高产优质三系杂交中籼新组合Ⅱ优0128的选育与应用研究

Breeding and Application of Ⅱ You 0128,A New Three-line Medium Indica Hybrid Rice Combination with High Yield and Fine Grain Quality

II优0128是安徽省农业科学院水稻研究所用II-32A与自育优质恢复系R0128配组育成的三系杂交中籼新组合,具有高产、优质、适应性强等优点。2年区试平均产量9.416 t/hm2,较对照II优838增产7.08%;1年生产试验平均产量8.955 t/hm2,较对照II优838增产6.10%。株型较紧凑,茎秆较粗壮;抗稻瘟病,中抗白叶枯病、纹枯病和稻曲病。米质较好,综合指标达三级食用稻等级标准。全生育期138 d左右,适宜在长江中下地区作一季中稻种植。

II you 0128 is a new three-line medium indica hybrid rice combination with high yield and fine grain quality, developed from the CMS line II-32A crossed to a restorer R0128 which bred by Rice Research Institute of Anhui Academy of Agricultural Sciences. In Anhui pro- vincial regional plot tests during 2008 - 2009, its average yield was 9. 416 t/hm^2 which was 7.08% higher than that of check variety, II You 838. In Anhui provincial production trial of 2010, it yielded 8. 955 t/hm^2 which was 6.1% higher over II You 838. It was also characterized by resistance to rice blast, moderate resistance to bacteria leaf blight, sheath blight and rice flash smut. Its grain quality met the third grade of quality rice standard issued by Ministry of Agricultural of China. The whole growth period is about 138 d and is suitable for planting in the mid- dle and lower Yangtze Region as middle-season flee.