用雄性不育两用系配制棉花杂交种,基于其育性主要受一对隐性核基因所控制,故在群体中会分离出雄性不育株和雄性可育株,各占50％左右。在配制杂交种时,应准确鉴别其育性,并把雄性可育株全部拔除干净,保留雄性不育株与恢复系杂交配制杂交种。 Cotton hybrids are formulated with male-sterile dual-purpose lines, which are mainly controlled by a pair of recessive nuclear genes based on their fertility. Therefore, male sterile and male fertile lines are isolated in the population, each accounting for about 50% of the total. In the preparation of hybrids, we should accurately identify their fertility, and all the male fertile plants were all removed clean, retain male sterile lines and restorer hybrids prepared hybrids.