玉米雄性细胞质不育系的利用,是生产上的重要问题。近几年来国内有的地区和单位在研制细胞质雄性不育系过程中,曾遭到小斑病菌的侵袭。我所在1964年和1973年两次转育的“T”型细胞质雄性不育系,也遭到了小斑病菌的严重为害。为此,1976年冬由河北省植保土肥所等十三个单位合作, Maize cytoplasmic male sterile line utilization, is an important issue in production. In recent years, some domestic areas and units in the development of cytoplasmic male sterile lines, had been susceptible to Xanthomonas oryzae. The “T” type cytoplasmic male sterile lines in our province, which were twice in 1964 and 1973, were also severely damaged by Alternaria solani. To this end, the winter of 1976 by the Hebei Provincial Plant Protection and Fertilizer by thirteen units,