高产优质两系杂交中籼稻新组合两优703的选育与应用  

Breeding and Application of New Two-line Medium Indica Hybrid Rice Combination Liangyou 703 with High Yield and Good Grain Quality

作　　者：夏加发[1] 李泽福[1] 王元垒[1] 马廷臣 

机构地区：[1]安徽省农业科学院水稻研究所安徽省水稻遗传重点开放实验室国家水稻改良中心合肥分中心,安徽合肥230031

出　　处：《杂交水稻》2016年第1期15-17,共3页Hybrid Rice

基　　金：国家"863"计划(2014AA10A604);国家科技支撑计划(2012BAD07B01)

摘　　要：两优703是安徽省农业科学院水稻研究所用自育两系不育系株选63-8S与优质两系恢复系中籼703配组育成的两系杂交中籼新组合,2012年12月通过安徽省品种审定。该组合2 a区试平均产量9.208 t/hm2,较对照Ⅱ优838增产6.63%;株型松紧适中,茎秆较粗壮;中抗稻瘟病、白叶枯病和稻曲病;米质较好,综合指标达3级食用稻品种标准;全生育期135 d左右,适宜在安徽省作一季中稻种植。Liangyou 703,derived from Zhuxuan 63-8S and Zhongxian 703,both developed by the Rice Research Institute of Anhui Academy of Agricultural Sciences,is a new two-line medium indica hybrid rice combination. In December,2012,it was released to commercial production by Anhui Provincial Crop Variety Appraisal Committee.Suitable for growing as medium rice in Anhui Province,it matures in about 135 days. In two years of regional trials of Anhui Province,it yielded 9. 208 t / hm2 on average,6. 63% higher than that of Check Ⅱ You 838. It is characteristic of good plant type with thick and sturdy stems,medium resistance to blast,bacterial blight and false smut and good grain quality meeting the 3rdclass of quality rice standards issued by the Ministry of Agriculture of China.

关 键 词：两系杂交水稻 两优703 选育 

分 类 号：S511.03[农业科学—作物学] S334