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盐胁迫对鸢尾种子萌发的影响
引用本文:张立磊,王少平.盐胁迫对鸢尾种子萌发的影响[J].安徽农业科学,2012,40(32):15626-15627.
作者姓名:张立磊  王少平
作者单位:河南科技学院,河南新乡,453003;河南科技学院,河南新乡,453003
摘    要:目的]考察鸢尾(Iris tectorum)种子在盐胁迫状态下的发芽情况。方法]用5个不同浓度NaCl溶液浸泡鸢尾种子,在25℃±1℃环境下进行盐胁迫发芽试验,测定发芽率、发芽势、发芽指数等指标。结果]鸢尾是盐敏性植物,盐胁迫使鸢尾种子的发芽率、发芽势、发芽指数明显降低,而且随着盐溶液浓度的增加,抑制作用增强。当盐浓度大于2 g/L时,明显延迟种子发芽时间;在盐浓度为10g/L时,发芽率仅能达19.23%,且高浓度下的发芽质量较差。结论]该研究可为鸢尾植物的广泛应用提供有力的理论依据。

关 键 词:鸢尾  盐胁迫  种子萌发

Influences of Salt Stress on the Seed Ger mination of the Iris tectorum
Institution:ZHANG Li-lei et al(Henan Institute of Science and Technology,Xinxiang,Henan 453003)
Abstract:Objective] In order to study the Iris tectorum seed under salt stress conditions of ger mination conditions.Method] Different concentrations of NaCl solution were used to soak Iris tectorum seed at 25 ℃±1 ℃ for the ger mination test,then ger mination percentage,ger mination potential and ger mination index were deter mined.Result] The results showed Iris tectorum was salt sensitive plants,salt stress forced Iris tectorum seed ger mination percentage,ger mination potential,ger mination index significantly to reduce,and with the increase of salt concentration,the inhibition enhanced.When the salt concentration was 2 g/L,it significantly delayed ger mination time;when the salt concentration was 10 g/L,ger mination rate only reached 19.23%,and under high concentrations the ger mination quality was poor.Conclusion] The study provides a powerful and theoretical basis for application of Iris tectorum in a large scale.
Keywords:Iris tectorum  Salt stress  Seed ger mination
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