Genetic Analysis and Preliminary Mapping of Two Recessive Resistance Genes in Rice to Brown Planthopper, Nilaparvata lugens
HOU Li-yuan1，2, YU Ping1, XU Qun1, YUAN Xiao-ping1, YU Han-yong1, WANG Yi-ping1, WANG Cai-hong1, WAN Guo1，2, PENG Suo-tang2, *, WEI Xing-hua1, *
1State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 310006, China; 2College of Agronomy, Shanxi Agricultural University, Taigu 030801, China; * Corresponding author, E-mail: email@example.com
An F2 population was derived from the cross of the brown planthopper resistant line WB01, an introgression line of common wild rice (Oryza rufipogon Griff.) from Hainan Province, China and the susceptible indica cultivar 9311. The population with 303 lines was genotyped using 141 simple sequence repeat (SSR) markers and used for gene mapping. Two softwares, MapMaker/Exp 3.0 and Windows QTL Cartographer 2.0 were applied to detect QTLs. Totally, two QTLs on chromosomes 4 and 8 were detected. Each of these QTLs individually explained 11.3% and 14.9% of the phenotypic variations, respectively.
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