Cryopreservation of Plant Germplasm I

Numerous experts have contributed to this volume, which is divided into the following sections: I Cryopreservation of Plant Cells, Tissues, Organs, and Seeds; II Tree species - Citrus, Malus, Morus, Pyrus, Juglans, Date-Palm, Oil Palm, ...

Cryopreservation of Plant Germplasm I

The germ plasm of numerous plant species, especially those of forest trees, some agricultural crops, and medicinal plants, is endangered and threatened with extinction. This depletion of germplasm pools and the shrinkage of naturally occurring genetic resources have caused international concern. Conventionally, the germplasm of plants is conserved through seeds, tubers, roots, corms, rhizomes, bulbs, cuttings, etc. However, the germ plasm of a number of trees and plantation crops (such as coconut, cocao, coffee, oil palm, rubber, mango, horse chestnut, etc. ) cannot be preserved since their seed are short-lived (recalcitrant). Likewise, germplasm of vegetatively propagated crops (such as potato and cassava) cannot be stored on a long term basis and has to be grown and multiplied periodically in nurseries and fields. The plants are thus exposed to unpredictable weather conditions and diseases, with the result that instances are known where entire genetic stocks are lost. Therefore, unconventional methods are being developed for the storage and international exchange of germplasm. For this purpose in vitro cultures have been employed, but they can only enable short-to medium term preservation; moreover, cell cultures upon repeated subculture undergo genetic erosion. In view of the recent developments in the in vitro induction of genetic variability through somaclonal variation, somatic hybridization, recombinant DNA technology, etc. , new methods need to be employed for the storage of desirable cultures. In this regard freeze preservation of cells in liquid nitrogen (-196 0q, like that of semen, enables long-term storage, theoretically, for an indefinite period of time.

More Books:

Cryopreservation of Plant Germplasm I
Language: en
Pages: 514
Authors: Y. P. S. Bajaj
Categories: Technology & Engineering
Type: BOOK - Published: 2013-03-09 - Publisher: Springer Science & Business Media

The germ plasm of numerous plant species, especially those of forest trees, some agricultural crops, and medicinal plants, is endangered and threatened with extinction. This depletion of germplasm pools and the shrinkage of naturally occurring genetic resources have caused international concern. Conventionally, the germplasm of plants is conserved through seeds,
Cryopreservation of Plant Germplasm I
Language: en
Pages: 512
Authors: Y. P. S. Bajaj
Categories: Science
Type: BOOK - Published: 1995 - Publisher: Springer Verlag

Whole plants have been regenerated from isolated protoplasts, cells, tissues, and organs freeze-preserved in liquid nitrogen. Thus cryopreservation has proved to be an important tool for the storage and conservation of plant genetic resources. Numerous experts have contributed to this volume, which is divided into the following sections: General introduction
Cryopreservation of Plant Germplasm II
Language: en
Pages: 396
Authors: L.E. Towill, Y.P.S. Bajaj
Categories: Science
Type: BOOK - Published: 2013-03-14 - Publisher: Springer Science & Business Media

Ex situ preservation of germplasm for higher plant species has been accom plished using either seeds or clones, but storage of these under typical condi tions does not provide the extreme longevities that are needed to minimize risk of loss. Costs of maintenance and regeneration of stocks are also high.
Cryopreservation of plant germplasm
Language: en
Pages:
Authors: Yash Pal Singh Bajaj (Biotechnologiste)
Categories: Science
Type: BOOK - Published: 1995 - Publisher:

Books about Cryopreservation of plant germplasm
Cryopreservation of Tropical Plant Germplasm
Language: en
Pages: 496
Authors: Florent Engelmann
Categories: Crops
Type: BOOK - Published: 2000 - Publisher:

Development of cryopreservation techniques. Importance of cryopreservation for the conservation of plant genetic resources. Fundamental aspects of cryopreservation. Cryopreservation techniques. Ongoing cryopreservation projects -- Research and its application. Current status of cryopreservation research and future perspectives of its application in national programmes.