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北方园艺  2014 

纳米银和硫代硫酸银预处理对减轻蜡花切花乙烯伤害的研究

, PP. 112-115

Keywords: 蜡花切花,纳米银,硫代硫酸银(STS),乙烯,花朵脱落

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Abstract:

以乙烯敏感型切花蜡花为试材,用10、20mg/L纳米银(nano-silver,NS)溶液及0.5mmol/L硫代硫酸银(silverthiosulfate,STS)溶液分别预处理蜡花切花茎基端24h,以去离子水为对照,随后移至去离子水中瓶插,并用5μL/L外源乙烯处理24h,观测瓶插期间的观赏品质、瓶插寿命和花朵脱落率。结果表明乙烯处理可加快蜡花切花失水凋萎及花朵脱落,并抑制花朵开放,而NS和STS预处理可显著减轻乙烯处理对蜡花切花的不利影响,其中以0.5mmol/LSTS处理效果最佳,10mg/LNS处理次之;另外,采用电感耦合等离子体-原子发射光谱(ICP-AES)法测定10mg/LNS和0.5mmol/LSTS溶液预处理后银(Ag)在蜡花切花体内分布发现,2种处理的茎末端、茎上部、花瓣和叶片均有Ag分布,但NS处理的茎末端Ag含量明显高于STS处理,而前者花瓣Ag含量则显著低于后者。

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