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利用3.2—75MeV/u4个能量、2×108—12×108cm–24个剂量的O和C重离子处理3个冬小麦品种,1612研究其诱变效应。结果表明,M1代的生物损伤随剂量的增加而加大;8MeV/u能量的损伤要比高能75MeV/u时大;8MeV/u较易出现在高能75MeV/u离子和γ辐射中未见的条状叶绿素缺失损伤,此结果未见相关报导。M2代诱变效果显著,突变谱宽,有益突变(早熟、矮杆、穗形)频率明显高于γ射线,且较易诱发早抽穗性状变异。
Three winter wheat cultivars were treated with 4 doses of 3.2-75 MeV / u energy and 2 × 108-12 × 108 cm-24 doses of O and C heavy ions, and the effect of mutagenesis was investigated by 1612. The results showed that the biological damage of M1 generation increased with the increase of dose; the damage of 8MeV / u energy was larger than that of high energy 75MeV / u; 8MeV / u was more likely to appear in high energy 75MeV / u ion and γ radiation Striped chlorophyll-deficient lesions, no relevant reports of this result. The mutagenesis effect of M2 generation was significant, the mutation spectrum was broad, the frequency of beneficial mutation (premature, dwarf bar, spike) was obviously higher than that of γ-ray, and it was easier to induce the variation of early heading characters.