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植物体细胞组织培养所诱发的变异称为体细胞无性系变异。据报道,体细胞无性系变异的现象是相当普遍的,变异所涉及的性状也相当广泛。这种变异是在细胞水平上诱发的变异。并能通过再生植株的分化在整株水平上表现出来。变异是选择的基础,烟草外植体培养物中,能获得相当频率的变异,该变异群体可做为选种材料。Burk 等首先从烟草(Nicotiana taba-cum L.)发现了广泛的表型变异,烟叶产量、等级、开花期、株高、叶片、生物碱等性状的
Variation induced by somatic cell tissue culture is called somaclonal variation. It has been reported that the phenomenon of somaclonal variations is quite common and the traits involved in the variation are quite extensive. This variation is a variation induced at the cellular level. And through the differentiation of regenerated plants showed in the whole plant level. Mutation is the basis of choice. In tobacco explant cultures, considerable frequency variation can be obtained, and this variation population can be used as selection material. Burk et al. First found a wide range of phenotypic variation from tobacco (Nicotiana taba-cum L.), leaf yield, grade, flowering period, plant height, leaf, alkaloid and other traits