不同调节剂浸种对苦苣菜种子萌发及幼苗生长的影响-《江苏农业科学》

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Title:: Effects of different regulators on seed germination and seedling growth of Sonchus oleraceus L.

作者:: 郭爱华; 曹媛; 吕梁学院生命科学系，山西吕梁 033000

Author(s):: Guo Aihua; et al

关键词:: 苦苣菜; 生长调节剂; 种子萌发; 幼苗; 赤霉素; 褪黑素; 2; 4-D溶液

Keywords:: -

分类号:: S636.904⁺.1

DOI:: -

文献标志码:: A

摘要:: 研究温度、浸种时间、赤霉素(GA₃)用量、褪黑素用量和2，4-D溶液用量对苦苣菜种子萌发特性及幼苗生长生理的影响，为苦苣菜选择良好的萌发和生长条件。设置不同温度、浸种时间、生长调节剂浓度处理苦苣菜种子，研究对苦苣菜发芽率、发芽势等发芽指标及苗质量、根长、苗高等生长生指标，以及对脯氨酸含量、淀粉酶活性、过氧化物酶(POD)活性等生理代谢的影响。结果表明，25 ℃、浸种6 h时，苦苣菜的种子萌发指标及幼苗生长状况显著高于其他试验组；200 mg/L GA₃溶液对苦苣菜种子萌发和幼苗生长显著有效；100 μmol/L褪黑素溶液可显著促进苦苣菜细胞生理活性物质含量的增加，脯氨酸含量、淀粉酶活性、POD活性分别较对照组高20.93 μg/g鲜质量、2.28 U、26.66 U/(g·min)；10 mg/L 2，4-D溶液可显著促进苦苣菜种子萌发和幼苗生理代谢。苦苣菜种子最适宜的萌发温度是25 ℃，最适宜的浸种时间是6 h；3种调节剂都不同程度地对苦苣菜种子萌发及幼苗生长具有促进作用，其中 200 mg/L GA₃、100 μmol/L褪黑素、10 mg/L 2，4-D溶液处理的效果最显著。

Abstract:: -

参考文献/References:

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