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In Vitro Methods for Conservation of Plant Genetic Resources - John M. Dodds

In Vitro Methods for Conservation of Plant Genetic Resources

By: John M. Dodds (Editor)

Hardcover Published: 31st December 1990
ISBN: 9780412338700
Number Of Pages: 247

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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.

Industry Reviews

...recommended to all involved with plant genetic conservation and to postgraduate students of in vitro methods. - The Biologist

Reduced-growth storage of germplasm, S.Y.C.Ng and N.Q.Ng; cryopreservation, L.E.Towill; molecular analysis of genetic stability, R.H.Potter and M,G,K,Jones; potato germplasm conservation, J.H.Dodds et al; conservation of cassava germplasm, L.Villegas and M.Bravato; conservation and distribution of sweet potato germplasm, C.G.Kuo; conservation of tree crops, C.P.Wilkins.

ISBN: 9780412338700
ISBN-10: 041233870X
Audience: Professional
Format: Hardcover
Language: English
Number Of Pages: 247
Published: 31st December 1990
Publisher: Chapman and Hall
Country of Publication: GB
Dimensions (cm): 23.5 x 15.5  x 2.54
Weight (kg): 1.2