摘要
为了改变香稻两用核不育系琼香-1S不抗白叶枯病的缺点,通过搭载返回式卫星将琼香-1S种子送入太空,在多种特殊综合因素作用下诱发突变。调查SP0、SP1、SP2、SP3和SP4代的主要农艺性状;利用不同SSR引物进行分子水平检测,检测到11份太空诱变后代(SP4代)与留地原种琼香-1S的DNA扩增条带存在差别,说明香稻两用核不育系琼香-1S发生了变异。并对琼香-1S及其变异后代(SP4代)进行白叶枯病抗性鉴定,筛选出免疫、高抗、抗白叶枯病的不育材料,对于更好地选育优质抗病水稻新组合具有较大实际生产意义。
To change the defaults such as having no resistance to bacterial leaf blight of dual purpose nucleus sterile line aromatic rice Qiongxiang-1S,seeds were sent into space by recoverable satellite,and mutated through the function of peculiar comprehensive factors.Some major agro-traits of the progenies SP0,SP1,SP2 and SP3 and SP4 derived from Qiongxiang-1S were investigated.According to the molecular level tests conducted by SSR markers,the amplified bands of 11 space mutated progenies(SP4) was different from that of control,indicating that mutation had happened in Qiongxiang-1S.The resistance of Qiongxiang-1S and its mutated progenies(SP4) to bacterial leaf blight was identified to select materials with high resistance.The study had great practice significance in breeding high quality disease resistant rice combination.
出处
《湖北农业科学》
北大核心
2013年第1期22-24,共3页
Hubei Agricultural Sciences
基金
2008年海南省自然科学基金项目(30832)
关键词
香稻
核不育系
琼香-1S
空间诱变
白叶枯病
鉴定
aromatic rice
nucleus sterile line
Qiongxiang-1S
space mutation
bacterial leaf blight
identification