Author: Thomas K Uthup
Publisher: Springer Nature
ISBN: 9819759404
Category :
Languages : en
Pages : 506

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Author: Thomas K Uthup
Publisher: Springer
ISBN: 9789819759392
Category : Technology & Engineering
Languages : en
Pages : 0

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The edited volume deals with the origin, evolution, genetic diversity, commercial, and cultural aspects of selected tree species such as Rubber, Pine, Poplar, Almond, Cashew, Teak, Olive, Eucalyptus, Mango, Jack, Fig, Sandalwood and Ashoka. It covers major aspects of the altered gene pool of each tree species, its impact on biodiversity, the current scenario, and the strategies to protect and conserve the wild progenitors of these trees. Human interventions in the evolution and development of these economically important trees began at least four thousand years ago. Over these years, significant improvements in the traits of economic value were achieved for most of these tree species. However, the long history of domestication and the selective breeding pressure applied to their wild progenitors accelerated the loss of biodiversity, resulting in reduced genetic diversity and shrunken germplasm resources of these domesticated species. The book portrays the novel dimensions of the propitiousness of tree domestication and the interesting history behind it, which is interlaced with the development of civilizations, religions, local traditions, medicine and cuisine. This book is of interest to teachers, researchers, biodiversity experts, and policymakers. It can be used as an additional reading material for undergraduate and graduate students of forestry, ecology, genetics, and environmental sciences. The book also serves as an interesting and useful read for national and international agricultural scientists, as well as historians and the general public.

Author: W.T. Adams
Publisher: Springer Science & Business Media
ISBN: 9780792318576
Category : Science
Languages : en
Pages : 442

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Tropical climates, which occur between 23°30'N and S latitude (Jacob 1988), encompass a wide variety of plant communities (Hartshorn 1983, 1988), many of which are diverse in their woody floras. Within this geographic region, temperature and the amount and seasonality of rainfall define habitat types (UNESCO 1978). The F AO has estimated that there 1 are about 19 million km of potentially forested area in the global tropics, of which 58% were estimated to still be in closed forest in the mid-1970s (Sommers 1976; UNESCO 1978). Of this potentially forested region, 42% is categorized as dry forest lifezone, 33% is tropical moist forest, and 25% is wet or rain forest (Lugo 1988). The species diversity of these tropical habitats is very high. Raven (1976, in Mooney 1988) estimated that 65% of the 250,000 or more plant species of the earth are found in tropical regions. Of this floristic assemblage, a large fraction are woody species. In the well-collected tropical moist forest of Barro Colorado Island, Panama, 39. 7% (481 of 1212 species) of the native phanerogams are woody, arborescent species (Croat 1978). Another 21. 9% are woody vines and lianas. Southeast Asian Dipterocarp forests may contain 120-200 species of trees per hectare (Whitmore 1984), and recent surveys in upper Amazonia re corded from 89 to 283 woody species ~ 10 cm dbh per hectare (Gentry 1988). Tropical communities thus represent a global woody flora of significant scope.

Author: Food and Agriculture Organization of the United Nations
Publisher: Food & Agriculture Org.
ISBN: 9251084025
Category : Technology & Engineering
Languages : en
Pages : 304

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The publication was prepared based on information provided by 86 countries, outcomes from regional and subregional consultations and commissioned thematic studies. It includes: •an overview of definitions and concepts related to Forest Genetic Resources (FGR) and a review of their value; •a description of the main drivers of changes; •the presentation of key emerging technologies; •an analysis of the current status of FGR conservation, use and related developments; •recommendations addressing the challenges and needs. By the FAO Commission on Genetic Resources for Food and Agriculture.

Author: Fernando E. Vega
Publisher: Academic Press
ISBN: 0124171737
Category : Science
Languages : en
Pages : 641

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Bark Beetles: Biology and Ecology of Native and Invasive Species provides a thorough discussion of these economically important pests of coniferous and broadleaf trees and their importance in agriculture. It is the first book in the market solely dedicated to this important group of insects, and contains 15 chapters on natural history and ecology, morphology, taxonomy and phylogenetics, evolution and diversity, population dynamics, resistance, symbiotic associations, natural enemies, climate change, management strategies, economics, and politics, with some chapters exclusively devoted to some of the most economically important bark beetle genera, including Dendroctonus, Ips, Tomicus, Hypothenemus, and Scolytus. This text is ideal for entomology and forestry courses, and is aimed at scientists, faculty members, forest managers, practitioners of biological control of insect pests, mycologists interested in bark beetle-fungal associations, and students in the disciplines of entomology, ecology, and forestry. - Provides the only synthesis of the literature on bark beetles - Features chapters exclusively devoted to some of the most economically important bark beetle genera, such as Dendroctonus, Ips, Tomicus, Hypothenemus, and Scolytus - Includes copious color illustrations and photographs that further enhance the content

Author: National Academies of Sciences, Engineering, and Medicine
Publisher: National Academies Press
ISBN: 0309482887
Category : Science
Languages : en
Pages : 241

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The American chestnut, whitebark pine, and several species of ash in the eastern United States are just a few of the North American tree species that have been functionally lost or are in jeopardy of being lost due to outbreaks of pathogens and insect pests. New pressures in this century are putting even more trees at risk. Expanded human mobility and global trade are providing pathways for the introduction of nonnative pests for which native tree species may lack resistance. At the same time, climate change is extending the geographic range of both native and nonnative pest species. Biotechnology has the potential to help mitigate threats to North American forests from insects and pathogens through the introduction of pest-resistant traits to forest trees. However, challenges remain: the genetic mechanisms that underlie trees' resistance to pests are poorly understood; the complexity of tree genomes makes incorporating genetic changes a slow and difficult task; and there is a lack of information on the effects of releasing new genotypes into the environment. Forest Health and Biotechnology examines the potential use of biotechnology for mitigating threats to forest tree health and identifies the ecological, economic, and social implications of deploying biotechnology in forests. This report also develops a research agenda to address knowledge gaps about the application of the technology.

Author: Mark Vellend
Publisher:
ISBN:
Category :
Languages : en
Pages : 348

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Author: Roy R. Silen
Publisher:
ISBN:
Category : Douglas fir
Languages : en
Pages : 44

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Author: Alejandro Casas
Publisher: Frontiers Media SA
ISBN: 2889630471
Category :
Languages : en
Pages : 284

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The Neotropical area is a main setting of the earliest experiences of domestication ofplants, and evolutionary processes guided by humans, which continue being active inthe area. Studies comprised in this Research Topic show a general panorama aboutsimilarities and particularities of processes of domestication for different plant groupsand regions, some of them illustrate how the domestication processes originated anddiffused, how landscape domestication has operated and continues being practicedand others discuss some of the main challenges for designing policies for biosafetyand conservation of plant genetic resources. It is an attempt to identify main topicsfor research on evolution under domestication, and opportunities that researcherscan find in the Neotropics to understand how and why these processes occurredin the past and present.

Author: Patrick Matthew
Publisher:
ISBN:
Category : Arboriculture
Languages : en
Pages : 420

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