高温诱导阔叶风铃草产生形态学性状变异

The Morphological Trait Variation of Campanula atifolia Induced by High Temperature

为探索高温诱导对阔叶风铃草产生形态学性状变异的影响,试验以阔叶风铃草为材料,采用高温诱导的方法,设计正交试验用不同高温、花芽长度和处理时间等因子进行形态变异的诱导,用极差分析法对每一因子的诱导效果进行评估。结果表明,温度和处理时间是影响阔叶风铃草形态学性状变异的主要因子。与紫色五瓣花的原种相比,试验获得了多种变异新植株,其中六瓣花5株、椭圆花瓣1株、白色花3株。试验说明在开发遗传基因资源上高温诱导的有效性,并将大大促进改变其花瓣观赏性状育种技术的发展。

Explore the influence on the morphological trait variation of Campanula atifolia induced by high temperature. Campanula atifolia, as material, using orthogonal design with temperature, the length of flower bud and processing time as factors were induced by high temperature. The effects of each factor were evaluated by range analysis. The results indicated that the temperature and processing time were the main factors which affect the morphological trait variation of Campanula atifolia. Compared with the original species with purple five petals, new variety plants were obtained, 5 had six petals, 1 had oval petals and 3 had white flower color. The experiment illustrated the effectiveness that induced by high temperature in the development of genetic resources, and would greatly promote the development of breeding technology on petals variation.