纳米银对瓶插月季切花乙烯作用的拮抗效应  

Nano-silver Treatments Alleviated the Harmful Effects of Exogenous Ethylene on Cut Roses

作　　者：黄新敏[1] 林启灵[1] 冼锡金[1] 刘季平[1] 李红梅[1] 何生根[1] 

机构地区：[1]仲恺农业工程学院生命科学学院,广州510225

出　　处：《园艺学报》2012年第4期735-742,共8页Acta Horticulturae Sinica

基　　金：国家自然科学基金项目(31071829;30771519);广东省自然科学基金项目(10151022501000035;8251022501000002)

摘　　要：以月季‘影星’(Rosa hybrida‘MovieStar’)切花为试材,用5、10和30mg·L-1纳米银(nano-silver,NS)溶液,0.5mmol·L-1硫代硫酸银(silver thiosulfate,STS)溶液和去离子水(对照)分别预处理花枝(长为25cm)基端2h后再移至去离子水中瓶插,之后用10μL·L-1外源乙烯处理24h,观测切花瓶插期间的观赏品质,瓶插寿命,花径和花枝鲜样质量等指标的变化。结果表明:乙烯处理可加快切花失水凋萎及叶片脱落,并抑制花朵开放,而NS处理可显著减轻乙烯处理的不利影响,其中以30mg·L-1NS处理效果最佳,该处理月季切花的瓶插寿命比乙烯处理延长7d。另外,取月季切花的花朵(带5cm花茎,无叶)进行上述试验,进一步证实乙烯处理可抑制花朵开放,而NS处理可显著减轻乙烯对花朵开放的抑制作用。To study the anti-ethylene effects of nano-silve（rNS）treatments on cut-flowers rose（sRosa hybrida‘Movie Star’）,the cut flowering stems（25 cm long）were pre-treated for 2 h with NS（5,10 and 30 mg · L-1）or silver thiosulfate（STS,0.5 mmol · L-1）solution with de-ioned（DI）water as control, thereafter they were immediately placed in vases containing DI water and then exposed to 10 μL · L-1 ethylene for 24 h. The changes in ornamental quality,vase life,flower diameter and fresh mass of cut roses during their vase period were investigated. The results showed that exogenous ethylene treatment caused quick wilting of flowers and leaves,early abscission of leaves and obvious inhibition in flower opening of cut roses,thus seriously affected their ornamental quality and shortened the vase life. NS treatments could significantly alleviated above harmful effects of exogenous ethylene on cut roses,the treatment with 30 mg · L-1 NS was the best among all treatments,which extended the vase life by 7 d compared with the ethylene treatment. Additionally,the similar experiments using the detached flowers from cut roses（with 5 cm stem and without leaves）further certified that NS treatments could effectively alleviate the inhibition in flower opening owing to exposure to exogenous ethylene.

关 键 词：月季 切花 纳米银 乙烯 花朵开放 

分 类 号：S685.12[农业科学—观赏园艺]