The breeding of a new rice vatiety Yuan-feng-zhan with high yield,diseases resistance and high grain quality

Yuan-feng-zhan was a new photoperiod-insensitive Indica rice variety breeding by crossing the Feng-si-zhan with a strain(xiang-si-miao126/xiang-ya-ruan-zhan) and after seven generations selecting in Rice Research Institute,Guangdong Academy of Agricultural Sciences.In two years different site field test of Guangdong province,the result showed that Yuan-feng-zhan ’s average yield was 424.85 kg and 434.32 kg per 667m2 respectively,it was increased by 4.7% and 6.03% over check variety You-you-122,it was not significant and significant.Its grain quality reached third and second scales of high quality paddy in national and province standard,and it had the high-resistance to the blast and mid-resistance to the bacterial leaf blight disease.It was permitted to release by crop examine and approve committee of Guangdong province in May 2010.