【摘要】 通过恢复系之间配组育成的早熟粳稻品种京光 6 5 1,在北京区试中增产幅度 (>10 % )和产量潜力接近当前同熟期的杂交粳稻组合 ,2 0 0 0年 4月已通过北京市农作物品种审定。该品种对一般粳稻不育系均具有良好的恢复性 ,可作为恢复系配组应用 ,有可能在早中熟优质高产新组合的选配中发挥重要作用更多还原

【Abstract】 The yield advantage (>10%) in Beijing regional trials and yield potential of the inbred japonica rice variety Jingguang 651, developed from hybridization of two restoring lines, were near to that of the present japonica hybrid rice combinations with a similar growth duration. It was registered and released in Beijing in April, 2000. It has a good restoring ability to the existing commonly-used japonica CMS lines, so it could also be used as a restorer line and play an important role in breeding of early-medium japonica hybrid rice combinations with good quality and high yield. The major characteristics including agronomic characters, growth duration, grain quality and pest resistance were also related in this paper.更多还原