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Microsatellite analysis for revealing parentage of gamma ray-induced mutants in rice (Oryza sativa L.)

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We previously demonstrated that mutants induced from pure lines with quality assurance had microsatellite (or simple sequence repeat, SSR) genotypes almost identical to their parent varieties, and genetic variants derived from accidental out-crossing might be selected as "mutants" in rice. In the present study, fourteen previously developed rice mutant lines were analyzed for their SSR genotypes in parallel with their respective parents. Among them, eleven mutant lines had SSR genotypes identical to their parents; however, three mutant lines, i.e., Os-lpa-XS110-1, Huangyu B, and Zhu I, had 4.3, 6.6, and 9.1% of SSRs different from their parents, respectively. Additional analysis proved that Huangyu B was mistakenly recorded in the development process and should be a mutant line of another variety, II 32 B; Zhu I very probably resulted from an out-crossing rather than from mutagenesis. The implications of our findings are discussed in the context of induced mutantfacilitated gene discovery.

Affiliations: 1: IAEA-Zhejiang University Collaborating Center, National Key Laboratory of Rice Biology and Key Laboratory of Chinese Ministry of Agriculture for Nuclear-Agricultural Sciences, Institute of Nuclear Agricultural Sciences, Zhejiang University ; 2: Jiaxing Academy of Agricultural Sciences ; 3: IAEA-Zhejiang University Collaborating Center, National Key Laboratory of Rice Biology and Key Laboratoryof Chinese Ministry of Agriculture for Nuclear-Agricultural Sciences, Institute of Nuclear Agricultural Sciences, Zhejiang University ; 4: Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, International Atomic Energy Agency

10.1560/IJPS.55.2.201
/content/journals/10.1560/ijps.55.2.201
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/content/journals/10.1560/ijps.55.2.201
2007-05-13
2018-06-21

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