摘要
将分子标记辅助选择技术与传统育种的杂交、回交方法及白背飞虱频发区大田自然诱发抗虫鉴定相结合,创制了米质优、配合力好且具有水稻白背飞虱拒食抗性主效QTL位点qSI4的新恢复系材料3份(R38、R46和R58)。室内抗性鉴定结果表明,新创制的恢复系材料的白背飞虱抗性与抗源春江06的抗性水平相当,具有较强的白背飞虱抗性。这些新恢复系通过与不同遗传背景的不育系进行杂交配组,经过田间测产和室内米质鉴定、评比,筛选出一批集抗性好、米质优、产量高等优良性状于一体的杂交水稻新组合。
The whitebacked planthopper （WBPH, Sogatella furcifera） affects rice production and threatens food security in the world. It is very important to breed hybrid rice restorer lines with WPBH resistance for rice production. The WBPH resistance locus qSI4 from GL77 and GL84 were introduced into the susceptible restorer lines by molecular markerassisted selection （MAS）, traditional breeding methods and WBPHresistance identification in multiple fields. Three improved lines of R38, R46 and R58, conferring WBPH resistance and with good agronomic characteristics were obtained by molecular marker test for the target genes and different parental genetic background analysis. The results indicated that the WBPH resistance of these new restorer lines with qSI4 was not significantly different to that of Chunjiang 06. New hybrid rice combinations with WBPH resistance, high quality and high yield were bred.
出处
《中国水稻科学》
CAS
CSCD
北大核心
2013年第3期329-334,共6页
Chinese Journal of Rice Science
基金
国家863计划资助项目(2011AA10A101)
国家转基因农作物新品种培育重大专项(2009ZX08001-003B)
福建省农业科学院青年创新基金资助项目(2010QC-9)
关键词
杂交水稻
恢复系
白背飞虱
分子标记辅助选择
育种
hybrid rice restorer line white-backed planthopper marker-assisted selection breeding
