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Author:
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ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 584
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Book Description
Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 584
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Book Description
Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 792
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Book Description
Author:
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 1172
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Author:
Publisher:
ISBN:
Category : Dissertation abstracts
Languages : en
Pages : 596
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Author:
Publisher:
ISBN:
Category : Paper
Languages : en
Pages : 558
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Book Description
Author: Jud G. Isebrands
Publisher: CABI
ISBN: 1780641087
Category : Technology & Engineering
Languages : en
Pages : 700
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Book Description
Poplars and willows form an important component of forestry and agricultural systems, providing a wide range of wood and non-wood products. This book synthesizes research on poplars and willows, providing a practical worldwide overview and guide to their basic characteristics, cultivation and use, issues, problems and trends. Prominence is given to environmental benefits and the importance of poplar and willow cultivation in meeting the needs of people and communities, sustainable livelihoods, land use and development.
Author: F.J. Bigras
Publisher: Springer Science & Business Media
ISBN: 9401596506
Category : Science
Languages : en
Pages : 593
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Book Description
Conifer Cold Hardiness provides an up-to-date synthesis by leading scientists in the study of the major physiological and environmental factors regulating cold hardiness of conifer tree species. This state-of-the-art reference comprehensively explains current understanding of conifer cold hardiness ranging from the gene to the globe and from the highly applied to the very basic. Topics addressed encompass cold hardiness from the perspectives of ecology, ecophysiology, acclimation and deacclimation, seedling production and reforestation, the impacts of biotic and abiotic factors, and methods for studying and analyzing cold hardiness. The content is relevant to geneticists, ecologists, stress physiologists, environmental and global change scientists, pathologists, advanced nursery and silvicultural practitioners, and graduate students involved in plant biology, plant physiology, horticulture and forestry with an interest in cold hardiness.
Author: Elbert Luther Little
Publisher:
ISBN:
Category : Loblolly pine
Languages : en
Pages : 28
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Book Description
S2Natural hybrids or intergrades between pond and loblolly pines (Pinus serotina X taeda) occur in Delaware and Maryland, and hybrids or intergrades between pitch and pond pines (P. rigida X serotina) are found in New Jersey, Maryland, and Delaware. Hybrids between pitch and loblolly pines (P. rigida X taeda) are somewhat rare, but are known in New Jersey and Maryland. This paper describes the characteristics of the intergrades and of the parent species, and discusses the value of distinguishing intergrades and species in forestry practice.S3.
Author: J.M. Bonga
Publisher: Springer Science & Business Media
ISBN: 9401709947
Category : Technology & Engineering
Languages : en
Pages : 436
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Book Description
Since the first edition of our book "Tissue Culture in Fores try" in 1982 we have witnessed remarkable advances in cell and tissue culture technologies with woody perennials. In addition to forest biologists in government, industry, and universities, we now have molecular biologists, genetic engineers, and biochemists using cell and tissue cultures of woody species routinely. There fore, the time has come for an update of the earlier edition. In our present effort to cover new developments we have expanded to three volumes: 1. General principles and Biotechnology 2. Specific Principles and Methods: Growth and Development 3. Case Histories: Gymnosperms, Angiosperms and Palms The scientific barriers to progress in tree improvement are not so much lack of foreign gene expression in plants but our current inabili ty to regenerate plants in true-to-type fashion on a mas sive and economic scale. To achieve this in the form of an appro pr iate biotechnology, cell and tissue culture will increasing ly require a better understanding of basic principles in chemistry and physics that determine structural and functional relationships among molecules and macromolecules (proteins, RNA, DNA) within cells and tissues. These principles and their relationship with the culture medium and its physical environment, principles of clonal propagation, and genetic variation and ultrastructure are discussed in volume one.
Author: Arnold Krochmal
Publisher:
ISBN:
Category : Molluscicides
Languages : en
Pages : 12
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Book Description
S2Pokeweed, a plant abundant in Appalachia, exhibits some chemical similarities to a related species that has shown molluscicidal properties. Because this suggests that pokeweed, Phytolacca americana L. (P. decandra L.), has potential for controlling fresh-water snails, we have compiled this report of its chemical composition, uses, propagation methods, and other potentially useful species of the genus Phytolacca. The related species, Phytolacca dodencandra L'Her, was found to be the source of a molluscicide, which could pIay an important role in control of bilharziasis, a parasitic disease of humans widespread in Puerto Rico, Africa, and other tropical areas (22). Dead snails and small fish were observed in waterways in areas of Ethiopia where people washed their clothes with this Phytolacca's fruit, which is rich in saponins. Some distance downstream and immediately upstream from the washing places, abundant live snails were present, suggesting that the fruit contained a toxin acting as a molluscicide. This was subsequently confirmed by laboratory tests; tap-water extracts of the dried and powdered fruit had an LC100 (lethal concentration) of 10 parts per million against snails (Biomphalaria, Bulinus: and Lymnea spp.) after 24-hour exposure at 23OC. Furthermore, it was shown that molluscicidal potency was not affected by the presence of soil or vegetable matter, an important factor when the molluscicide is used under natural conditions. S3.
