SOMACLONAL VARIATIONS AND CROP IMPROVEMENT
This book contains the proceedings of a seminar in the CEC Programme of Co-ordination of Research on Plant Protein Improvement, sponsored by the CEC Directorate General for Agriculture, Co-ordination of Agricultural Research and held at Gembloux, Belgium 3-5 September, 1985. General problems of the selection of somaclonal variation in cereals, potato, ornamental crops, tobacco and a few forage grasses are reviewed. Reported somaclonal variants include chlorophyll deficient plants, and those with changed morphology, single gene mutations, polyploidy, aneuploidy, chromosomal rearrangements, modified yield, quality and disease resistance, and occasionally novel variants not present in the natural gene pools. Somaclonal variation results from both dominant and recessive mutations. The type and frequency of variants suggests that somaclonal variation is akin to non- directed, random mutagenesis which generates a large amount of unwanted variation. Consequently, most somaclonal variation is either useless or of limited use in direct varietal upgrading. However, somacional variants are easier to detect than those in conventional mutagenesis. It is concluded that the development of in-vitro selection procedures is essential to sieve out useful from useless variation to overcome the constraints of somaclonal variation in breeding programmes.
Bibliographic Reference: BOOK: 277 P., 1986, ISBN 90-247-3301-4 WRITE TO KLUWER ACADEMIC PUBLISHERS GROUP, DISTRIBUTION CENTER, P.O. BOX 322, 3300 AH DRODRECHT (THE NETHERLANDS) PRICE: HFL 115, (EUR 10236 EN).
Record Number: 1989125012200 / Last updated on: 1987-02-01
Available languages: en