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为了选育比现有杂交水稻抗病、熟期和丰产性状更理想的新组合,我所观察了上千个水稻原始材料的开花习性、抗性、生育特性、丰产性状和遗传来源,后将初选材料作母本,以现有恢复系作父本(IR_(24)等)进行杂交,观察其杂种(F_1)的优势表现,再将86个符合初定标准的品种作转育新不育系的父本,V_(41)A和V_(20)A作母本,通过测交、连续回交换核法,把亲本的细胞核转入现有野败不育系的细胞质中去,转育成新的同源不育系,达到改造和提高现有不育系的目的。同时,通过复式杂交、突变等手段.侧重选育早熟恢复系,有步骤地
In order to breed new combinations with better resistance, maturity and high yield traits than the existing hybrid rice, I observed the flowering habits, resistance, fertility traits, yield traits and genetic origins of thousands of rice raw materials, The primary material was used as the female parent and the restorer line was used as the male parent (IR_ (24), etc.) to observe the dominant performance of its hybrid (F_1). Then 86 new breeds that meet the initial standard were transferred to new ones The male parent of V_ (41) A and V_ (20) A were maternal parents. The nuclei of parents were transferred back to the cytoplasm of existing wild sterile male sterile lines The new homologous sterile lines, to transform and improve the existing purpose of sterile lines. At the same time, through hybridization, mutation and other means. Focus on breeding early restorer lines, step by step