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化学药剂对月季切花瓶插寿命的影响 总被引：4，自引：0，他引：4
为了研究预处理和瓶插液配方对月季切花瓶插寿命的影响,通过对瓶插期间月季切花的形态变化的观察,进行了保剂配方试验。结果表明,化学药剂能明显缓解月季切花水分胁迫,改善体内水分平衡,能不同程度的延长瓶插寿命。通过对几十种保鲜剂的研究和筛选,选择出2－3种具有良好保鲜效果的保鲜剂。 相似文献
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以芍药‘春晓’（Paeonia lactiflora‘Chunxiao’）的切花为试验材料,采用室内瓶插的方法。在基本瓶插液（3％蔗糖＋200mg/L8-羟基喹啉＋150mg／L柠檬酸）中分别添加不同浓度赤霉素、青霉素,通过对其外部形态和衰老过程中生理生化指标的测定,探讨了赤霉素、青霉素对芍药切花采后瓶插品质的影响。结果表明,适宜浓度的赤霉素、青霉素可有效提高切花的SOD、CAT活性,降低02-生成速率、MDA含量,减少活性氧对切花的伤害;改善切花的水分平衡值,降低脯氨酸含量,减少水分胁迫对切花造成的伤害;增加可溶性蛋白质含量,为切花提供能源物质,从而延缓衰老,延长瓶插寿命,改善切花瓶插期间的观赏品质。青霉素100mg／L 处理的效果最佳,瓶插寿命比对照延长2．5d。 相似文献
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<正>为延长切花的瓶插寿命,花卉种植者一直在持续不断地与花卉的自然特性进行抗争。本文全面讲述了花卉在采收前后应注意的事项,以使切花的瓶插期更长。目前欧洲一些超市向顾客保证,花卉的瓶插寿命为7~10天,如果没有达到这一目标,超市将退款给顾客。但超市为此承担的损失将加之于法提供花卉瓶插期保障的供货商身上。 相似文献
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为研究保鲜剂1-甲基环丙烯(1-Methylcyclopropene, 1-MCP)对香石竹“Sangria”切花贮藏期、瓶插寿命及瓶插期生理代谢的影响,分别采用0.64、1.28、1.92μL/L 1-MCP对香石竹“Sangria”切花进行熏蒸处理,对冷藏(2～4℃)和室温(25℃)瓶插过程中切花状态进行调查。结果表明:室温条件下,1-MCP能够显著延长香石竹切花的瓶插寿命,其中浓度为1.92μL/L时效果最佳,香石竹切花瓶插寿命由4 d延长至8 d;冷藏条件下,1.92μL/L 1-MCP处理的切花开放指数达到0.8的时间为101 d,而对照组仅为18 d,大大延长了香石竹切花的冷藏时间。进一步调查冷藏后香石竹切花瓶插时发现:所有经1-MCP处理且冷藏110 d的香石竹切花可在瓶插1 d后正常开放;1.92μL/L 1-MCP处理可显著增加切花的相对吸水率,减缓花瓣电导率上升;瓶插第11天的1.92μL/L 1-MCP处理组花朵萎蔫率仅为7.1%,而对照组花朵萎蔫率达到78.5%。因此,1.92μL/L 1-MCP熏蒸处理可作为香石竹切花保鲜处理方案进行推广。 相似文献
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瓶插液对储藏后牡丹“洛阳红”切花瓶插品质的影响 总被引：3，自引：0，他引：3
dongleah@yahoo.com.cn 《中国农学通报》2006,22(3):267-267
以经过储藏12d、24d、36d的牡丹品种“洛阳红”为试材,通过测定切花瓶插期间的瓶插寿命、花径变化、鲜重变化率、水分平衡值和乙烯释放率等指标,研究了瓶插液(3%蔗糖 0.2g/LHQS 2mmolSTS)对“洛阳红”切花瓶插品质的影响。结果表明:瓶插液(3%蔗糖 0.2g/LHQS 2mmolSTS)可以显著延长“洛阳红”切花的瓶插寿命、提高其水分平衡值和花径、降低其鲜重损失和乙烯释放,提高‘洛阳红’切花的瓶插观赏品质。 相似文献
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以切花月季"戴安娜"为试验花材,以蔗糖、大蒜水提液和VC为原料,按照L9(34)正交设计配制瓶插液,通过测定瓶插寿命、花径变化率、鲜质量损失率和水分平衡值,研究不同瓶插液的保鲜效果.结果表明:在瓶插寿命指标上,20 g/L蔗糖+大蒜水提液(水提料液比1∶20(g/mL))+100 mg/L VC的配方组合表现最佳.极差分析表明,蔗糖是影响月季切花瓶插寿命的最主要因素,大蒜水提液次之.在鲜质量损失率指标上,10 g/L蔗糖+大蒜水提液(水提料液比1∶40(g/mL))+200 mg/L VC的配方组合表现最优.所有处理对月季切花的花径变化率和水分平衡值无显著影响. 相似文献
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为明确适宜于香石竹切花保鲜的苯甲酸钠浓度，采用在基础瓶插液中分别添加150、200、250、300 mg/L苯甲酸钠的保鲜液对香石竹切花进行瓶插处理，每2 d取样测定切花形态指标与生理生化指标。结果表明：添加不同浓度苯甲酸钠的保鲜瓶插液均能延长香石竹切花的寿命，改善切花水分状况，提高切花品质；与对照相比，苯甲酸钠质量浓度为150 mg/L和200 mg/L的瓶插液对香石竹切花保鲜效果差异均不显著，而苯甲酸钠质量浓度为250 mg/L和300 mg/L的瓶插液对香石竹切花保鲜效果差异均显著（P<0.05）。综合比较，苯甲酸钠质量浓度对香石竹切花保鲜效果排序为250 mg/L>300 mg/L>200 mg/L>150 mg/L。本研究结果可为延长香石竹切花瓶插寿命及保鲜剂研究提供理论依据。 相似文献
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《分子植物育种》2016,(5)
为延长非洲菊(Gerbera jamesonii Bolus)切花的保鲜时间,利用白糖、白醋和洗洁精混合制成家用保鲜液。通过测定瓶插寿命、花径、观赏值、可溶性蛋白含量、丙二醛(MDA)含量,研究不同浓度配比的家用保鲜液对切花品质和寿命的影响。结果表明:非洲菊切花瓶插期间,处理9(30 g/L白糖+20 g/L白醋+1.2 m L洗洁精)切花的瓶插寿命为12.3 d,比对照延长3.8 d;最大花径达到9.38 cm,比对照增大1.03 cm;可溶性蛋白含量最高,丙二醛(MDA)含量增长速率最慢,可作为非洲菊切花的理想家用保鲜液。通过采用正交表L9(34)设计,极差分析表明,保鲜液组成中白糖水平的变化对可溶性蛋白含量的变化影响最大,而洗洁精则对MDA含量的影响最大。研究结果可为非洲菊及其它鲜切花家用保鲜液体系的建立提供理论依据。 相似文献
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非洲菊切花采后生理及保鲜 总被引：5，自引：0，他引：5
非洲菊花朵硕大,花色丰富鲜艳,花枝挺拔,是世界著名切花品种之一,但它离体后瓶插期间易发生花头下垂、花茎弯折、萎蔫等现象,直接影响了鲜切花的寿命,降低了观赏价值。离体后衰老机理非洲菊离体后的生理变化切花是 相似文献
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为探究新型纳米级无机杀菌剂纳米铜(nano-copper,NC)处理对切花的保鲜效应,以非洲菊(Gerbera jamesonii)‘红艳’切花为试材,观测不同浓度NC单独处理及其与蔗糖组合溶液瓶插处理对非洲菊瓶插寿命、观赏品质和水分关系的影响。结果表明,与去离子水处理（对照组）相比,1、3、5 mg/L NC单独处理对非洲菊切花没有明显的保鲜作用,而各浓度NC加3%蔗糖的组合处理均可有效延缓和减轻该切花的花朵萎蔫和花茎弯折等品质劣变症状。其中,以1、3 mg/L NC+3%蔗糖的组合处理效果最为突出,可显著延长该切花的瓶插寿命,并使花枝瓶插期间的鲜重、水分吸收量和水分平衡值均显著高于对照和NC单独处理。试验表明适宜浓度的NC加蔗糖组合溶液瓶插处理对非洲菊‘红艳’切花具有良好的保鲜作用。 相似文献
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为提高瓶插非洲菊切花的品质,延长瓶插寿命,研究了不同配方保鲜液处理的非洲菊切花的水分平衡、鲜重变化、鲜重变化率和瓶插寿命各指标的变化规律及其关系。结果表明,处理2(蒸馏水+30 g/L蔗糖+200 mg/L 8-HQ+150 mg/L CA+75 mg/L KH2PO4)、处理3(蒸馏水+30 g/L蔗糖+200 mg/L8-HQ+150 mg/L CA+50 mg/L NaHPO4.2H2O)的保鲜剂配方保鲜效果为好,尤以处理2配方的保鲜效果最佳,瓶插寿命是对照(蒸馏水处理)的2.4倍,达到12 d以上。处理2、3非洲菊切花的瓶插寿命与水分平衡值、鲜重变化率分别呈线性和多项式回归关系,二者的水分平衡值与瓶插寿命的相关系数分别为R=0.984 5和R=0.989 5,鲜重变化率与瓶插寿命的相关系数分别为R=0.994 3和R=0.995 5;处理2、3分别在4.351、4.247 d时的水分平衡值为0,在6.633、6.526 d时切花花枝占最初的质量百分数为100%,这些参数为非洲菊切花的瓶插保鲜提供了重要的理论依据。 相似文献
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Dimitrios FanourakisSusana M.P. Carvalho Domingos P.F. Almeida Olaf van KootenWouter G. van Doorn Ep Heuvelink 《Postharvest Biology and Technology》2012,64(1):64-73
A constant high relative air humidity (RH) during cultivation can strongly reduce the vase life in some cut rose cultivars. We studied three contrasting cultivars in their tolerance to high RH in order to analyse in detail the water relations during postharvest and better understand this genotypic variation. Plants were grown at moderate (60%) and high (95%) RH, and cut flowers were placed in water immediately after cutting. Flowers of cv. Pink Prophyta grown at high RH did not open throughout vase life, while flower opening of cvs. Frisco and Dream was not affected by preharvest RH. Cultivation at high RH resulted in about 80% shorter vase life in Pink Prophyta, whereas in Dream and Frisco the negative effect was considerably smaller (15 and 9% shorter vase life, respectively). The shorter vase life and reduced flower opening of cut roses grown at high RH was due to a higher rate of transpiration both in the light and dark periods. It was found that the leaves of Pink Prophyta grown at high RH could partly close their stomata upon lowering of the water potential or when flower stalks were fed with abscisic acid, but stomata remained far more open than in leaves grown at moderate RH. The RH during cultivation did not affect stem hydraulic conductivity and its recovery after air emboli induction. Preventing vascular occlusion largely alleviated the high-cultivation-RH effect on vase life and flower opening, showing that the effect of high-cultivation-RH becomes only important if water uptake is limited. 相似文献
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Nano-silver pulse treatments inhibit stem-end bacteria on cut gerbera cv. Ruikou flowers 总被引：2，自引：0，他引：2
Jiping Liu Shenggen He Zhaoqi Zhang Jinping Cao Peitao Lv Sudan He Guiping Cheng Daryl C. Joyce 《Postharvest Biology and Technology》2009,54(1):59-62
Nanometer-sized silver (Ag+) particles (NS) are used in various applications as an anti-microbial. Effects of NS (2–5 nm diam.) pulse solution treatments on vase life of cut gerbera (Gerbera jamesonii) cv. Ruikou flowers were investigated. Compared with the control [pulsed with deionised water (DI) and subsequently held in DI] pulsing for 24 h with 5 mg/L NS solution followed by holding in DI maintained water uptake and extended vase life. From in vitro and microscopy assessments, NS pulse treatment inhibited bacteria growth in the vase solution and at cut stem ends during the first 2 d of the vase period. 相似文献
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Saowalak Banthoengsuk Saichol Ketsa Wouter G. van Doorn 《Postharvest Biology and Technology》2011,59(3):253-257
Fern leaves, also called fronds, are often used in bouquets. Leaves of the sword fern (Nephrolepis cordifolia) consist of a central vascular tissue, with numerous leaflets (pinnae) at each side. Leaves that have been cut and immediately placed in water show abscission of the pinnae, starting from about day 4 of vase life, with 50% pinnae abscission on day 13. The onset of pinnae abscission was hastened by a period of dehydration (3, 6, 9 or 12 h at 25 °C). The time to 50% pinnae abscission was between 7.0 and 4.7 days after 3 h and 12 h of dehydration, respectively. Dehydration treatments might induce air emboli in the xylem, but in these experiments did not inhibit water uptake. Dehydration did increase the rate of ethylene production of the cut leaves throughout vase life. A 3 h treatment with 1-MCP at concentrations of 200 or 300 nL L?1 prior to the period of dehydration reduced the rate of ethylene production and reduced the rate of abscission. 1-MCP treatments were also effective if given after the period of dehydration. The data show that pinnae abscission limits the vase life of cut leaves of the sword fern, and that a short period of water stress drastically increases the rate of abscission. The increase in pinnae abscission was correlated with an increase in ethylene production. As 1-MCP alleviated the effect of dehydration on pinnae abscission, the dehydration effect involved ethylene perception. The data suggest that a small water stress induced an autocatalytic rise in ethylene production which was the direct cause of the increase in pinnae abscission. 相似文献
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With the aim of extending vase life of cut dahlia flowers, we investigated the postharvest characteristics of the flowers. Our focus was on the role of ethylene on senescence and on treatments that have extended vase life of other flowers. Continuous exposure to ethylene at 2 or 10 μL L−1 significantly accelerated petal abscission in cut flowers. Flowers continuously immersed in 1 or 10 μL L−1 2-chloroethylphosphonic acid (CEPA) solution wilted earlier than those treated with distilled water (DW) or 0.15 g L−1 citric acid. Ethylene production from the ovary and ray petal was relatively high (4.5 and 0.9 nL g−1 fresh weight h−1, respectively) at harvest, but decreased gradually over 5 days. No remarkable increase in ethylene production was observed during senescence. Silver thiosulfate complex (STS), an inhibitor of ethylene action, did not extend the vase life of cut flowers, although a high silver concentration was detected in flower organs. In contrast, pulse treatment with 1-methylcyclopropene (1-MCP) and dip treatment with 6-benzylaminopurine (BA) extended the vase life of florets, and BA was more effective than 1-MCP when the flowers were held in both DW and CEPA. BA spray treatment extended vase life of cut ‘Kokucho,’ ‘Kamakura’ and ‘Michan’ flowers. These results suggest that dahlia flower senescence is partially regulated by ethylene, and BA is more effective in delaying the senescence of cut dahlia flowers than ethylene action inhibitors. 相似文献
