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几年来,杂交稻在我市粮食增产中发挥了巨大的作用,深受群众欢迎.目前随着水稻雄性不育系、保持系和恢复系在生产上的大面积繁殖、制种和应用代数的增加,由于生物学、机械混杂和三系本身的变异,导致杂交水稻种子纯度的下降和优势的退化,影响了杂种优势的增产作用.因此,搞好“三系”提纯与原种生产,充分发挥“杂优”增产潜力,已成为各级有关部门普遍关注的科技问题.在省水稻育种攻关协作组指导下,我所与市种
In recent years, hybrid rice has played a tremendous role in the grain yield increase in our city, and has been well received by the masses.With the large-scale breeding, seed production and application of algebra in the male sterile, maintainer and restorer lines of rice, Increase, due to biological, mechanical hybrids and three lines of their own mutation, resulting in hybrid rice seed purity decreased and the advantages of degradation, affecting the heterosis increased production.Therefore, to do a good job, “three lines” purification and production of raw materials, full It has become a scientific and technological issue that has been widely concerned by relevant departments at all levels under the guidance of the Provincial Rice Breeding Collaborative Collaborative Group,