采用种间杂交新技术,得到了陆地棉×野生比克氏棉的F_1不育株,在嫁接教养及短日凉爽条件下培育,雌雄恢复了低育性,通过3次回交及对早期剧烈分离世代的选择之后,首次育成了兼具双亲特征,即既有比克氏棉的红花紫花斑及细强纤维,又有陆地棉的株型、熟期、白绒、高衣分和结铃性的稳定的杂种选系,命名为“HB红花系”,这是一种前所未有的新型种质资源,具有新品种选育及遗传研究的重要价值. By using interspecific hybridization technique, F_1 ​​sterile plants of upland cotton × wild Betula farrei were obtained and cultivated under grafting and short-day cool conditions. The fertility of the male and female plants were restored to low fertility. After three backcrosses and early vigorous separation After the selection of generations, the characteristics of both parents were bred for the first time. That is to say, there are both purple flower speckles and fine fibers of red flowers of Bicolon, as well as the plant type, mature period, white velvet, Sexually stable hybrid line, named “HB safflower,” which is an unprecedented new germplasm resources, with new varieties of breeding and genetic research of great value.