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[目的]阐述离子束诱变植物的数量性状。[方法]调查了离子束诱变小麦同一母本后代的特殊变异表型、农艺性状、蛋白质和湿面筋含量。[结果]有的个体表现出形态学多样性。株高、穗长和蛋白质含量受离子束显著影响,有效分蘖数和湿面筋含量受到轻微影响。多重比较表明各组性状存在不稳定性。[结论]离子束辐射呈现多样性和不定向性的特点,可以对同一突变体造成多种变异。后代性状的不稳定性暗示同一辐射区域的细胞也可能有不同命运。特定性状可能要经过数代才会稳定。离子束辐射效应可能是直接辐射损伤、间接辐射损伤和旁观者效应和自适应效应的综合效应。
[Objective] To describe the quantitative trait of ion beam mutagenesis plants. [Method] The special mutant phenotype, agronomic traits, protein and wet gluten content of offspring of the same female parent of ion beam mutagenesis were investigated. [Results] Some individuals showed morphological diversity. Plant height, spike length and protein content were significantly affected by ion beam, with effective tillers and wet gluten content slightly affected. Multiple comparisons showed instability in each trait. [Conclusion] The characteristics of ion beam radiation showing diversity and orientation can cause many variations on the same mutant. The instability of offspring traits suggests that cells in the same radiation area may also have different fates. It may take a few generations before a particular trait stabilizes. The effects of ion beam radiation may be the combined effects of direct radiation damage, indirect radiation damage and bystander effect and adaptation effect.