Inheritance of Aroma of Good-quality Indica Type Rice PTGMS Line GHS and Its Application in Hybrid Rice Breeding  

香稻不育系GHS香味遗传及其杂交育种研究（英文）

作　　者：郭国强[1,2] 尹建英 郭武强[3,4] 曾良贵 黄益国 高静 阳小虎 郭名奇 

机构地区：[1]衡阳市农科所,湖南衡阳421000 [2]湖南农业大学农学院,湖南长沙410125 [3]国家杂交水稻工程技术研究中心,湖南长沙410125 [4]湖南隆平种业有限公司,湖南长沙410125

出　　处：《Agricultural Science & Technology》2015年第6期1121-1125,共5页农业科学与技术（英文版）

基　　金：Supported by Province-City Joint Funds of Natural Science of Hunan Province(14JJ5025);Key Program of Hengyang City(2011KZ15,2013KN01);General Program of Hengyang City(2010KN02);Hengyang Comprehensive Experimental Station of National Rice Industry Technology System(CARS-01-03A)~~

摘　　要：The inheritance of aroma of GHS was studied by crossing GHS with non-aromatic lines 9311, Xianhui 207, Yuefengzhan, Taihuangzhan, Yuexiangzhan and aromatic lines Yuxiangyouzhan, Xiangwanxian 17, Tianlongxiang 103, Xinwanxiang and Chuangxiang 5. For the grains of F1 generation, the performance of aroma was tested by chewing method, while for the plants of generations of F1, F2 and BC1 F1, the performance of aroma was tested by KOH solution method. The results showed that the non-aroma of restorer line is a dominant trait, but the aroma of GHS line is a recessive trait; the aroma genes of GHS, Yuexiangzhan and Xiangwanxian 17 were non-al elic; the aroma genes of GHS, Yuxiangyouzhan, Tianlongxiang 103, Xin-wanxiang and Chuangxiang 5 may have the same al elic loci. Among the combinations of GHS and non-aromatic restorer lines, the non-aromatic to aromatic ratios of the F2 plants and the BC1 F1 plants were 3∶1 and 1∶1, respectively, and the inheritance of aroma of GHS was control ed by a pair of recessive nuclear genes. In hybrid rice breeding, using GHS, Qiongxiang S has been bred out, and a series of aro-matic hybrid rice combinations have also been selected. Among the hybrid combi-nations, Qiongxiangliangyou 1, Qiongxiangliangyou 2 and other high-yielding and high-quality combinations have been approved by provincial government, and they have good application prospects.以香稻不育系GHS与无香味恢复系和香稻品种杂交,采用咀嚼法测定杂交组合F1米粒和KOH溶液法测定杂交组合F1、F2、BC1F1植株的香味遗传特点。结果表明,恢复系无香味为显性性状,GHS的香味为隐性性状;GHS的香味基因与粤香占、湘晚籼17号的香味基因不等位;GHS的香味基因与玉香油占、天龙香103、新万香、创香5号香味基因可能存有等位位点。与无香味恢复系杂交组合F2植株群体无香味与有香味之比符合3∶1的分离比,BC1F1植株群体符合1∶1的分离比,GHS的香味遗传受1对隐性核基因控制。在杂交水稻育种中,利用GHS系统选育出琼香S,并选配出一批香型杂交稻组合,其中琼香两优1号、琼香两优2号等高产优质组合已通过省级审定,具有较好的应用前景。

关 键 词：RICE AROMA INHERITANCE BREEDING 

分 类 号：S511[农业科学—作物学]