Download or read book Root Form of Planted White Spruce Picea Glauca Moench Voss Seedlings in Eastern Manitoba written by S. Segaran and published by Tree Improvement and Forest Genetics Program. This book was released on 1979 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Growth and Development of Styroplug White Spruce Picea Glauca Moench Voss Seedling Roots written by Anne Moya Johnson-Flanagan and published by . This book was released on 1985 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Development of Roots and Root Systems in White Spruce Picea Glauca Moench Voss Seedlings and the Influence of Cultural Treatments on Root Morphology Anatomy and the Capacity to Conduct Water written by Marek J. Krasowski and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Root development in Picea glauca seedlings was studied anatomically during the first year after germination. The cyclic pattern of elongation of individual roots was established about three months after germination. With progressing development, root hairs gradually diminished and colonization of roots by mycorrhizal fungi increased. The development of primary tissues in long roots, relative to the distance from the root tip, appeared to be related to their rate of root elongation. In these roots, the development of Casparian bands in the endodermis often occurred several millimeters away from the root tip. In elongating short roots, endodermal cells attained their primary state only 2-4 cells away from the proximal part of the apical meristem. In non-elongating roots, the secondary-state endodermis was connected to the metacutis just above the apical meristem. The development of Casparian bands was always prior to the maturation of the first xylem elements. The endodermis did not develop past the secondary state. Through the presence of passage cells, it remained functional until its disruption by secondary growth. Low frequency of plasmodesmata in the endodermis indicated that the plasma membrane - cell wall - plasma membrane type of transport was the main means of molecule exchange between the cortex and the stele in white spruce roots. Undifferentiated tissues of the root near the apical meristem were almost impermeable to fluorescent dye tracers Sulforhodamine G and fluorescein diacetate. The metacutis and the endodermis at the primary and secondary state were impermeable to the apoplastic tracer Sulforhodamine G. Roots and root systems were structurally and physiologically affected by cultural treatments such as pruning and fertilizer application. Roots of seedlings grown at low nitrogen (N) supply were thin and their tracheids were narrow. Excess N did not significantly increase root diameter and tracheid dimensions, compared to the optimum supply. Dimensions of bordered pits were not significantly affected by the N level. The secondary development in roots advanced basipetally but exceptions were found indicating that cambial growth of roots could vary along the root regardless of the position relative to the root tip. Seedlings with different root systems modified by nursery culture exhibited different pattems of root growth after planting. Root elongation and root surface area increases immediately after planting were greater in container-grown than in mechanically box-pruned seedlings but this was unrelated to the longer-term performance of these seedlings. The initially low hydraulic conductance of root systems in box-pruned seedlings increased significantly 6-8 weeks after planting while it remained unchanged or declined in container-grown seedlings. Root pressure, comparable to that reported for angiosperm seedlings, was found in white spruce seedlings during the first few weeks after planting. This is contrary to the general notion that conifers do not develop notable root pressure. The initiation and elongation of roots in unfertilized organic compartments was poor compared to root growth in unfertilized mineral compartments, especially in mechanically pruned seedlings whose roots proliferated in the latter compartments. The growth of roots in the organic substrates was enhanced by the addition of slow-release fertilizer to that substrate. The growth response of roots to slow-release fertilizer added to the mineral substrate was restricted to that compartment but root growth in both soil compartments was affected by the addition of slow-release fertilizer to the organic substrate. Root development in different types of planting stock was differently affected by the soil substrate type and the addition of the slow release fertilizer.
Download or read book Development of Provenance Seed Zones in Manitoba for Black Spruce Jack Pine and White Spruce written by S. Segaran and published by [Winnipeg]: Manitoba. Department of Mines, Natural Resources and Environment, Forestry Division, Forest Management Section, Tree Improvement and Forest Genetics Program. This book was released on 1979 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Development of Roots and Root Systems in White Spruce Picea Glauca Moench Voss Seedlings and the Influence of Cultural Treatments on Root Morphology Anatomy and the Capacity to Conduct Water written by and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Conditioning White Spruce Picea Glauca Moench Voss Transplants for Overwinter Storage by Root Pruning and Wrenching written by Lisa Jean Buse and published by . This book was released on 1987 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Comparative Performance of Bareroot and Container grown Seedlings written by Peter A. Menes and published by Sault Ste. Marie : Ontario Ministry of Natural Resources. This book was released on 1996 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt: Annotated bibliography of 213 papers, reports, proceedings, and abstracts written 1969-95 that describe trials established in Canada and the United States, comparing the performance of bareroot and container stock types. Each entry provides a separate indication of species involved, stock types, and performance attributes, if available. Includes author, species, and subject indexes.
Download or read book Comparative Genotypic Stability Parameters in Provenance Selection as Applied to Twenty Local Provenances of Black Spruce Picea Mariana Mill B S P written by S. Segaran and published by . This book was released on 1979 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effect of Soil and Vegetation on Growth of Planted White Spruce written by Donald A. Perala and published by . This book was released on 1987 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Local Provenance Studies of White Spruce Picea Glauca Moench VOSS in the Province of Manitoba written by S. Segaran and published by . This book was released on 1977 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ecology of Young White Spruce written by Roy Frederick Sutton and published by . This book was released on 1968 with total page 1058 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book FRDA Report written by and published by . This book was released on 1994 with total page 558 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Simulation Model for the Artificial Regeneration Process in the Great Lakes Region written by Keith Lin Belli and published by . This book was released on 1986 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book National Union Catalog written by and published by . This book was released on with total page 1030 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes entries for maps and atlases.
Download or read book Monographic Series written by Library of Congress and published by . This book was released on 1981 with total page 768 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ecophysiology of White Spruce Picea Glauca Moench Voss Regeneration written by Edward Carter Tear and published by . This book was released on 1979 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The importance of light and seedbed type were evident for germination success and seedling survival of white spruce [ Picea glauca (Moench) Voss] in the field. Under forest canopy cover, seedbeds of exposed mineral soil had higher rates of germination than seedbeds with competing vegetation removed or on seedbeds with competing vegetation intact. The shade offered by the forest canopy and the seedbed of mineral soil probably maintain adequate soil moisture conditions to allow good germination. Microsites which had mineral soil exposed and which were only partially shaded enhanced white spruce seedling survival. These microsites probably did not experience severe fluctuations in soil moisture content which may be a major cause of seedling mortality in white spruce. Time of year, light and watering do not act independently on retention, distribution or partitioning of recently photoassimilated 14 C02. Seasonal patterns of each are influenced by either light or watering or both. Spruce seedlings grown under water stress or "full-light" conditions retain less 14 C than those seedlings grown under no water stress or grown under low light. The effects of light or watering regime are more pronounced on first-year seedlings than on second-year seedlings. Generally, second-year seedlings translocate a greater percentage of recently assimilated 14 C to the roots than do first-year seedlings. The percent of 14 C translocated to the roots varies with time of year and is affected by the interactive effects of light and watering. Between June and September an increasing proportion of assimilated carbon-14 is channelled into storage rather than into structural components. Deviations from this pattern can occur as a result of changes in light and watering. Xylem pressure potential can be used to estimate white spruce seedling survival. The relationship between xylem pressure potential and survival varied with soil type, probably due to differences in hygroscopic properties. The younger the seedling the more sensitive it is to drying soils.
