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一、光敏感核不育系的优点和缺点 光敏感核不育系是三系杂交水稻研究应用中发展起来的新事物。它有着极大的生命力,比三系杂交稻无需保持系,使程序从简,省工和降低生产成本,打破了三系的恢保关系,从而配组自由。它的重大价值可以直接利用籼粳亚种的杂交优势,选育比现有组合增产20%以上在超高产杂交稻。另一方面,光敏核性不育也有不足之处,稳定性较差(不育性受温度的影响较大),表现出有“打摆子”的现象。同时,这些光敏感核不育系绝大多数属于光温敏感型,其育性最稳定
First, the advantages and disadvantages of light-sensitive nuclear sterile lines Photo-sensitive male sterile line is developed three-line hybrid rice research and development of new things. It has great vitality, no need to maintain the system than the three-line hybrid rice, make the procedure simple, labor-saving and reduce the cost of production, breaking the relationship between the three systems of recovery and security, so as to match the group freedom. Its immense value can directly utilize the hybridization advantages of indica-japonica subspecies, breeding more than 20% more yield than the existing combinations in super-high yielding hybrid rice. On the other hand, photo-sensitive nuclear infertility has deficiencies, poor stability (sterility is greatly affected by temperature), showing a phenomenon of “playing a swing.” At the same time, most of these light-sensitive nuclear sterile lines are light-temperature-sensitive and their fertility is the most stable