Conservation of Plant Genetic Resources in Vitro: General aspects

Conservation of Plant Genetic Resources in Vitro: General aspects PDF

Author: M. K. Razdan

Publisher: Bib. Orton IICA / CATIE

Published: 1997

Total Pages: 16

ISBN-13: 9781886106765

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This text presents the research findings of international research institutes and organizations who have co-ordinated efforts to use tissue culture methods for the conservation of certain crops. The articles highlight the direction of efforts in germplasm conservation.

In Vitro Methods for Conservation of Plant Genetic Resources

In Vitro Methods for Conservation of Plant Genetic Resources PDF

Author: J.H. Dodds

Publisher: Springer

Published: 1991

Total Pages: 272

ISBN-13:

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However, the transition from primitive to 'advanced' cultivars has had the effect of narrowing the genetic base. This has happened in two distinct ways: (1) selection for relative uniformity, resulting in 'pure' lines, multi lines, single or double hybrids, etc. ; and (2) selection for closely defined objectives. Both of these processes have resulted in a marked reduction in genetic variation. At the same time, there has been a tendency to restrict the gene pool from which parental material has been drawn. This is a result of the high level of productivity achieved when breeding within a restricted but well-adapted gene pool, and of breeding methods which have made it possible to introduce specifically desired improvements, such as disease resistance and quality characteristics, into breeding stocks with a minimum of disturbance to genotypic structure. Developments in agriculture, such as intensive mechanization, the widespread application of fertilizers and the use of herbicides, fungicides and pesticides, have created a situation whereby a few, selected high yielding cultivars may be grown over large parts of the earth, so further contributing to a decline in crop genetic diversity. This process is under way in all countries, both developed and developing, and unfortunately in cludes some of the richest primary and secondary gene centres of several important food crops.

Managing Global Genetic Resources

Managing Global Genetic Resources PDF

Author: National Research Council

Publisher: National Academies Press

Published: 1993-02-01

Total Pages: 476

ISBN-13: 0309131863

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This anchor volume to the series Managing Global Genetic Resources examines the structure that underlies efforts to preserve genetic material, including the worldwide network of genetic collections; the role of biotechnology; and a host of issues that surround management and use. Among the topics explored are in situ versus ex situ conservation, management of very large collections of genetic material, problems of quarantine, the controversy over ownership or copyright of genetic material, and more.

Efficient Conservation Of Crop Genetic Diversity

Efficient Conservation Of Crop Genetic Diversity PDF

Author: Detlef Virchow

Publisher: Springer Science & Business Media

Published: 2013-03-09

Total Pages: 250

ISBN-13: 3662052121

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The book reflects the work in progress regarding the analysis of the costs of crop genetic resources conservation that has been conducted at various research insti tutes over the last couple of years, including research conducted at ZEF and asso ciated institutes. In addition, contributions in this publication were presented at a special session during the "Global Dialogue: The Role of the Village in the 2]'1 Century: Crops, Jobs and Livelihood" in Hannover, Germany, at the World Exposition in Au gust 2000. The purpose of the publication is to make a general contribution to the ongoing discussion about the conservation of crop genetic resources as part of the global strategy to secure increasing food production in a sustainable way. Specifically, it discusses the costs of the worldwide efforts to conserve crop genetic resources on the basis of theoretical and applied studies. It aims to serve decision-makers at dif ferent levels with information on the costs involved in the conservation of genetic resources and hence to increase the awareness of the importance of improving the cost effectiveness of different conservation methods in order to optimize the sus tainability of conservation. The quoted Leipzig Declaration, which was adopted at the Fourth International Technical Conference on Plant Genetic Resources in Leipzig in June 1996, dem onstrates the close linkage of the contributions to the ongoing discussion about the implementation of the Global Plan of Actionfor the Conservation and Sustainable Utili zation of Plant Genetic Resources for Food and Agriculture.

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