Asparagus Tetraploids from Callus Tissue1

Tissue culture, variation, clone plant breeding, mutagens. SUMMARY This literature review suggests a novel approach to intra-clonal plant improvement which will utilize both the natural and induced variation associated with clonally propagated plants through various in vitro and in vivo procedures. Many plants obtained in this manner will be of single-cell origin and, hence, of pure mutant type avoiding the traditional chimerism phenomena of mutation breeding studies. While such a system of plant breeding is not intended to replace conventional breeding methods for most crops, it may have special use for the plant breeder who is working with crops which are unique, highly-adapted, or in which the sexual apparatus is disturbed.

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Somaclonal variation — a novel source of variability from cell cultures for plant improvement

Larkin

Scowcroft

1981

Theoret. Appl. Genetics

2,642

993

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It is concluded from a review of the literature that plant cell culture itself generates genetic variability (somaclonal variation). Extensive examples are discussed of such variation in culture subclones and in regenerated plants (somaclones). A number of possible mechanisms for the origin of this phenomenon are considered. It is argued that this variation already is proving to be of significance for plant improvement. In particular the phenomenon may be employed to enhance the exchange required in sexual hybrids for the introgression of desirable alien genes into a crop species. It may also be used to generate variants of a commercial cultivar in high frequency without hybridizing to other genotypes.

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Asparagus Tetraploids from Callus Tissue1

Cited by 10 publications

References 5 publications

Micropropagation of Asparagus (Asparagus officinalis L.)

Micropropagation of Asparagus (Asparagus officinalis L.)

Natural and induced variation in tissue culture

Somaclonal variation — a novel source of variability from cell cultures for plant improvement

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