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- W2357009005 abstract "【Objective】A preliminary study was made on the cytological effects of space flight and azide mutations in the root-tip cells of the M1 generation in rapeseed(Brassica napus L).【Method】Five materials were mutated with single or combined treatments by space flight(Satellite ‘Shi-Jian 8’,2006) and sodium azide(NaN3).Mitotic index,rate of chromosome aberration and rate of micronuclei were observed microscopically.【Result】The results showed that the mitotic index increased by space flight,and it obviously decreased in the root-tip cells of combined treatments compared with single treatment by space-flight.The rate of chromosome aberration was evidently higher in combined treatment than in single treatments.The rates of micronuclei were all comparatively high in the studied treatments,especially in space mutation.However,the rates of chromosome aberration and micronuclei were effectively reduced by azide treatment.It seemed that azide treatment was favorable for repair of space mutation damage.【Conclusion】It is concluded that real cytological mutations are induced in the materials by space flight and sodium azide.The mutagenic effects are equal in male sterile lines and the maintainer lines." @default.
- W2357009005 created "2016-06-24" @default.
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- W2357009005 date "2008-01-01" @default.
- W2357009005 modified "2023-09-28" @default.
- W2357009005 title "Cytological Effects of Mutation on Root-tip Cells in Rapeseed (Brassica napus L.) by Space Flight and Sodium Azide" @default.
- W2357009005 hasPublicationYear "2008" @default.
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