Somaclonal Variation in Protoplast Derived Plants of Su/su Heterozygotes of Nicotiana Tabacum

Abstract

Genetic variability or somaclonal variation among plants regenerated from cell culture appears to be a ubiquitous phenomenon. It is discussed as a useful source of variability for plant improvement (1, 2). The genetic events giving rise to this variability are poorly understood and accessibility or manageability of somaclonal variation, therefore, are limited (3). A better knowledge of the origin of variability is important if one wants to minimize variation where clonal identity is desired or to enhance and possibly even direct somaclonal variation for purposes of plant improvement.