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Identification and Genetic Analysis of Gall Midge Resistance in Rice Germplasm 91-1A2 |
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| Authors: | LU Jia-shi HE Long-fei XU Jing XU Chun-yan LI Chuang-zhen WEI Su-mei SU Jian-mu |
| Institution: | 1. College of Agronomy, Guangxi University, Nanning 530004, China; Flower Research Institute, Guangxi Academy of Agricultural Science, Nanning 530007, China 2. College of Agronomy, Guangxi University, Nanning 530004, China 3. Plant Protection Research Institute, Guangxi Academy of Agricultural Science, Nanning 530007,China |
| Abstract: | Resistance to rice gall midge in rice germplasm 91-1A2 was identified and genetically analyzed. F1s of rice population were derived from 91-1A2 which crossed with rice materials Jinggui, TN1, W1263 (Gm1), IET2911 (Gm2), BG404-1 (gm3), OB677 (Gm4), ARC5984 (Gm5) and Duokang 1 (Gm6) as a male parent. The resistance of all parental lines and F1, BC1F1 and F2 populations to rice gall midge was identified. The results showed that 91-1A2 and all F1s were resistant to Chinese rice gall midge biotype IV. The segregation ratio of resistant plants to susceptible ones in BC1F1 and F2 were accorded with 1:3 and 9:7 rules by X2 test, suggesting that the resistance of 91-1A2 to Chinese rice gall midge biotype IV was controlled by two dominant genes which were new resistance genes, non-allelic to the known rice gall midge resistance genes. |
| Keywords: | rice rice gall midge resistance gene genetic analysis |
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