scholarly journals Study on the flower growth and opening to extend the vase life of the cut lotus flower (Nelumbo nucifera Gaertn.)

2016 ◽  
Vol 19 (4) ◽  
pp. 24-34
Author(s):  
Thuan Thi Ngoc Nguyen ◽  
Viet Trang Bui
Keyword(s):  
Dry Weight ◽  
Total Sugar ◽  
Tween 20 ◽  
Vase Life ◽  
Distilled Water ◽  
Physiological Changes ◽  
Fresh Weight ◽  
Lotus Flower ◽  
Flower Growth ◽  
Flower Stage

Morphological and physiological changes were investigated during flower growth and opening to extend the vase life of cut lotus flowers. When holding the flowers in distilled water, the edge of petals and the top edge of petals became black, and the stems were bent after 17 hours. Flowers fully opened and senesced after 25 hours. At full opening flower stage, there were decreases in fresh weight, and content of starch, auxin and zeatin, and increases in dry weight, and content of total sugar, anthocyanins and flavonols, ABA and gibberellin. Petal extract showed the presence two absorption peaks at 354 nm ( due to flavonols) and 535 nm (due to anthocyanins). Among the treatments, the combination of wilted flower (5 % fresh weight) and spraying of 2 mg/L NAA and 10 % coconut water (with 0,1 % Tween 20) gave a 2 days (43,22 hours) longer for cut lotus flowers than the control.

scholarly journals Study to extend the vase life of cut rose (Rosa hybrida L.) flowers

2016 ◽  
Vol 19 (2) ◽  
pp. 48-57
Author(s):  
Hong Thi Hoa Tran ◽  
Viet Trang Bui
Keyword(s):  
Water Uptake ◽  
Dry Weight ◽  
Flower Senescence ◽  
Vase Life ◽  
Ionic Conductance ◽  
Distilled Water ◽  
Fresh Weight ◽  
Rate Of Photosynthesis ◽  
Two Peaks ◽  
Cut Rose

This study investigated anatomic and physiologic changes during senescence to improve the vase life of cut rose flowers. When holding the flowers in the distilled water, the fresh weight increased in the 2nd day, and decreased in the following days. In progressing flower senescence, there were decreases in water uptake, dry weight, rate of photosynthesis, and concentration of auxin, gibberellin and zeatin, while the ionic conductance, and ABA concentration increased. The rate of respiration increased until the 3rd day, and then decreased. The UV absorption curve of the petal extract showed two peaks at 446 and 665 nm. The absorbances was the highest in the 1st day then decreased in the following days. Among the treatments, the combination of 10 mg/L BA, 1 mg/L GA3 and 0.1 mg/L NAA, and the combination of 10 mg/L BA and 0.1 mg/L NAA gave a vase life for cut roses 2 days longer than that of the control.

scholarly journals Positive Interaction Of Ethanol With Malic Acid In Postharvest Physiology Of Cut Spray Carnation ‘White Natila’

2014 ◽  
Vol 22 (2) ◽  
pp. 19-30 ◽  
Author(s):  
Fatemeh Begri ◽  
Ebrahim Hadavi ◽  
Amrollah Nabigol
Keyword(s):  
Weight Loss ◽  
Succinic Acid ◽  
Malic Acid ◽  
Dry Weight ◽  
Vase Life ◽  
Cut Flowers ◽  
Fresh Weight ◽  
Positive Interaction ◽  
Cell Membrane Stability ◽  
Preservative Solutions

AbstractIn this study, succinic acid (0, 1 and 2 mM), malic acid (0, 1 and 2 mM), ethanol (0, 2 and 4% v/v), and their mixtures were applied as preservative solutions for cut flowers of spread carnation cv. ‘White Natila’ and their effect on the longevity, the amount of absorbed solution, malondialdehyde and chlorophyll content, cell membrane stability, fresh, and dry weight and on a visual quality was determined. A similarity in the effect of malic acid and succinic acid on dry weight and fresh weight loss were found. Ethanol positively affected most of the studied traits, including the vase life and fresh weight loss. The preservative solution containing 1 mM of malic acid and 4% ethanol resulted in the longest average vase life - 11.1 days compared to 8.9 days in the control. Malic acid showed a significant positive synergism with ethanol that makes it reasonable to combine them in preservative solutions intended to extend the vase life of cut spray carnation.

scholarly journals EFFECT OF GROWTH REGULATORS AND PRESERVATIVE SOLUTION ON VASE LIFE AND WATER RELATION OF Gladiolus hybrida L. AFTER CUT FLOWERS

2019 ◽  
Vol 50 (Special) ◽  
Author(s):  
Al-Hasnawi & et al.
Keyword(s):  
Salicylic Acid ◽  
Water Balance ◽  
Dry Weight ◽  
Water Relation ◽  
Carbohydrate Content ◽  
Vase Life ◽  
Cut Flowers ◽  
Fresh Weight ◽  
Total Carotenoids ◽  
Preservative Solutions

This experiment was conducted to study the effect of five concentrations of growth regulator of (0, 25 GA3, 50 GA3, 100 Salicylic acid, 150 Salicylic acid) mg.L-1 and three types of preservative solutions on the vase life and water relations for Gladiolus hybrida L. after cut flower. The experiment was conducted as a factorial experiment (3×5) according to Randomized Complete Blocks Design, with three replicates. The results showed that GA3 (50 mg.L-1) significantly excelled in relative fresh weight of 155.33%, absorbed water 59.00 g /flower /day, the lost water 32.99 g /flower /day, water balance 26.01 g /flower /day, vase life 16.96 days, dry weight of flowers 22.89 g, and carbohydrate content in petals 22.34 %, and total carotenoids content in petals 7.84 mg/100 g dry weight. The second solution (5% sucrose + 200 mg.L-1 8.HQS + 200 mg.L-1citric acid) is significantly excelled in most studied traits. The interaction treatment that consisted of (50 mg.L-1 + second solution) is significantly excelled in traits of the relative fresh weight 168.47%, absorbed water 66.32 g/flower /day, the lost water 23.39 g/flower /day, water balance 42.93 g/flower /day, vase life 21.25 days, dry weight of flower 26.11 g, carbohydrate content in petals 20.78% and total carotenoids content in petals 10.06 mg/100g dry weight.

Influence of 8-hydroxyquinoline sulphate and sucrose treatments on the post-harvest quality of cut flowers of Strelitzia reginae and Hippeastrum vittatum

2009 ◽  
Vol 57 (2) ◽  
pp. 165-174
Author(s):  
F. Hassan
Keyword(s):  
Vase Life ◽  
Distilled Water ◽  
Cut Flower ◽  
Cut Flowers ◽  
Fresh Weight ◽  
Initial Weight ◽  
Post Harvest ◽  
Strelitzia Reginae ◽  
And Control

This investigation was carried out to study the effect of 100, 200 and 300 ppm 8-hydroxyquinoline sulphate (8-HQS) and 5 and 10% sucrose treatments on the vase life and post-harvest quality of cut flowers of Strelitzia reginae Ait. and Hippeastrum vittatum Herb. cv. Apple Blossome. All possible combinations of 8-HQS and sucrose were tested. The treatments were applied as holding solutions, and control flowers were held in distilled water till the end of the experiment. All the treatments significantly increased the vase life and number of open florets of Strelitzia reginae cut flowers compared to the control. Applying 8-HQS and sucrose treatments in both seasons improved the vase life and floret longevity of Hippeastrum vittatum cut flowers. In addition, the percentage of fresh weight gain from the initial weight and the carbohydrate content were also enhanced in both cut flower crops. In order to obtain the highest post-harvest quality of Strelitzia reginae Ait. and Hippeastrum vittatum Herb. cv. Apple Blossome cut flowers, treatment with 200 ppm 8-HQS + 10% sucrose was recommended.

Azospirillum inoculation in pregerminating wheat seeds

1996 ◽  
Vol 42 (1) ◽  
pp. 83-86 ◽  
Author(s):  
Cecilia M. Creus ◽  
Rolando J. Sueldo ◽  
Carlos A. Barassi
Keyword(s):  
Triticum Aestivum ◽  
Azospirillum Brasilense ◽  
Dry Weight ◽  
The Other ◽  
Distilled Water ◽  
Fresh Weight ◽  
Bacterial Concentration ◽  
Wheat Seedlings ◽  
Viable Cells ◽  
Wheat Seeds

Azospirillum cells were inoculated in pregerminating wheat during seed imbibition. Surface-sterilized seeds of Triticum aestivum cv. Buck Pucará were sequentially soaked for 3 h in water and 3 h in the inoculum of 3 × 108Azospirillum brasilense Sp 245 cells∙mL−1, to allow bacteria to enter during imbibition. Germination and seedling growth were accomplished in sterile distilled water at 20 °C, in the dark. To compare with more traditional methods based on plant–Azospirillum colonization after germination, seedlings from noninoculated seeds were inoculated in parallel by immersing roots in the same inoculum, for the same period of time. Autoclaved inocula were used as controls in all cases. We observed about 5 × 108Azospirillum cells∙g−1 fresh weight in 11-day-old wheat seedlings inoculated before or after seed germination. However, roots from seed-inoculated seedlings had higher both bacterial concentration and length. On the other hand, seeds inoculated during imbibition and dried to 14% water content retained 3.7 × 106 viable cells∙g−1 dry weight up to 27 days. Moreover, seeds stored for 30 days were not only able to germinate but also to harbor over 106 cells∙g−1 fresh weight in roots after 7 days growth. Here we present the possibility of obtaining in a simple and inexpensive way, seeds containing high numbers of viable Azospirillum cells, which could avoid the use of external carriers or adhesives.Key words: Azospirillum, wheat, inoculation.

Changes in the cotyledons of Cucurbita maxima during germination. I. General characteristics

1970 ◽  
Vol 48 (12) ◽  
pp. 2227-2231 ◽  
Author(s):  
John N. A. Lott
Keyword(s):  
Cell Division ◽  
Dry Weight ◽  
Physiological Changes ◽  
Cucurbita Maxima ◽  
Light Conditions ◽  
Weight Changes ◽  
Fresh Weight ◽  
Germination Time ◽  
Storage Organs

Various structural and physiological changes in squash cotyledons were followed as a function of germination time. Temperature, to which squash plants are very sensitive, was kept constant at 31 °C but light conditions were varied.In light-germinated plants (16 h light/day) the cotyledons changed from storage organs to greatly enlarged photosynthetic leaves, within 5 days. Incorporation of major amounts of thymidine-2-14C throughout the cotyledons occurred only during the enlargement phase.Dark-germinated plants, in which the cotyledons enlarged very little, produced a long, stout hypocotyl. No major incorporation of thymidine-2-14C into the cotyledons occurred, suggesting that little cell division occurs in the cotyledons of dark-germinated squash plants.Fresh- and dry-weight changes in the cotyledons were consistent with the changes in morphology of light- and dark-germinated plants. The cotyledons of plants which were dark-germinated for 6 days and then placed in 16 h light per day did not reach the fresh weight per cotyledon or dry weight per cotyledon level attained by cotyledons from plants germinated, from the beginning in 16 h light per day.

scholarly journals Evaluation of allelopathic effect of Carthamus Oxyacantha against wheat and maize seed germination

2020 ◽  
Vol 9 (1) ◽  
pp. 814-818
Keyword(s):  
Seed Germination ◽  
Dry Weight ◽  
Germination Percentage ◽  
Allelopathic Effect ◽  
Distilled Water ◽  
Maize Seed ◽  
Fresh Weight ◽  
Vigor Index ◽  
Seedling Length ◽  
Powder Extract

Effect of Carthamusoxyacantha powder aqueous extract on seed germination of Wheat and Maize were studied. Powder extract of 3g, 6g and 9g of concentration were soaked in distilled water for 12 Hrs, 24 Hrs and 36 Hrs of time. The seeds of Wheat and Maize were germinated in Petri dishes. Control was maintained by watering the seeds with distilled water. The highest values for germination percentage, shoot length, root length, fresh weight, dry weight, seedling length, vigor index and seedling weight vigor index were recorded in control of wheat the above parameter decreased with increasing concentration and timing. While in maize highest values for the above parameters were recorded in treatments as compared to control.

scholarly journals RESPONSE OF `ALASKA' PEA SEEDLINGS TO FREEZING AND CHILLING STRESSES AFTER EXOGENOUS APPLICATION OF ABSCISIC ACID.

HortScience ◽  
1991 ◽  
Vol 26 (6) ◽  
pp. 737B-737
Author(s):  
Milton E. Tignor ◽  
Russell L. Weiser
Keyword(s):  
Amino Acids ◽  
Cell Wall ◽  
Abscisic Acid ◽  
Chilling Stress ◽  
Dry Weight ◽  
Visual Observation ◽  
Distilled Water ◽  
Fresh Weight ◽  
Pea Seedlings ◽  
Blank Solution

Alaska peas (Pisum sativum `Alaska') germinated in a dark growth chamber were treated ABA dissolved in a small amount of acetone before diluting in distilled water with 0.1% spreader. A blank solution was identically prepared without ABA. Both solutions were applied via paintbrush to the epicotyls of the peas every twelve hours for seven days following emergence. The blank solution was applied to two controls, chronological and physiological. A methanol bath was used to induce freezing and chilling stresses. ABA significantly improved cold tolerance (electrolyte leakage) in the pea seedlings for both freezing and chilling stress as compared to the physiological and chronological controls. Visual observation of the pea stems suggested a difference in stem flexibility among ABA treated peas and the controls. Pea stem elasticity and plasticity were measured along with plant dry weight, cell wall weight/gram fresh weight, and the quantity of cell wall sugars and amino acids.

scholarly journals Optimal planting density for cut Lilium and tuberose production

2019 ◽  
Vol 25 (2) ◽  
pp. 144-148
Author(s):  
Iftikhar Ahmad ◽  
Waqas Hassain Naeem ◽  
Bilal Abdullah
Keyword(s):  
Leaf Area ◽  
Dry Weight ◽  
Spike Length ◽  
Planting Density ◽  
Vase Life ◽  
Market Demand ◽  
Plant Spacing ◽  
Fresh Weight

Lilium and tuberose are promising geophytic flowers, which have high market demand in global floral markets. A study was conducted to optimize planting densities for cut lilium and tuberose production. Bulbs of Asiatic lily ‘Brunello’ and tuberose ‘Single’ were planted on 7.5 cm, 15.0 cm and 22.5 cm between bulbs while ridge were spaced at 60 cm apart. Lilium bulbs planted at 22.5 cm took 185 d, while tuberose took 101 d to produce flowers as compared to 7.5 cm spacing (173 d and 93 d, respectively). Bulbs of lilium and tuberose planted at 22.5 cm resulted in tallest plants with highest leaf area for both tested species, 69.1 cm and 11.4 cm2 for lilium and 110.6 cm and 30.2 cm2 for tuberose, respectively. Both species had highest number of florets with longer stem/ spike length and stem/spike diameter when planted 22.5 cm apart, while close planting further decrease number of buds/florets and stem/spike length. Similar results were recorded for fresh weight of a stem, while vase life and dry weight of a stem were relatively less affected by plant spacing. However, lilium and tuberose bulbs when planted at 22.5 cm plant spacing produced higher number of best quality stems for market as compared to other planting densities.

scholarly journals Response of Celosia Argentea (Plumosa) to Spraying With Growth Regulars (ABA and GA3)

2021 ◽  
Vol 910 (1) ◽  
pp. 012018
Author(s):  
Kareema Abed I. Al-Fatlawi ◽  
Mateen Yilmaz I. Al-Bayati
Keyword(s):  
Abscisic Acid ◽  
Leaf Area ◽  
Plant Height ◽  
Dry Weight ◽  
Vase Life ◽  
College Of Agriculture ◽  
Celosia Argentea ◽  
Flower Growth ◽  
Flower Diameter

Abstract The experiment was carried out in lath house, College of Agriculture/University of Kirkuk for the agricultural on 15-3-2021. The concentrations of Abscisic acid (ABA) were (0, 10, 20, 40) mg.l-1, Gibberellin (GA3) were (0, 50, 100, 200) mg.l-1. Results showed that Spraying with a concentration of 40 mg.L-1 of ABA and a concentration of 100 mg.L-1 of GA3 gave a significant increase in most of the vegetative and flowering characteristics, as it was superior in plant height, number of plant branches, leaf area, chlorophyll percentage, wet and dry weight. As for the characteristics of flower growth, it was significantly superior in number of flowers, flower diameter, vase life, number of flowering branches, wet and dry weight of flowers.

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