Study on Breeding and Utilization of Aromatic Soft Rice Restorer ‘Wenhui247'

A new aromatic soft hybrid rice restore line Wenhui 247 with rich aromatic,strong restore ability,high combining ability,disease resistant and japonica relatives was successfully selected for the first time and protected by the authority of national new varieties. It was developed through crossing the high quality Dianlong 201 which was the affinity with the local variety Howe muxi in Yunnan aromatic soft rice and restorer line Minghui 63,then and Dalixiang 12 with resistance to rice blast and japonica relatives. Finally we gathered genes with different kinds of characters,including aromatic rice,soft rice,strong restore ability,high combining ability,rice blast resistance and so on,and treat with strict add generation separation and selection. Teyou 247 was developed from the cross of the CMS line Longtepu A and the restorer line Wenhui 247 by author,was a new medium indica hybrid rice combination with naturally aromatic mixed type,high yield,strong resistance and high adaptability,and certified and released to commercial production by Yunnan Provincial Crop Variety Appraisal Committee in January,2010. The aromatic trait of Wenhui247 was controlled by double recessive gene,and the quality of rice met the second class of state of fine quality rice,the amylase contents was 16. 7 %,which was the good donor material of aromatic and soft rice genes for the breeding of aromatic soft hybrid rice restore line.