杂交水稻2025，Vol.40Issue(1)：44-51,8.DOI:10.16267/j.cnki.1005-3956.20240229.067
多基因聚合改良水稻骨干亲本华占的病虫抗性
Pyramiding Multiple Genes to Improve the Disease and Pest Resistances of Rice Backbone Parent Huazhan
摘要
Abstract
The rice backbone parent Huazhan was used as the research object,and molecular marker-assisted selection technology was used to polymerize the bacterial blight resistance genes Xa7 and Xa21,the brown planthopper resistance genes Bph14 and Bph15,and the lodging resistance gene SCM3.On the basis of maintaining the advantages of Huazhan in yield,rice blast resistance and combining ability,the Huazhan improved line Huazhi R11903(referred to as Zhi 903),a superior multi-resistant restorer line,was developed.The resistance to bacterial blight and brown planthopper,grain quality and lodging resistance of the Huazhan improved line were significantly better than those of Huazhan.The hybrid combinations derived from the Huazhan improved line showed the characteristics of high yield,good grain quality and strong resistance,which realized the replacement and continuation of Huazhan series of hybrid combinations and showed great commercial value.关键词
杂交水稻/多基因聚合/抗性改良/分子标记辅助选择/华占Key words
hybrid rice/multi-gene pyramiding/resistance improvement/molecular marker-assisted selection/Huazhan分类
农业科技引用本文复制引用
吴云天,程计华,王玉博,莫惠,黎长红,李宙炜,吴刚,徐志,田冰川..多基因聚合改良水稻骨干亲本华占的病虫抗性[J].杂交水稻,2025,40(1):44-51,8.基金项目
湖南省科技创新计划(2021JC0007,2022WZ1029) （2021JC0007,2022WZ1029）
