scholarly journals Effect of oxalic acid on vase life and antioxidative activities of ‘Mero Star’ cut lily flowers

2021 ◽  
pp. 56-61
Author(s):  
Hafiz Farooq Anwar ◽  
Hafiz Muhammad Shoaib Shah ◽  
Abdul Waheed ◽  
Mudassar Anwar Butt ◽  
Hafiz Zafar-ul-Qasim ◽  
...  
Keyword(s):  
Oxalic Acid ◽  
Electrolyte Leakage ◽  
Oxidative Enzymes ◽  
Postharvest Quality ◽  
Vase Life ◽  
Cut Flowers ◽  
Relative Water ◽  
Flower Diameter ◽  
Peroxidase Enzymes

Lily (Lilium L. hybrids) is sub-tropical cut flower that can be grown in open place or in green house and has consumer demand in local as well as in offshore markets. Short vase life, postharvest decay of flowering petals, activities of oxidative enzymes, malondialdehyde contents, electrolyte leakage and low water ratio are the main problems in marketing of cut lilies. This study was carried out to investigate the effect of oxalic acid (OA) treatments on vase life (12 days) and postharvest quality of ‘Mero Star’ cut lily flowers. The flowering stems were placed in 2, 4 and 6% aqueous solution of OA for 12 days at 20±2 °C with 70±5% relative humidity. Flowers placed in 6% OA solution exhibited longest vase life and flower diameter with higher relative water content and increased fresh weight and reduced flower decay. Reduced malondialdehyde contents and electrolyte leakage with higher activities of catalase, superoxide dismutase and peroxidase enzymes were also noted in 6% OA-treated flowers. In conclusion, exogenous postharvest application of 6% OA extended vase life and maintained postharvest quality of cut flowers by reducing electrolyte leakage and malondialdehyde contents with higher antioxidative enzymes activities.

scholarly journals Conservation of Alstroemeria cut flowers stored under refrigeration

2020 ◽  
Vol 43 ◽  
pp. e50016
Author(s):  
Vanessa Cury Galati ◽  
Ana Carolina Corrêa Muniz ◽  
João Emmauel Ribeiro Guimarães ◽  
Claudia Machado Fabrino Mattiuz ◽  
Ben Hur Mattiuz
Keyword(s):  
Storage Period ◽  
Postharvest Quality ◽  
Cut Flowers ◽  
Floral Longevity ◽  
Randomized Design ◽  
Significant Difference ◽  
Relative Water ◽  
Peroxidase Enzymes ◽  
Storage Temperatures

Alstroemeria flowers have shown great importance in the world trade of cut flowers due mainly to its beauty and wide variety of colors. However, the durability of its inflorescences is usually hampered by the rapid yellowing of the leaves, which impairs their decorative quality. Cut flowers require the use of technologies to improve postharvest quality and floral longevity. This research aimed to study the postharvest conservation of inflorescences of Alstroemeria cv. Ajax at different storage temperatures. Floral stems were placed in containers with distilled water and stored at four temperatures (4, 8, 12, and 22ºC) for 12 days. The following analyses were performed: fresh mass variation, respiratory activity, relative water content, soluble and reducing carbohydrate contents, polyphenol-oxidase and peroxidase enzymes, pigments (anthocyanin and carotenoids), and longevity. The experiment was conducted in a completely randomized design, the results were submitted to analysis of variance (ANOVA), and the effect of treatments submitted to F-test. Significant differences were compared using the least significant difference (LSD) at 95% confidence interval (p ≤ 0. 05). The temperatures of 8 and 12ºC were effective in maintaining the postharvest quality of inflorescences during storage period, as they remained turgid due to transpiration reduction caused by low temperatures, and longevity reaching 46 and 22 days, respectively.

scholarly journals Influence of Citric Acid and Hydrogen Peroxide on Postharvest Quality of Tuberose (Polianthes tuberosa L. ‘Pearl’) Cut Flowers

2016 ◽  
Vol 24 (1) ◽  
pp. 13-19 ◽  
Author(s):  
Abdolrahman Rahimian-Boogar ◽  
Hassan Salehi ◽  
Noshin Mir
Keyword(s):  
Hydrogen Peroxide ◽  
Citric Acid ◽  
Postharvest Quality ◽  
Control Treatment ◽  
Vase Life ◽  
Cut Flowers ◽  
Positive Effects ◽  
Relative Water ◽  
Solution Uptake

Abstract Quality of cut flowers is an important issue at postharvest as well as an important factor contributing to marketing of and profitability from the tuberose. In this study, the effects of citric acid (CA) and hydrogen peroxide (H2O2) added to the vase water on postharvest quality of tuberose cut flowers were investigated. CA was applied in concentrations of 50, 100, 200, 400 mg·dm−3 and H2O2 in concentrations of 10, 20, 40 and 80 mg·dm−3 and distilled water as control treatment. Results showed that both compounds had significant positive effects on solution uptake, wilting and abscission of florets, relative water content, chlorophyll content, and vase life duration. The effects of 100 and 200 mg·dm−3 of CA and 20 and 40 mg·dm−3 of H2O2 proved to be more effective than other treatments. Both compounds increased the vase life of tuberose cut flowers and CA at concentrations 100 and 200 mg dm−3 and H2O2 at concentrations 20 and 40 mg dm−3 doubled this time up to 14-17 days.

scholarly journals Postharvest quality of red gerberas depending on the storage temperature

2016 ◽  
Vol 46 (11) ◽  
pp. 1945-1951 ◽  
Author(s):  
Ana Carolina Corrêa Muniz ◽  
Vanessa Cury Galati ◽  
Kelly Magalhães Marques ◽  
Claudia Fabrino Machado Mattiuz ◽  
Ben-Hur Mattiuz
Keyword(s):  
Storage Temperature ◽  
Sugar Content ◽  
Soluble Sugar ◽  
Postharvest Quality ◽  
Vase Life ◽  
Randomized Design ◽  
Two Factors ◽  
Relative Water ◽  
Loss Of Mass

ABSTRACT: This study aimed to verify the best storage temperature in the postharvest quality conservation of inflorescences of gerberas cv. 'Intenza'. Inflorescences were kept in distilled water and stored at the temperatures of 22ºC (control); 12ºC; 8ºC and 4ºC. The experiment was conducted in a completely randomized design in split plot with two factors: 4 treatments (temperatures) X 4 evaluation dates (0, 3, 6 and 9 days). It was used three replicates, with three inflorescences each. It were evaluated the variation of fresh mass, relative water content, soluble and reducing sugars content and longevity. Results were submitted to analysis of variance and means compared by Tukey test at 5% of probability. The inflorescences of gerbera maintained at 4ºC, 8ºC and 12ºC showed a greater postharvest life compared with the inflorescences of the control, highlighting those kept at 4ºC which presented less loss of mass and higher soluble sugar content; thus, maintaining the quality of gerberas for a longer period, with vase life of approximately 15 days.

scholarly journals Postharvest responses of Carnation cut flowers to Prunus cerasoides mediated silver nanoparticles

2020 ◽  
Vol 23 (4) ◽  
pp. 1818-1827
Author(s):  
Tu Thi Anh Le
Keyword(s):  
Silver Nanoparticles ◽  
Leaf Extract ◽  
Vase Life ◽  
Cut Flowers ◽  
Sem Images ◽  
Preservative Solution ◽  
Prunus Cerasoides ◽  
Flower Diameter ◽  
Flower Quality

Introduction: The procedure to synthesize silver nanoparticles (SNPs) from Prunus cerasoides leaf extract and their effect on vase life and flower quality of cut carnation were investigated. Methods: SNPs were bio-synthesized from Prunus cerasoides leaf extract and characterized by using UV-Vis technique, TEM, and SEM images. The postharvest responses of carnation cut flowers to the biosynthesis SNPs were evaluated through vase life, relative fresh weight, vase solution uptake, flower diameter of cut carnation. Results: SNPs were synthesized under optimum conditions, including using the extract of leaf heating at 60 oC in 30 min, 4 mM of silver nitrate, pH of 11, and 180 min of reaction time. SNPs exhibited antimicrobial activity and then alleviated the bacterial development in the preservative solution. All treatments with SNPs had improved the vase life and quality of cut carnation compared to the control. A vase solution containing 2% sucrose enhanced the carnation cut flowers. Conclusions: The preservative solution containing 25 ppm SNPs and 2% sucrose showed the best effect. SNPs could be used as a promising antibacterial agent applied in the preservative solution for cut carnation flowers.

scholarly journals Postharvest quality of Aster ericoides after treatment with silver thiosulphate and sucrose

2018 ◽  
Vol 48 (12) ◽  
Author(s):  
Kathia Fernandes Lopes Pivetta ◽  
Claudia Fabrino Machado Mattiuz ◽  
Regina Ferreira de Melo ◽  
Renata Gimenes ◽  
Gustavo de Nobrega Romani ◽  
...  
Keyword(s):  
Polynomial Regression ◽  
Sucrose Solution ◽  
Fresh Mass ◽  
Postharvest Quality ◽  
Vase Life ◽  
Cut Flowers ◽  
Silver Thiosulphate ◽  
Randomized Design ◽  
Aster Ericoides ◽  
Relative Water

ABSTRACT: Aster (Aster ericoides L.) is a flower crop of North American origin, which belongs to the family Asteraceae. This plant presents capitulum-type inflorescences, widely used as cut flowers. In Brazil, it has been grown only recently, but still has a high expansion potential. In floriculture, pulsing and conditioning solutions are often used to extend the vase life of cut flowers. The present study aimed to evaluate the influence of silver thiosulphate (STS) pulsing and sucrose solutions on the postharvest life of A. ericoides stems. The experiment was carried out under a complete randomized design with treatments arranged in a 2x5 factorial scheme. Treatments consisted of flower stems treated with STS pulsing for 30 minutes, combined with four sucrose concentrations (5, 10, 15, and 20%) for six hours, plus a control (without treatment). Each plot contained four replicates of 10 stems, totalizing 400 stems. The following variables were daily: vase life, fresh mass, and relative water content (RWC). For pulsing data, means were compared by the Tukey’s test (p≥5%). Yet for sucrose concentrations, means were submitted to a polynomial regression to verify the behavior of variables as a function of concentrations increases. Likewise, each treatment was evaluated for fresh mass and RWC variations over time by a polynomial regression. Results indicated no effect of STS pulsing (2mM) on the vase-life length of aster stems. In contrast, the sucrose solution at 10% extended the vase life of stems by two days, decreased fresh mass loss, and helped maintain water balance in stems.

scholarly journals Using Arachis pintoi leaf extracts in biosynthesis of silver nanoparticles for improving the vase life of cut carnation (Dianthus caryophyllus L.)

2020 ◽  
Vol 17 (4) ◽  
pp. 673-688
Author(s):  
Tran Lap Xuan ◽  
Le Ba Le ◽  
Le Thi Anh Tu
Keyword(s):  
Silver Nanoparticles ◽  
Dianthus Caryophyllus ◽  
Postharvest Quality ◽  
Vase Life ◽  
Cut Flowers ◽  
Leaf Extracts ◽  
Solution Ph ◽  
Arachis Pintoi ◽  
Flower Diameter ◽  
Average Size

A biological method for synthesizing silver nanoparticles (SNPs) using the leaf extracts of Arachis pintoi Krapov. & W.C. Greg. was developed.  The optimum conditions of input materials were found with leaf autoclaving in 15 min, 20 g fresh leave, and 4 mM of silver nitrate (AgNO3). To study the role of time, temperature, and solution pH of the reaction, varying time reaction (5, 30, 60, 90, 120, 150, and 180 min), temperature reaction (10, 20, 30, 40, and 50oC) and pH of the solution (1, 3, 5, 7, 9, and 11) were investigated. The optimal biosynthesis conditions were achieved in 180 min of reaction time at 50oC and pH 11. The obtained nanoparticles have spherical and oblong in shape with average size of 26.4 nm. The SNPs in 4 concentrationss (5, 15, 25, and 35 ppm) combined with and without 2% sucrose extended vase life, enlarged flower diameter, and maintained increase the relative fresh weight with vase solution uptake rate. SNPs inhibited significantly the bacterial growth in the stem end and vase solution, reduced the blockage in stems and therefore promoted the postharvest quality of carnation cut flowers. Out of the treatments, administration of 5 ppm SNPs with 2% sucrose of vase solution gave the best results for all parameters. The biosynthesis SNPs could be applied as a promising preservative solution for carnation cut flowers.

scholarly journals 1-MCP and STS as ethylene inhibitors for prolonging the vase life of carnation and rose cut flowers

2004 ◽  
Vol 10 (4) ◽  
Author(s):  
F. Hassan ◽  
G. Schmidt ◽  
Y. M. Hafez ◽  
M. Pogány ◽  
J. Ankush
Keyword(s):  
Heavy Metal ◽  
Ethylene Production ◽  
Untreated Control ◽  
Postharvest Quality ◽  
Vase Life ◽  
Ethylene Inhibitors ◽  
Cut Flowers ◽  
Initial Weight ◽  
Silver Thiosulfate

The effect of STS and 1-MCP on the postharvest quality of carnation and rose cut flowers was studied. Cut flowers of Dianthus c..aryophyllus L. cv. Asso and Rosa hybritia cv. Baroness were treated with silver thiosulfate (STS) at 0.4 mM with sucrose at 50 g 1-t and 1-methylcyclopropene ( I -MCP) at 0.5 g m-3 for 611. Pretreatment with STS and 1-MCP significantly extended the vase life and minimized the % loss of initial weight of carnation and rose cut flowers comparing to the untreated control. The two chemicals applied inhibited the chlorophyll degradation and carbohydrate loss and hence, significantly improved the postharvest quality of carnation and rose cut flowers comparing to the control. Ethylene production by cut flowers was inhibited as a result of using these chemicals. In general, there were no differences between STS and (-MCP but the later does not have the heavy metal implications of STS treatment, and hence, using 1-MCP pretreatment for extending the vase life of carnation and rose cut flowers was recommended.

scholarly journals POSTHARVEST QUALITY OF ALSTROEMERIA CUT FLOWERS AFFECTED BY PREHARVEST SOIL AND AIR TEMPERATURE

HortScience ◽  
1992 ◽  
Vol 27 (6) ◽  
pp. 617c-617
Author(s):  
Rik van Gorsel ◽  
A. Verlind ◽  
A. van de Wiel ◽  
G. van Leeuwen
Keyword(s):  
Root Zone ◽  
Postharvest Quality ◽  
Vase Life ◽  
Cut Flowers ◽  
Greenhouse Soil ◽  
Flower Production ◽  
Air Temperatures ◽  
Number Of Stems ◽  
Pretreatment Solution

Low root zone temperatures in summer stimulate generative development of Alstroemeria, resulting in a higher flower production in winter. The effects of greenhouse soil and air temperatures on vase life and ornamental value were evaluated. Preharvest treatments were two locations (field stations), four air temperatures (9, 12, 15, 18C), four root zone temperatures (11, 14, 17C, uncontrolled) and three varieties ('Flamengo', 'Jubilee', 'Wilhelmina') in a factorial design. The flowers were placed in a commercial pretreatment solution for 24 hours immediately after harvest. After a two day transport simulation and rehydration for 3 hours at 5C, flowers were kept at 1.5 W.m-2 PAR (12hr/day), 20C and 60% RH. The experiment was done three times. Results from the first harvest showed that lowering the soil temperature increased the number of stems that had two whirls of flowers opening after harvest. Average vase life was two weeks. Low air temperatures increased whirl opening as well, and increased vase life by one or two days. Ornamental value and number of flower branches per stem were not affected.

scholarly journals Polyamines accentuate vase life by augmenting antioxidant system in cut spikes of Consolida ajacis (L.) Schur.

2021 ◽  
Vol 27 (4) ◽  
pp. 495-504
Author(s):  
Aehsan ul Haq ◽  
Sumira Farooq ◽  
Mohammad Lateef Lone ◽  
Shazia Parveen ◽  
Foziya Altaf ◽  
...  
Keyword(s):  
Reactive Oxygen Species ◽  
Postharvest Quality ◽  
Flower Senescence ◽  
Vase Life ◽  
Distilled Water ◽  
Oxygen Species ◽  
Cut Flowers ◽  
Postharvest Senescence

Abstract Postharvest senescence is one of the crucial challenges limiting the marketability of cut flowers. Pertinently, recent investigations implicate extensive role of polyamines in regulation of flower senescence. The present study was envisaged to test the efficacy of poylamines in preserving the postharvest quality of Consolida ajacis (C. ajacis) cut spikes. The cut spikes of C. ajacis were subjected to various treatments of polyamines viz, 4 mM Spermine (SPM), 6mM Putrescine (PUT) and 6 mM Spermidine (SPD). A separate set of spikes held in distilled water represented the control. Our results authenticate a significant improvement in vase life of cut spikes of C. ajacis as compared to control. The increment in vase life was commensurate with the higher concentration of sugars, proteins and phenols in the tepal tissues. Polyamines amplified the activity of various antioxidant enzymes viz, superoxide dismutase (SOD), catalase (CAT) and ascorbate peroxidase (APX) to overcome the deleterious effects of reactive oxygen species (ROS). The membrane outflow of tepal tissues was profoundly reduced due to attenuated lipoxygenase (LOX) activity. These findings reveal conspicuous role of polyamines particularly SPM in modulation of flower senescence in cut spikes of C. ajacis.

scholarly journals Postharvest Treatments Improve Quality of Cut Peony Flowers

Agronomy ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 1583
Author(s):  
Julita Rabiza-Świder ◽  
Ewa Skutnik ◽  
Agata Jędrzejuk ◽  
Aleksandra Łukaszewska
Keyword(s):  
Ornamental Plants ◽  
Vase Life ◽  
Flower Longevity ◽  
Cut Flowers ◽  
Carbohydrate Accumulation ◽  
Postharvest Treatments ◽  
Flower Diameter ◽  
Physiological And Biochemical ◽  
Tylose Formation

Peony is one of the most important ornamental plants in the international flower market, but has a relatively short vase life in water. This study tested the effects of 8-hydroxyquinoline citrate (8-HQC) and nanosilver (NS) in combination with sucrose, as well as two commercial preservatives, on the longevity and some physiological and biochemical aspects of senescence of cut flowers of 14 cultivars. Responses varied both by cultivar and treatment. The preservatives extended the vase life in only five cultivars; however, in nine cultivars, preservatives increased the flower diameter and improved the general flower appearance. Blockages in xylem vessels started to appear soon after harvest. Both NS and 8-HQC with sucrose prevented tylose formation, while bacterial blockages were reduced only by the NS solution. Reduction in stem blockages did not translate into better water balance or flower longevity. The highest carbohydrate accumulation in petals was observed in the NS solution. Preservatives mitigated the rise in free amino acids, including free proline. They did not prevent an increase in H2O2 content but flowers in preservatives generally had higher catalase activity than in the control. As solutions with NS produced comparable or even better results than 8-HQC, we recommend the latter as a component of a preservative for cut peony flowers. However, cultivar-specific responses indicate that postharvest treatments must be individually tailored to each cultivar.

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