无酚棉花品种的选育工作,国外已有20多年的历史。近年来,国内许多育种单位正在研究这方面的工作。我所从1977年开始收集国内外无酚材料,进行观察、鉴定、选择及杂交等工作。为了摸清无酚亲本的生物学 Phenol-free varieties of cotton breeding work abroad has more than 20 years of history. In recent years, many breeding units in China are studying the work in this area. Since 1977, we have collected domestic and foreign phenol-free materials for observation, identification, selection and hybridization. In order to find out the biology of phenol-free parents