【摘要】 通过对烟草育种目标与杂种优势利用现状的分析,认为利用烟草杂交种来实现烟草育种目标是可能的。烟草不育系的选育现阶段以利用核质互作型细胞质雄性不育材料转育为主,但从遗传工具的方便程度和选育效率上来看,烟草雄性不育系的选育以利用显性核不育基因或光温敏核不育基因为上策。烟草杂交种亲本的选育应遵循品质优秀、抗性强、遗传多样和易于制种的原则。烟草杂交组合配制应遵循双亲性状互补、生态适应、品质适宜和遗传差异的原则。更多还原

【Abstract】 This paper proposes that it is possible to achieve the breeding aims by use of hybrid tobacco. The breeding of male sterile (MS) line in tobacco is mainly carried out by means of the cytoplasm nucleus interaction materials at present. For convenience and efficiency, it is best to adopt dominant genic MS gene or photopeiod sensitive/thermo sensitive genic MS gene to breed MS line in tobacco. The parental lines of hybrid tobacco should have high quality and strong resistance, be genetically diverse and easy to produce hybrid. The development of hybrid tobacco should follow the principles including complement in traits, ecological adaptation, good quality and difference in genetic background of parents.更多还原