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精胺和甲基乙二醛一双(脒基腙)对小麦幼苗抗旱性的影响

DOI: 10.3321/j.issn:1000-7091.2003.03.011, PP. 41-43

Keywords: 多胺,小麦,幼苗,抗旱性

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Abstract:

在砂培模拟干旱条件下,叶面喷施精胺(Spm)1mmol/L可提高小麦幼苗叶片相对含水量,降低质膜透性,提高抗旱性;而亚精胺(Spd)和Spm的抑制剂-甲基乙二醛一双(脒基腙)(MGBG)1mmol/L的作用相反.内源多胺含量测定表明,Spm使叶片内源腐胺(Put)、Spd和Spm含量均有所提高;而MGBG处理虽增加了内源Put含量,却降低了Spd和Spm水平.

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