province of Alberta, while the other trial.

    Cambridge Core - Plant Sciences - Seedling Ecology and Evolution - edited by Mary Allessio Leck. Abstract. The response of xylem pressure potential of Engelmann spruce (Picea engelmannii Engelm.) to environmental factors was studied in the natural subalpine were analyzed in the context of a leaf water potential model based upon the van den Honert model for water transport through the soil-plant-atmosphere continuum.

    Embryo growth was, however, initiated in seeds incubated at 23 °C, but was not completed when they remained at this temperature condition for 32 weeks. When seeds were transferred to 5 °C after 8 weeks at 23 °C, approx. 5 % of the seeds attained the critical .   In a growth chamber study of Engelmann spruce seedlings under 30 different combinations of day and night temperatures, the greatest height and root growth, and top and root dry matter production was with a diurnal variation of 19° C (66° F) (air and soil) day temperatures and 23° C (73° F) (air and soil) night temperatures (45).


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Variation in growth of Engelmann spruce seedlings under selected temperature environments by Wayne D. Shepperd Download PDF EPUB FB2

Variation in growth of Engelmann spruce seedlings under selected temperature environments. [Fort Collins, Colo.]: USDA Forest Service, Rocky Mountain Forest and Range Experiment Station, [] (OCoLC) An illustration of an open book. Books. An illustration of two cells of a film strip.

Video An illustration of an audio speaker. Variation in growth of Engelmann spruce seedlings under selected temperature environments Item Preview remove-circlePages: 8. Variation in growth of Engelmann spruce seedlings under selected temperature environments / By Wayne D.

Shepperd and Colo.) Rocky Mountain Forest. Shepperd, Wayne D. Variation in growth of Engelmann spruce seedlings under selected temperature environments. USDA Forest Service, Research Note RM Rocky Mountain Forest and Range Experiment Station, Fort Collins, CO. 3 p. Shepperd, Wayne D.

Seeds should be soaked in water for 24 hours then chilled for 6 to 8 weeks at 2 degrees C. Seed life. Engelmann spruce seeds can be stored for 10 to 20 years.

Recommended seed storage conditions. Seeds of Engelmann spruce can safely be stored in cones under field conditions for up to 5 months.

garden seedlings. Hybrid index differences between natural and selected seedlings within breeding zones were small in Alberta (average +2%), but larger and more vari-able in BC (average −7%, range −24% to +1%), slightly favoring P. glauca ancestry. The average height growth gain of selected seedlings over natural seedlings within breed.

Temperature and time-related variation of root growth in some conifer tree species Picea glauca and Engelmann spruce P. engelmannii, each planted at a single location in the interior of. Engelmann spruce growth is positively correlated with June–August temperature, but unusually warm July–August temperatures are associated with reduced growth the following year.

Temporal variations in cold sensitivity of root growth in cold-stored white spruce seedlings. Parental environment aftereffects on germination, growth and adaptive traits in selected white spruce families. Full Text; PDF ( K) PDF-Plus ( K) Citing articles; Soil moisture controls Engelmann spruce (Picea engelmannii) seedling carbon balance and survivorship at timberline in Utah, USARichard A.

Gill, 1 Colin S. Campbell, 2 Sarah M. Karlinsey 1 1 Department of Biology, Brigham Young University, Provo, UTUSA. 2 Decagon Devices, Inc., NE Hopkins Ct., Pullman, WAUSA. Two of the major uncertainties in forecasting future terrestrial sources and sinks of CO2 are the CO2-enhanced growth response of forests and soil warming effects on net CO2 efflux from forests.

Carbon dioxide enrichment of tree seedlings over time periods less than 1 yr has generally resulted in enhanced rates of photosynthesis, decreased respiration, and increased growth, with minor.

Interior spruce is a hybrid species complex composed of white spruce, Engelmann spruce, and their hybrids, distributed across a wide area in western Canada.

In both interior spruce and allopatric. Soil temperature as well as air temperature affects photosynthesis, with the rate of CO 2 uptake decreasing at low temperature (Figs.

and ).Low rates of photosynthesis of Engelmann spruce were directly related to low (night) air and soil temperatures, but at different times during the early summer growth period.

In this study we evaluated growth, nutritional status and variation in photosynthetic traits before bud break of seedlings of eight distinct white spruce seed sources 4 years after outplanting.

Overall, this study revealed that the eight seed orchards have similar plasticity as indicated by the lack of interaction between sites and seed orchards. field plantation of a nationwide Engelmann spruce seed source study, established in the late 's by the USDA Forest Service, North Central Forest Experiment Station.

The purpose of the original study was to deter­ mine the nature and range of genetic variation in Engelmann spruce. The. Physiological recovery of freezer-stored white and Engelmann spruce seedlings planted following different thawing regimes. New Forests Dang, QL, CY Xie, C Ying & RD Guy ().

Genetic variation of ecophysiological traits in red alder (Alnus rubra Bong.) Can J For Res Moloney, AH, RD Guy & DB Layzell (). Picea glauca (Moench) Voss. White Spruce. Pinaceae -- Pine family. Hans Nienstaedt and John C. Zasada. White spruce (Picea glauca), also known as Canadian spruce, skunk spruce, cat spruce, Black Hills spruce, western white spruce, Alberta white spruce, and Porsild spruce, is adapted to a wide range of edaphic and climatic conditions of the Northern Coniferous Forest.

taller Styroblock-8 seedlings grew faster over the five-year test period”. First- and second-year survival of containerized Engelmann spruce in relation to initial seedling size. Engelmann spruce grown in cm3 Leach cells were divided into six RCD classes prior to planting on a high elevation site in Utah.

The strong shade tolerance of Engelmann spruce allows it to occur both as a persistent long-lived seral species and as a major climax species. Engelmann spruce will grow steadily for years, long after the growth of most associated tree species slows down. Dominant spruces are often years old and trees years old are not.

Variation within the species: trees with similar color tend to occur in small, local populations, suggesting that color traits are under genetic control.

The color variation does not conform to a clinal pattern. Most other variable features in blue spruce (e.g., physiology, early survival, growth rate) similarly do. seedlings in nursery environments.

Long-term tests are planted, with nursery seedlings, at several locations to reflect the range of environments, in the region under study. Seed transfer recommendations are made after assessing survival, growth, and tree development for many years.

The genetic mapping approach utilizes the.To examine where seedlings were spatially random, clustered, or uniform, we analyzed univariate and bivariate versions of the pair correlation function, g (r), on the point patterns of seedlings and Engelmann spruce snags across twenty‐two plots (16 main plots and 6 supplementary plots; Fig.

1) together, and also in three CMD categories.Tree-ring studies will be applied in the future to problems of temperate and mesic environments, and to problems of physiological, genetic, and anatomical variations within and among trees. New developments in the use of X-ray techniques will facilitate the .