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本试验以更生霉素为诱变剂处理大麦种子，研究了其对大麦的诱变效应及其适宜浓度。试验结果表明，更生霉素不仅对大麦Ｍ１植株有生理损伤效应，而且能使Ｍ２出现大穗、早熟等性状变异。
In this experiment, we used barleycin as a mutagen to treat barley seeds and studied its mutagenic effect on barley and its suitable concentration. The results showed that dactinomycin not only had the physiological damage effect on barley M1 plants, but also caused the variation of characters such as big spike and precocity of M2.