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近年来,植物组织培养技术的应用,产生了新的遗传变异性,加速了植物改良和作物育种进程。Skirvin(1978)曾将愈伤组织产生的植株称为愈伤无性系(calli—clones)。Shepard等(1980)又将原生质体衍生的植株称为原生质体无性系(protoclones),而Scoweroft和Larkin(1982)认为,将离体培养再生的植株统称为体细胞无性系(somaclones)是合宜的。 农业上大多数重要物种,其体细胞无性系的变异要比其供体种子后代大得多。Burk和Matzinger(1976)首先以烟草二倍体自交15代的品种为材料,在获得的46个体
In recent years, the application of plant tissue culture technology has resulted in new genetic variability and accelerated plant improvement and crop breeding process. Skirvin (1978) called callus-producing plants calli-clones. Protoplast-derived plants in turn are referred to as protoclones by Shepard et al. (1980), while Scoweroft and Larkin (1982) argue that it is desirable to refer to in vitro regenerated plants collectively as somaclones . In most agriculturally important species, their somaclonal variations are much larger than those of their donor seeds. Burk and Matzinger (1976) first used tobacco diploid selfing 15 generations of the material as a material, obtained 46 individuals