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玉米杂交种纯度不高,除了常规的隔离不安全,亲本纯度不高,去杂、去雄不彻底等原因之外,近年来,由于部分种子企业的无序竞争和繁种基地的管理混乱,成为出现这一问题新的因素。各制种公司和良繁基地应因地制宜,积极采取应对措施,进一步提高杂交种的纯度。1 新的因素1.1 亲本来源不同同一组合的自交系不是单一的繁
In addition to the unsafe regular isolation, low purity of the parents, miscellaneous matrices and incomplete debridement, the maize hybrids are not pure in nature. In recent years, due to the disorderly competition of some seed enterprises and the chaotic management of breeding bases, Become a new factor in this issue. The seed production companies and Liangfan base should be based on local conditions, and actively take countermeasures to further improve the purity of hybrids. 1 new factors 1.1 parental origin of the same combination of inbred lines is not a single complex