Identification and mapping of a new blast resistance gene Pi67(t) in Oryza glaberrima
作者单位：Agricultural Environment and Resources InstituteYunnan Academy of Agricultural Sciences Food Crops InstituteYunnan Academy of Agricultural Sciences
会议名称：《中国植物病理学会2019年学术年会》
会议日期：2019年
学科分类：09[农学] 0904[农学-植物保护] 090401[农学-植物病理学] 090402[农学-农业昆虫与害虫防治]
基 金：supported by National Natural Science Foundation of China(31860524)
关 键 词：Magnaporthe oryzae resistance gene Pi67(t) mapping Oryza glaberrima
摘 要：Oryza glabenima with strong resistance to biotic and abiotic stress was regarded as an excellent gene pool for Asian cultivated rice *** and utilization of favorable genes of *** would be important for broadening genetic basis of modern *** *** accessions showed highly resistance against Magnaporthe oryzae in natural blast nursery,indicating that *** could possess new blast resistance *** identify new blast resistant genes from ***,*** *** cultivar Dianjingyou 1 was crossed with accessions of ***,and then successively backcrossed with recurrent parent Dianjingyou 1 to breed introgression lines.A set of BC F introgression lines(ILs) was evaluated for blast resistance in natural blast *** resistant ILs in natural blast nursery were inoculated again with strong virulent to monogenic lines in *** resistant IL106 was selected for genetic and molecular *** a BC F population derived from a cross of IL106/Dianjingyou 1,a new dominant blast resistant gene,designated as Pi67(t),was identified and preliminarily mapped on chromosome 6 of rice flanked by SSR marker RM30 and RM345,and co-segregated with *** was found that Pi67(t) conferred a broadspectrum resistance to *** strains collected from different rice-growing *** new identified blast resistance gene Pi67(t) would be a promising gene for disease-resistant breeding.