Somaclonal Variation in Micropropagated Plants

摘要: Plants generally exhibit cytogenetic and genetic variations that are helpful to plant breeders for crop improvement. When such variants arise through the cell tissue culture process, using any portion as an explant material, these termed ‘somaclonal variations’ (SV). Variants obtained callus cultures referred ‘calliclones’, while protoplast known ‘protoclones’. On other hand, ‘gametoclonal variation’ refers arising in of gametic origin, pollen microspore cultures, distinguish them from somatic cell-derived regenerants. Somaclonal variation is a double-edged sword whereby its presence micropropagation programmes inimical, it can be gainfully exploited create stable variations, e.g. disease resistance, where methods fail or cumbersome.