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近年来,国内外在突变育种工作中利用物理、化学因素新技术创造了不少农作物优良品种,并在诱变方法,实际成果方面取得了可喜的进展。突变育种的特点是育种时间短,可使品种的某些性状得到大幅度的改良,或者获得某些崭新的性状,它特别适用于对原有优良品种的个别性状进行改良,据此自1983年开始,我们在泡桐耐盐性育种工作中应用了γ—射线,及“EMS”化学诱变剂对种子进行了多种剂量的处理试验,初步得出了γ—射线对泡桐种子处理的适宜剂量为15—25千伦琴。“EMS”对泡桐种子前处理浸种24小时,在室温(13℃)下催芽16小时,3％浓度药液浸种10小时,以及前处理浸种24小时,35℃恒温催芽48小时,3％药液浓度浸种2小时为两种适宜处理方法,并
In recent years, many new varieties of crops have been created by new technologies of physical and chemical factors in the field of mutation breeding at home and abroad, and remarkable progress has been made in mutagenesis methods and practical achievements. Mutant breeding is characterized by a short breeding period, which can result in substantial improvement of certain traits of the breed, or access to some new traits that are particularly suitable for the improvement of individual traits of the original fine breeds Initially, we applied γ-ray in the paulownia salt-tolerant breeding and various treatments of the seeds with “EMS” chemical mutagen. The suitable dosages of γ-rays for the seed treatment of paulownia were preliminarily obtained. For 15-25 thousand Roentgen. EMS was used to pre-soak Paulownia seed for 24 hours, germinate for 16 hours at room temperature (13 ° C), seed soaking for 3 hours at 3% concentration, pre-soaking for 24 hours, sprouting for 48 hours at 35 ° C and 3% Concentration soaking two hours for two appropriate treatment methods, and