利用鄂早18 Ghd7基因型改良扬稻6号生育期效应的研究  

Study on the Growth Period of Yangtao 6 Improved by Ghd7 Genotype of E′zao 18

作　　者：杜雪树[1] 夏明元[1] 李进波[1] 戚华雄[1] DU Xue-shu;XIA Ming-yuan;LI Jin-bo;QI Hua-xiong(Institute of Food Crops,Hubei Academy of Agriculture Sciences/Hubei Key Laboratory of Food Crop Germplasm Innovation and Genetic Improve,Wuhan 430064,China)

机构地区：[1]湖北省农业科学院粮食作物研究所/粮食作物种质创新与遗传改良湖北省重点实验室,武汉430064

出　　处：《湖北农业科学》2018年第23期27-31,共5页Hubei Agricultural Sciences

基　　金：国家重点研发计划"七大作物育种"重点专项(2017YFD0100300);农业部华中作物有害生物综合治理重点实验室作物重大病虫草害防控湖北省重点实验室开放基金项目(2016ZTSJJ2)

摘　　要：利用生产上广泛应用的早稻(Oryza sativa L.)鄂早18作为Ghd7的供体,优良的中稻恢复系扬稻6号作为轮回亲本,通过回交和自交构建了一系列群体,在分离世代使用与Ghd7紧密连锁的SSR标记RM5436进行分子标记检测,并结合田间农艺性状,得到了一批不同回交世代的株系。最终选择部分农艺性状与扬稻6号相近的株系,考察其抽穗期、株高、有效穗数、穗长、每穗粒数、结实率、千粒重、单株产量(即单株粒重)等一系列农艺性状,评价了Ghd7基因在水稻生育期改良中的效果及对水稻其他农艺性状的影响。Using early rice(Oryza sativa L.)widely used in production E′zao 18 as a donor of Ghd7 and taking the excellent mid-season recovery rice the department Yangdao 6 as the recurrent parent,a series of groups were constructed by backcross and self-crossing.Molecular marker detection using SSR marker RM5436 closely linked to Ghd7 in separation generation,combined with agronomic characters in the field,a number of strains with different backcross generations were obtained.Finally,some lines with similar agronomic characters to Yangdao 6 were selected.A series of agronomic characters such as heading date,plant height,effective ear number,panicle length,grain number per panicle,seed setting rate,1000-grain weight,yield per plant(i.e.grain weight per plant)were investigated.The effect of Ghd7 on the improvement of rice growth stage and its effect on other agronomic characters were evaluated.

关 键 词：水稻(Oryza SATIVA L.) 扬稻6号 鄂早18 Ghd7基因 生育期 

分 类 号：S511[农业科学—作物学] S334