LIU Ji-ping,ZHANG Zhao-qi,LI Hong-mei,et al.Pretreatments With Nano-silver and STS Alleviated the Harmful Effect of Exogenous Ethylene on Cut Waxflowers[J].Northern Horticulture,2014,38(12):112-115.
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
- Title:
- Pretreatments With Nano-silver and STS Alleviated the Harmful Effect of Exogenous Ethylene on Cut Waxflowers
- 文章编号:
- 1001-0009(2014)12-0112-04
- 关键词:
- 蜡花切花; 纳米银; 硫代硫酸银（STS）; 乙烯; 花朵脱落
- Keywords:
- cut waxflower; nano-silver; silver thiosulfate; ethylene; flower abscission
- 分类号:
- S 681.5
- 文献标志码:
- A
- 摘要:
- 以乙烯敏感型切花蜡花为试材，用10、20 mg/L纳米银（nano-silver，NS）溶液及0.5 mmol/L硫代硫酸银（silver thiosulfate，STS）溶液分别预处理蜡花切花茎基端24 h，以去离子水为对照，随后移至去离子水中瓶插，并用5 μL/L外源乙烯处理24 h，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0.5 mmol/L STS处理效果最佳，10 mg/L NS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10 mg/L NS和0.5 mmol/L STS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。
- Abstract:
- Taking cut waxflowers which was highly sensitive to ethylene as material,they were pretreated for 24 h with 10 and 20 mg/L nano-silver (NS) or 0.5 mmol/L silver thiosulfate (STS) solution and using de-ioned (DI) water as control,then immediately placed in vases containing DI water,and exposed to 5 μL/L ethylene for 24 h.The changes in ornamental quality,vase life and flower abscission rate of cut waxflowers during their vase period were investigated.The results showed that exogenous ethylene treatments caused quick wilting and abscission of flowers and obvious inhibition in flower opening of cut waxflowers.Both NS and STS pretreatments could significantly alleviate above harmful effects of exogenous ethylene on cut waxflowers,and the STS treatment was the best and 10 mg/L NS treatment was in second place.Additionally,the distribution of Ag in cut waxflowers after pretreated with 10 mg/L NS and 0.5 mmol/L STS,determined by Inductively Coupled Plasma-Atomic Emission Spectrometry (ICP-AES),demonstrated that Ag could be found in stem end,top of stem,petals and leaves of cut waxflowers pretreated with both STS and NS.However,Ag content in stem end of cut waxflowers pretreated with NS was significantly higher than with STS,while Ag content in their petals of the former was significantly lower than that of the latter.
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备注/Memo
第一作者简介：刘季平（1982-），女，博士，实验员，研究方向为切花采后生物学。E-mail：liujipingpipi@163.com.
责任作者：何生根（1965-），男，博士，教授，研究方向为观赏植物生物学。E-mail：howtoroot@163.com.
基金项目：国家自然科学基金资助项目（31071829，31272193）；
广东省自然科学基金资助项目（10151022501000035，S2012010010418）；
广东省高校优秀青年创新人才培育计划资助项目（2012LYM0079）。
收稿日期：2014-01-17