Application of Indica Hybrid Rice Restorer Line Minghui77

Successful breeding and application of the restorer line Minghui77 had changed a relatively single situation and played the role in the renewal of the early maturing restorer line application in China. Up to 2010, there were 11 combinations of hybrid rice approved by the national and provincial crop variety registration committee, which were bred from Minghui77. And three of them were approved by the national authorities in China. The statistics indicated that the total planting area of hybrid rice combinations derived from Minghui77 was 7.4467 million hectares, and the output of rice was increased by 3.6 billion kilograms. Furthermore, Minghui77 was an important backbone parent to breed early maturing restorer lines. Up to 2011, 24 new restorer lines were successfully bred from Minghui77 as the main parent in China. 34 combinations of hybrid rice with these new restorer lines were approved by the national and provincial crop variety registration committee. The total planting area of them was 504 thousand hectares in China from 2005 to 2010, and the output of rice was increased by 107.32 million kilograms. Finally, the author discussed the reason that Minghui77 was widely utilized. The strong restoring ability, broad restoring spectrum, high combining ability, obvious heterosis of hybrid combinations, high rice yield, excellent adaptability, good resistance to rice blast, super grain quality and so on good characteristics can explain the reason for the large produce area of Minghui77.