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Genetic erosion, that is, the loss of native plant and genetic
diversity has been exponential from the Mediterranean Basin through
the Twentieth century. This careless eradication of species and
genetic diversity as a result of human activities from a 'hot-spot'
of diversity threatens sustainable agriculture and food security
for the temperate regions of the world. Since the early 1900s there
has been a largely ad hoc movement to halt the loss of plant
diversity and enhance its utilisation. The Convention on Biological
Diversity and Food and Agriculture Organisation of the United
Nations International Undertaking on Plant Genetic Resources, both
highlight the need to improve conservation methodologies and
enhance utilisation techniques. It has been argued that the most
important component of biodiversity is the genetic diversity of
crop and forage species used to feed humans and livestock. These
cultivated and related wild species provides the raw material for
further selection and improvement. Leguminosae species are of major
economic importance (peas, chickpeas, lentils and faba beans, as
well as numerous forage species) and provide a particularly rich
source of protein for human and animal foods. Their distribution is
concentrated in the Mediterranean region and therefore the
improvement of their conservation and use in the region is
critical. This text is designed to help ensure an adequate breadth
of legume diversity is conserved and to help maximise the use of
that conserved diversity. The subjects of conservation and use of
legume diversity, the Mediterranean ecosystem and taxonomy of
legumes are introduced. Generic reviews of the taxonomy, centre of
diversity, ecogeographicdistribution, genetic diversity
distribution, conservation status, conservation gaps and future
research needs are provided, along with a discussion of the
importance of rhizobia to the maintenance of legume diversity.
Current ex situ and in situ conservation activities as well current
legume uses are reviewed. In conclusion future priorities for ex
situ and in situ plant genetic conservation and use of
Mediterranean legumes are highlighted. All contributors look
forward rather than simply reviewing past and current activities
and therefore it is hoped that the identification of genetic
erosion, location of taxonomic and genetic diversity and promotion
of more efficient utilisation of conserved material will be
enhanced.
It is a distressing truism that the human race during the last
millennium has caused the exponential loss of plant genetic
diversity throughout the world. This has had direct and negative
economic, political and social consequences for the human race,
which at the same time has failed to exploit fully the positive
benefits that might result from conserving and exploiting the
world's plant genetic resources. However, a strong movement to halt
this loss of plant diversity and enhance its utilisation for the
benefit of all humanity has been underway since the 1960's (Frankel
and Bennett, 1970; Frankel and Hawkes, 1975). This initiative was
taken up by the Convention on Biological Diversity (CBD, 1992) that
not only expounds the need to conserve biological diversity but
links conservation to exploitation and development for the benefit
of all. Article 8 of the Convention clearly states the need to
develop more effective and efficient guidelines to conserve
biological diversity, while Article 9, along with the FAO
International Undertaking on Plant Genetic Resources, promotes the
adoption of a complementary approach to conservation that
incorporates both ex situ and in situ techniques.
We live in critical times for the world's diversity of plants and
animals. It is universally agreed that a catastrophic loss of
biological diversity is occurring at the moment, with species, and
equally importantly, genes being lost forever. However, the signing
of the Biodiversity Convention at the Earth Summit in 1992 drew
attention to the need to conserve and equitably utilize biological
diversity for the benefit of all humankind. The convention placed
emphasis on the need for a complementary approach to conservation
that employed both ex situ and in situ techniques. Though much
conservation and genetic research has focused on ex situ
techniques, where the biological diversity is moved from its
original location for safe storage, relatively little progress has
been made in developing strategies appropriate for the genetic
conservation of biological diversity in situ, in its native
environment. The time is right for a definitive assessment of the
principles required to conserve the genetic diversity of crops,
their wild relatives and wild species within natural habitats. This
book therefore provides a practical and theoretical introduction to
the techniques of in situ conservation of plant genetic resources.
It includes methodologies, case studies and in-depth discussion of
on-farm and genetic reserve conservation, written by acknowledged
international experts on the subject.
It is a distressing truism that the human race during the last
millennium has caused the exponential loss of plant genetic
diversity throughout the world. This has had direct and negative
economic, political and social consequences for the human race,
which at the same time has failed to exploit fully the positive
benefits that might result from conserving and exploiting the
world's plant genetic resources. However, a strong movement to halt
this loss of plant diversity and enhance its utilisation for the
benefit of all humanity has been underway since the 1960's (Frankel
and Bennett, 1970; Frankel and Hawkes, 1975). This initiative was
taken up by the Convention on Biological Diversity (CBD, 1992) that
not only expounds the need to conserve biological diversity but
links conservation to exploitation and development for the benefit
of all. Article 8 of the Convention clearly states the need to
develop more effective and efficient guidelines to conserve
biological diversity, while Article 9, along with the FAO
International Undertaking on Plant Genetic Resources, promotes the
adoption of a complementary approach to conservation that
incorporates both ex situ and in situ techniques.
The Asian beans and grams, the species of Vigna (subgenus
Ceratotropis), include several legumes that are an essential
component in the diets of a large proportion of Asia's population,
and interest in these legumes is growing as ethnic cuisine spreads
worldwide. However, this important group of legumes is little known
compared to the closely related Phaseolus beans and soybean. That
deficiency is addressed for the first time in this fully
illustrated comprehensive conservation, genetics, taxonomic, and
agricultural monograph on the genetic resources of the Asian Vigna.
The book deals with the phylogeny of the group from the
perspectives of morphological and molecular analyses, ex situ and
in situ conservation, eco-geographical analyses, and research. In
addition, morphological descriptions, keys, and eco-geographic
details of each species in the group are provided. This genetic
resources handbook and guide to the Asian Vigna will be a valuable
reference for agriculturists, conservationists, taxonomists, other
scientists, and students interested in the legumes and plant
genetic resources.
Plant diversity sustains all animal life, and the genetic diversity
within plants underpins global food security. This text provides a
practical and theoretical introduction to the strategies and
actions to adopt for conserving plant genetic variation, as well as
explaining how humans can exploit this diversity for sustainable
development. Notably readable, it initially offers current
knowledge on the characterization and evaluation of plant genetic
resources. The authors then discuss strategies from in situ and ex
situ conservation to crop breeding, exploring how these can be used
to improve food security in the face of increasing agrobiodiversity
loss, human population growth and climate change. Each chapter
draws on examples from the literature or the authors' research and
includes further reading references. Containing other useful
features such as a glossary, it is invaluable for professionals and
undergraduate and graduate students in plant sciences, ecology,
conservation, genetics and natural resource management.
Based on the 2010 conference 'Towards the establishment of genetic
reserves for crop wild relatives and landraces in Europe', this
book is the cutting edge discussion of agrobiodiversity
conservation. By considering the benefits of understanding and
preserving crop wild relatives and landraces, it encompasses issues
as wide-ranging and topical as habitat protection, ecosystem health
and food security. Focusing on Europe, but globally relevant,
Agrobiodiversity Conservation is ideal for postgraduate students of
conservation and environmental studies, conservation professionals,
policy makers and researchers.
Conservation in protected areas has focused on preserving
biodiversity of ecosystems and species, whereas conserving the
genetic diversity contained within species has historically often
been ignored. However, maintaining genetic diversity is fundamental
to food security and the provision of raw materials and it is best
preserved within plants' natural habitats. This is particularly
true for wild plants that are directly related to crop species and
can play a key role in providing beneficial traits, such as pest or
disease resistance and yield improvement. These wild relatives are
presently threatened due to processes of habitat destruction and
change and methodologies have been adapted to provide in-situ
conservation through the establishment of genetic reserves within
the existing network of protected areas. Providing a long-awaited
synthesis of these new methodologies, this book presents a
practical set of management guidelines that can be used for the
conservation of plant genetic diversity of crop wild relatives in
protected areas.
Maintaining food security in the face of human population increase
and climate change is one of the critical challenges facing us in
the 21st Century. Utilisation of the full range of agrobiodiversity
will be a necessary tool in addressing this challenge. In this book
a team of international contributors review all aspects of
utilization and conservation of crop wild relative (CWR) and
landrace (LR) diversity as a basis for crop improvement and future
food security. Enhancing Crop Genepool Use covers four key areas: *
Characterization techniques - novel 'omics' techniques and
predictive tools that can be used to identify adaptive traits and
expedite plant breeding. * Conservation strategies - how to develop
national, regional and global CWR and LR conservation strategies,
how better to target conservation to meet the needs of the plant
breeding community, and how to integrate CWR and LR diversity into
existing biodiversity conservation programmes. * Facilitating CWR
and LR use - pre-breeding using 'exotic' germplasm, meeting
breeders' needs, integrating the conservation and user communities,
and policy enhancement. * Informatics development - improving
characterization, trait and conservation data management and
accessibility, and inter-information system operability. This book
will appeal to a wide array of specialists and postgraduate
students, such as those working in the fields of agrobiodiversity
conservation and use, conservation, ecology, botany, genetics,
plant breeding and agriculture.
The recent development of ideas on biodiversity conservation was
already being considered almost three-quarters of a century ago for
crop plants and the wild species related to them, by the Russian
geneticist N. . Vavilov. He was undoubtedly the first scientist to
understand the impor tance for humankind of conserving for
utilization the genetic diversity of our ancient crop plants and
their wild relatives from their centres of diversity. His
collections showed various traits of adaptation to environ mental
extremes and biotypes of crop diseases and pests which were unknown
to most plant breeders in the first quarter of the twentieth cen
tury. Later, in the 1940s-1960s scientists began to realize that
the pool of genetic diversity known to Vavilov and his colleagues
was beginning to disappear. Through the replacement of the old,
primitive and highly diverse land races by uniform modem varieties
created by plant breed ers, the crop gene pool was being eroded.
The genetic diversity of wild species was equally being threatened
by human activities: over-exploita tion, habitat destruction or
fragmentation, competition resulting from the introduction of alien
species or varieties, changes and intensification of land use,
environmental pollution and possible climate change."
Plant diversity sustains all animal life, and the genetic diversity
within plants underpins global food security. This text provides a
practical and theoretical introduction to the strategies and
actions to adopt for conserving plant genetic variation, as well as
explaining how humans can exploit this diversity for sustainable
development. Notably readable, it initially offers current
knowledge on the characterization and evaluation of plant genetic
resources. The authors then discuss strategies from in situ and ex
situ conservation to crop breeding, exploring how these can be used
to improve food security in the face of increasing agrobiodiversity
loss, human population growth and climate change. Each chapter
draws on examples from the literature or the authors' research and
includes further reading references. Containing other useful
features such as a glossary, it is invaluable for professionals and
undergraduate and graduate students in plant sciences, ecology,
conservation, genetics and natural resource management.
Crop wild relatives (CWR) are species closely related to crop
plants which can contribute beneficial traits, such as pest or
disease resistance and yield improvement. These species are
critical for improving agricultural production and increasing food
security. They are also essential components of natural and
semi-natural habitats as well as agricultural systems, and are
therefore vital in maintaining ecosystem health. However, CWR, like
any other group of wild species, are subject to an increasing range
of threats: habitat loss, degradation and mismanagement,
over-collection and climate change. Through an examination of the
national, regional and global context of CWR, these authoritative
studies present methodologies and case studies that review and
provide recommendations for global conservation and use. Topics
range from the establishment of conservation priorities and
strategies, threat assessment and genetic erosion and pollution.
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