Nano-silver pulse treatments improve water relations of cut rose cv. Movie Star flowers
Nano-silver pulse treatments improve water relations of cut rose cv. Movie Star flowers
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纳米银脉冲处理可改善切花玫瑰的水分关系。
DOI：
10.1016/j.postharvbio.2010.04.003
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发表时间：
2010-09-01
影响因子：
7
通讯作者：
Joyce, Daryl C.
中科院分区：
文献类型：
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作者：
Lue, Peitao;Cao, Jinping;Joyce, Daryl C.
采用纳米银（NS）溶液（直径2-5 nm）脉冲处理对月季切花瓶插寿命的影响。电影星星花被调查。50、100和250 mg L ~（-1）NS脉冲处理1h。然后将茎转移到去离子水（DI）中，每天评估瓶插寿命和质量。250 mg L ~（-1）NS脉冲处理对植物有毒害作用。然而，脉冲处理1小时，50和100毫克L-1 NS解决方案延长瓶插寿命和抑制鲜重减少在瓶插期间。生理盐水处理使切花的吸水量和失水量减少。茎导水率随时间的推移而下降，但这种下降被抑制50和100 mg L-1 NS脉冲处理。ICP-AES分析表明，茎基端的银浓度普遍高于茎上端、叶和花瓣。NS脉冲处理降低气孔开度，抑制叶片蒸腾。它们还延迟了水通道蛋白基因Rh-PIP 2的表达。这些明显的有益效果NS脉冲治疗进行了讨论。(C)2010 Elsevier B. V.保留所有权利。
Effects of pulse treatments with nano-silver (NS) particle (2-5 nm diam) solutions on the vase life of cut rose cv. Movie Star flowers were investigated. Pulse treatments of NS at 50, 100 and 250 mg L-1 were for 1 h. Stems were then transferred to deionized water (DI) and evaluated daily for vase life and quality. The 250 mg L-1 NS pulse treatment was phytotoxic. However, pulse treatments for 1 h with 50 and 100 mg L-1 NS solutions extended vase life and suppressed reduction in fresh weight during the vase period. The amounts of water uptake and water loss by the cut flowers decreased upon NS treatment. Stem hydraulic conductance decreased with time, but this decrease was suppressed by pulse treatments of 50 and 100 mg L-1 NS. ICP-AES analyses revealed that the Ag concentration in basal stem ends was generally higher than in upper stem ends, leaves and petals. NS pulse treatments reduced stomatal aperture and inhibited leaf transpiration. They also delayed expression of the aquaporin gene, Rh-PIP2. These evidently beneficial effects of NS pulse treatments are discussed. (C) 2010 Elsevier B.V. All rights reserved.