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- W3186304889 abstract "In this study, the closely linked fluorescence molecular marker PM-Xa7 of Xa7 gene was developed on the basis of sequence difference between the resistant variety ‘IRBB7’ containing Xa7 and other nine bacterial blight susceptible rice varieties, and combine with PARMS technology (Penta-primer amplification refractory mutation system). Genotypes of Xa7 were identified in 72 rice germplasm and the bacterial blight resistance level of ‘Mei B’ was improved by backcross and screening with this marker. The results showed that two rice germplasms containing Xa7 were screened out from 72 rice germplasm; By introducing the resistant Xa7 gene from ‘IRBB7’ into ‘Mei B’ with PM-Xa7, a stable new maintainer with resistance to bacterial blight was successfully obtained. The bacterial blight resistant fluorescence signal was detected in 289 plants and the bacterial blight susceptible fluorescence signal was detected in 93 plants of BC 2 F 2 population generated from ‘IRBB7’ and ‘Mei B’, and the genotypes were consistent with the phenotypes of Xoo inoculation. These research results indicated that PM-Xa7 can be effectively used for the marker-assisted breeding of bacterial blight resistant rice variety with the resistant Xa7 gene." @default.
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- W3186304889 date "2021-01-01" @default.
- W3186304889 modified "2023-10-01" @default.
- W3186304889 title "Tibet Development and Breeding Application of the Fluorescence Molecular Marker of Rice Bacterial Blight Resistance Gene <I>Xa7</i>" @default.
- W3186304889 doi "https://doi.org/10.5376/mpb.2021.12.0023" @default.
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