100份谷子品种资源萌发期耐盐性评价及耐盐品种筛选

研究了100份谷子品种资源萌发期盐胁迫条件下芽、根的变化,并对供试材料的耐盐性进行了综合评价和等级划分,结果表明：150mmol/L的NaCl溶液是谷子萌发期耐盐筛选的最适浓度;盐胁迫条件下谷子芽受到的抑制作用小于根;100份谷子品种资源各测定指标变异系数由大到小顺序为：发芽相对盐害率>相对活力指数>相对发芽势>相对根干重>相对芽干重>相对发芽指数>相对芽长=相对根长>相对发芽率;晋育红谷、公矮6号、红钙谷和晋谷29共4个品种为综合耐盐能力强的资源。

Evaluation and Screening of Salt Tolerance in 100 Foxtail Millet at Germination Stage

The changes on buds and roots of 100 foxtail millet germplasm resources under salt stress at germination stage were studied, and they were comprehensively evaluated the salt tolerance. The results showed that 150mmol/L NaCl solution was suitable for screening salt tolerance of millet at germination stage. Under the salt stress, the millet bud was inhibited less than that of root. The order of index variation coefficient of 100 foxtail millet from big to small was: germination relative salt damage rate > relative activity index > relative germination potential > relative root dry weight > relative bud dry weight > relative germination index > relative bud length = relative root length > relative germination rate. Jinyuhonggu, Gongai 6, Honggaigu, and Jingu 29 were screened out as materials with strong salt tolerance through comprehensive analysis of various indicators.