Download or read book Cytokinins in Developing Buds and Tissue Cultures of Scots Pine and Their Role in Xylem Production of Loblolly Pine written by Juhani Häggman and published by . This book was released on 1991 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Forest Development in Cold Climates written by John Alden and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 565 pages. Available in PDF, EPUB and Kindle. Book excerpt: As forests decline in temperate and tropical climates, highly-developed countries and those striving for greater economic and social benefits are beginning to utilize marginal forests of high-latitude and mountainous regions for resources to satisfy human needs. The benefits of marginal forests range from purely aesthetic to providing resources for producing many goods and services demanded by a growing world population. Increased demands for forest resources and amenities and recent warming of high latitude climates have generated interest in reforestation and afforestation of marginal habitats in cold regions. Afforestation of treeless landscapes improves the environment for human habitation and provides for land use and economic prosperity. Trees are frequently planted in cold climates to rehabilitate denuded sites, for the amenity of homes and villages, and for wind shelter, recreation, agroforestry, and industrial uses. In addition, forests in cold climates reduce the albedo of the earth's surface in winter, and in summer they are small but significant long-lived sinks for atmospheric carbon dioxide. Finally, growth and reproductive success of forests at their geographic limits are sensitive indices of climatic change. As efforts to adapt forests to cold climates increase, however, new afforestation problems arise and old ones intensify. Austral, northern, and altitudinal tree limits are determined by many different factors. Current hypotheses for high-latitude tree limits are based on low growing-season temperatures that inhibit plant development and reproduction.
Download or read book Production Tyrosine Sulphation and Processing of Type III Procollagen in Cultured Human Fibroblasts and MG 63 Cells written by Arja Jukkola and published by . This book was released on 1991 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Acta Forestalia Fennica written by and published by . This book was released on 1992 with total page 638 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Structure and Chromosomal Localization of the Human Alpha1 XIII Collagen Gene written by Liisa Tikka and published by . This book was released on 1991 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geographical Patterns and Local Processes in Holarctic Breeding Bird Communities written by Mikko Mönkkönen and published by . This book was released on 1991 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Model and Field Studies of Direct Current Resistivity Measurements with the Combined half Schlumberger Array AMN MNB written by Teuvo Pernu and published by . This book was released on 1991 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Type IV Collagenases written by Pirkko Huhtala and published by . This book was released on 1991 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tissue Culture in Forestry written by J.M. Bonga and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: 2. IMPORTANCE OF NITROGEN METABOLISM 2. 1. Range of naturally occurring nitrogenous components in forest trees 2. 2. Gene expression and mapping 2. 3. Metabolic changes in organized and unorganized systems 2. 4. Nitrogen and nutrition 2. 5. Aspects of intermediary nitrogen metabolism 3. NITROGEN METABOLISM IN GROWTH AND DEVELOPMENT 3. 1. Precultural factors 3. 2. Callus formation 3. 3. Cell suspensions 3. 3. 1. Conifers 3. 3. 2. Acer 3. 4. Morphogenesis 3. 4. 1. Nitrogen metabolism of natural embryos 3. 4. 2. Somatic embryogenesis 3. 4. 2. 1. Sweetgum (Liquidambar styraciflua) 3. 4. 2. 2. Douglar-fir and loblolly pine 3. 4. 3. Organogenesis 4. OUTLOOK 11. CARBOHYDRATE UTILIZATION AND METABOLISM - T. A. Thorpe 325 1. INTRODUCTION 2. NUTRITIONAL ASPECTS 3. CARBOHYDRATE UPTAKE 4. CARBOHYDRATE METABOLISM 4. 1. Sucrose degradation 4. 2. Metabolism of other carbon sources 4. 3. Hexose mobilization and metabolism 4. 3. 1. Cell cycle studies 4. 3. 2. Growth studies 4. 3. 3. Organized development 4. 4. Cell wall biogenesis 4. 4. 1. Primary cell walls 4. 4. 2. Cell wall turnover 4. 4. 3. Secondary cell walls 4. 5. Carbon skeleton utilization 5. OSMOTIC ROLE 6. CONCLUDING THOUGHTS 369 12. THE USE OF IN VITRO TECHNIQUES FOR GENETIC MODIFICATIO~FOREST TREES - E. G. Kirby 1. INTRODUCTION 2. IN VITRO SELECTION 2. 1. Natural variation 2. 2. Induction of variation 2. 3. Selection techniques 2. 4. Plant regeneration 2 . • 5. Applications x 3. SOMATIC HYBRIDIZATION 3. 1.
Download or read book Agrindex written by and published by . This book was released on 1994 with total page 992 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography of Agriculture written by and published by . This book was released on 1991 with total page 1810 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography of Agriculture written by and published by . This book was released on 1973-07 with total page 912 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Attributes of Trees as Crop Plants written by Melvin G. R. Cannell and published by . This book was released on 1985 with total page 618 pages. Available in PDF, EPUB and Kindle. Book excerpt: Domestication. Perspectives on the evolutionary history of tree crops. The basis of selection, management and evaluation of multipurpose trees - an overview. Forest tree breeding and fruit tree breeding: strategies, achievements and constraints. Strategies for optimizing the yield of tree crops in suboptimal environments. Tree growth at cool temperaturea and prospects for improvement by breeding. The ideotype concept applied to forest trees. Definition and exploitation of forest tree ideotypes in Finland. The capacity for vegetative propagation in trees. The vegetative structure. Biometrical, structural and physiological relationships among tree parts. Dry matter partitioning in tree crops. Forest productivity in relation to carbon partitioning and nutrient cycling: a mathematical model. Prospects for manipulating vascular-cambium productivity and xylem-cell differentiation. Branching, crown structure and the control of timber production. Trees as producers of exudates and extractives. Trees as producers of fuel. Trees as fodder crops. Roots, symbionts and soils. Roots as a component of tree productivity. Improving tree crops using micro-organisms in designed systems. Trees as soil improvers in the humid tropics?. Exploiting tree crop-symbiont specificity. Flowering and fruiting. Promotion of flowering in the crops: different mechanisms and techniques, with special reference to conifers. Variability in flower initiation in forest trees. Reproduction behaviour of fruit tree crops and its implications for the manipulation of fruit set. Some attributes of nut-bearing trees of temperate forest origin. Trees in stands. Future fruit orchard design: economics and biology. Transpiration and assimilation of tree and agricultural crops: the 'omega factor'. The competition process in forest stands. Forest canopy design: biological models and management implications. Future forest design: economic aspects. Wood properties, and future requirements for wood products.
Download or read book Growth Control in Woody Plants written by Theodore T. Kozlowski and published by Elsevier. This book was released on 1997-01-21 with total page 658 pages. Available in PDF, EPUB and Kindle. Book excerpt: The processes and mechanisms that control the growth of woody plants are of crucial importance for both economic and biological reasons. The comprehensive coverage of Growth Control in Woody Plants includes discussion of the growth controlling factors in both reproductive structures (flowers, fruit, seeds, pollen, etc.) and vegetative organs (stems, branches, leaves, and roots). Other major topics covered include seed germination, seedling growth, physiological and environmental regulation of growth, cultural practices, and biotechnology.This comprehensive treatment of the many factors that control the growth of woody plants can serve both as a valuable text and as a frequently used reference.* Includes comprehensive representation of a broad subject* Provides thorough bibliographic coverage * Well illustrated* Serves as a vital companion to Physiology of Woody Plants, Second Edition
Download or read book In Vitro Culture of Trees written by J.M. Bonga and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 249 pages. Available in PDF, EPUB and Kindle. Book excerpt: Woody plants provide many challenges to the tissue culturist. Although there are many excellent tissue culture books and manuals available, these are generally strongly biased towards herbacious crops. Consequently, they often do not pay sufficient attention to the problems that specifically apply to in vitro culture of tree species. Culture of the latter often poses problems which are either absent or of lesser significance when culturing herbacious species. When trees in the field are used as explant source, the problems can be especially severe. For example, the physiological condition of the explants is difficult to control because of variation in weather and biotic factors. Furthermore, it is often difficult to obtain explants free of contaminants from field grown trees. Lack of genetic uniformity and maturation are additional problems one often has to deal with when culturing tree cells or tissues. These problems are emphasized in this text. In vitro culture of trees is not viewed in isolation. It is considered in conjunction with breeding, traditional cloning and other common tree improvement techniques. The text discusses theoretical as well as practical aspects of the in vitro culture of trees.
Download or read book Dendrology Cones Flowers Fruits and Seeds written by Marilena Idžojtić and published by Academic Press. This book was released on 2019-06-28 with total page 800 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dendrology: Cones, Flowers, Fruits and Seeds offers a comprehensive overview of the morphology of reproductive organs of woody plants of Europe in one resource. The book contains 2020 woody taxa (845 species, 58 subspecies, 38 varieties, 13 forms, 40 hybrids and 1026 cultivars), belonging to 400 genera and 121 families. It includes 447 taxa of trees and shrubs that are autochthonous in Europe and numerous ornamental species that originate from North America, Asia, South America, Australia and Africa, along with invasive woody species. Accompanied by thousands of original photographs, the book is designed to efficiently guide the reader to accurate identification. Other features include taxa organized in alphabetical order of their botanical names, flowering and fruiting time, mode of fruit or seed dispersal, and distribution range, making this a must-have reference for students and researchers in dendrology, botany, forestry, forest management and conservation, arboriculture and horticulture. - Includes 2,020 taxa of trees and shrubs important for the European dendrology - Provides detailed descriptions of reproductive organs and data on the reproductive biology of the described taxa - Contains 6,644 original, high-quality photographs of habits, cones, flowers, fruits and seeds
Download or read book Plant Aging written by Roberto Rodríguez and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 425 pages. Available in PDF, EPUB and Kindle. Book excerpt: For many, the terms aging, maturation and senescence are synonymous and used interchangeably, but they should not be. Whereas senescence represents an endogenously controlled degenerative programme leading to plant or organ death, genetiC aging encompasses a wide array of passive degenerative genetiC processes driven primarily by exogenous factors (Leopold, 1975). Aging is therefore considered a consequence of genetiC lesions that accumulate over time, but by themselves do not necessarily cause death. These lesions are probably made more severe by the increase in size and complexity in trees and their attendant physiology. Thus while the withering of flower petals following pollination can be considered senescence, the loss of viability of stored seeds more clearly represents aging (Norden, 1988). The very recent book "Senescence and Aging in Plants" does not discuss trees, the most dominant group of plants on the earth. Yet both angiospermic and gymnospermic trees also undergo the above phenomena but less is known about them. Do woody plants senesce or do they just age? What is phase change? Is this synonymous with maturation? While it is now becoming recognized that there is no programmed senescence in trees, senescence of their parts, even in gymnosperms (e. g. , needles of temperate conifers las t an average of 3. 5 years), is common; but aging is a readily acknowledged phenomenon. In theory, at least, in the absence of any programmed senescence trees should -live forever, but in practice they do not.
