【摘要】 早恢R458是江西省农业科学院水稻研究所以桂朝13号为父本,IR58为母本杂交,经过多代定向选育而成的籼型三系早稻恢复系,具有恢复力强、配合力高、千粒重大、品质优、制种产量高等特点;2009年5月通过省技术鉴定;2009年7月获植物新品种保护权。利用该恢复系所配组合通过省审或国审,江Ⅱ优赣17号(江农早IIA/R458)1999年通过江西品种审定,金优458(金23A/R458)2003年3月通过江西品种审定、2008年8月通过国家品种审定、2009年被农业部认定为超级稻,优I458(优IA/R458)2005年11月通过江西品种审定。R458系列组合推广产生了巨大的经济效益和社会效益。更多还原

【Abstract】 R458 is an indica type restorer line for early season rice,which is derived from the cross of the restorer line Guichao 13 as male and IR58 as female and was bred by the Rice Research Institute of Jiangxi Academy of Agricultural Sciences.It is characteristic of strong restoring ability,good combining ability,large thousand-grain weight,good quality,good integrated agronomic characters,high hybrid rice seed-production and so on.R458 was technically identified at a provincial level in May,2009 and got new plant variety protective right in July,2009.JiangIIyougan 17(Jiangnongzao II A/R458) was registered by the Jiangxi Provincial Crop Variety Appraisal Committee in 1999.Jinyou458(Jinyou 23 A/R458) was registered by the Jiangxi Provincial Crop Variety Appraisal Committee in 2003 and certified to release for commercial production by the National Crop Variety Appraisal Committee in 2008 and was identified as super rice by Ministry of Agriculture in 2009.You I 458(You I A/ R458) was registered by the Jiangxi Provincial Crop Variety Appraisal Committee in 2005.Large scale extension of serial combination of R458 has produced great economical and social benefits.更多还原