Screening of Rice Germplasm for Bakanae Disease Resistance in Rice
2016
Hur, Y.J., NICS, RDA, Milyang, Republic of Korea | Lee, S.B., NICS, RDA, Milyang, Republic of Korea | Shin, D., NICS, RDA, Milyang, Republic of Korea | Kim, T.H., NICS, RDA, Milyang, Republic of Korea | Cho, J.H., NICS, RDA, Milyang, Republic of Korea | Han, S.I., NICS, RDA, Milyang, Republic of Korea | Oh, S.H., NICS, RDA, Milyang, Republic of Korea | Lee, J.Y., NICS, RDA, Milyang, Republic of Korea | Son, Y.B., NICS, RDA, Milyang, Republic of Korea | Lee, J.H., RDA, Jeonju, Republic of Korea | Kwon, T., Dong-A University, Busan, Republic of Korea | Park, N.B., NICS, RDA, Yeongdeok, Republic of Korea | Kim, S.Y., NICS, RDA, Yeongdeok, Republic of Korea | Song, Y.C., NICS, RDA, Milyang, Republic of Korea | Nam, M.H., NICS, RDA, Milyang, Republic of Korea | Kwon, Y.U., NICS, RDA, Milyang, Republic of Korea | Park, D.S., NICS, RDA, Milyang, Republic of Korea
Bakanae (foolish seedling) disease caused by Gibberella fujikuroi creates serious problems in the foremost rice growing countries. This study was conducted to identify new resistance genetic sources to Bakanae disease. Bioassay showed that 11 varieties including Gwangmyeongbyeo, Hawn, Wonseadaesoo, Erguailai etc. were resistant to bakanae disease among 254 rice germplasm. Mismatch ratio between phenotype on bakanae disease bioassay and allele type of RM9, a SSR marker closely linked the bakanae disease resistant QTL, qBK1, were 38.3%. These results suggest that RM9 might be used for selecting qBK1, but it cannot be used for wide range of rice germplasm. Resistant germplasm in this study might be have resistant genes different from qBK1. The eleven varieties resistant to selected in this study will be used to identify new resistant alleles or genes to improve bakanae disease resistance in rice.
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