The pre-harvest foliar application influenced the flower quality and vase life of chrysanthemum cultivars

Abstract Celosia argentea var. cristata is an edible plant mainly cultivated as an ornament for its spectacular flowering and is highly appreciated by horticulturists for its originality, unique appearance of flower and better vase life. Utilisation of plant growth regulator [salicylic acid (SA)] and mineral nutrition [zinc (Zn)] is a sustainable approach to ameliorate crop health and yield. A field experiment was performed on a randomised complete block design with 12 treatments in 36 blocks to investigate the effectiveness of the combined application of SA (50 ppm and 100 ppm) and Zn (ZnSO4: 0.5 ppm, 1.5 ppm and 2.5 ppm) as well as when each one is applied separately on vegetative, reproductive, physiochemical attributes in C. argentea var. cristata. Results analysed through Tukey's honestly significant difference (HSD) test, biplot and heat map indicated a significantly greater improvement up to 2.5 folds in the growth attributes when plants received foliar application of 100 ppm of SA combined with 2.5 ppm of Zn as compared to control group. All treatments modified the physiobiochemical responses of plants by lowering catalase (CAT) activity significantly, and enhancing photosynthetic pigments, total protein content and peroxidase (POX) and polyphenol oxidase (PPO) activities as compared to the control group. It was concluded that foliar application of SA (100 ppm) + Zn (2.5 ppm) at pre-flowering stage could be applied to obtain better growth and flower quality in cockscomb.

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Postharvest quality of essential oil treated roses

Ornamental Horticulture ◽

10.14295/oh.v23i2.993 ◽

2017 ◽

Vol 23 (2) ◽

pp. 192 ◽

Cited By ~ 1

Author(s):

Guilherme Mariano Manfredini ◽

Patrícia Duarte de Oliveira Paiva ◽

Elka Fabiana Aparecida Almeida ◽

Ângela Maria Pereira Do Nascimento ◽

Thaís Silva Sales ◽

...

Keyword(s):

Essential Oil ◽

Essential Oils ◽

Cold Storage ◽

Production Costs ◽

Postharvest Quality ◽

Vase Life ◽

Pot Life ◽

Low Toxicity ◽

Flower Quality ◽

Cold Chamber

The loss of commercial quality during storage and transportation of roses is one of the factors that reflect on production costs, leading producers to preventively apply harmful chemicals, mainly to hamper Botrytis cinerea development and reduce further losses. An alternative to increase flower longevity without contaminating the environment with harmful chemicals is the use of natural products, such as essential oils, which have fungistatic and insecticide properties, as well as low toxicity. The objective of this study was to evaluate the effect of essential oils on the vase life of Rosa cv. Avalanche: 12 treatments were tested, resulting from the combination of 5 types of essential oils plus the control in two cold storage periods (2 to 6 days) at 1 °C, 90-95% RH. The essential oils tested were eucalyptus, cinnamon, lemongrass and peppermint (1%), clove (0.1%), plus a control with distilled water. Application was made by spraying the flower buds. After storage at low temperatures, the flower stems were kept in a room (16 °C, 70% RH) during 10 days for evaluation. Flower stems stored for 2 days in a cold chamber showed better means for darkening, turgor and bent neck, as well as a lower weight loss by the stems. The application of lemongrass essential oil at 1% caused burns on the petals, compromising quality and pot life. The essential oils of peppermint and eucalyptus allowed flower quality maintenance until the 10th day of evaluation. It is possible to conclude that post-harvest spraying with peppermint or eucalyptus essential oil at 1%, combined with cold storage for 2 days, provided greater longevity and quality for cv. Avalanche roses.

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Flower quality parameters and vase life studies of standard chrysanthemum cultivars (Dendrathema grandifloraTzvelev) in polyhouse conditions

AGRICULTURE UPDATE ◽

10.15740/has/au/12.techsear(3)2017/692-696 ◽

2017 ◽

Vol 12 (Special-3) ◽

pp. 692-696

Author(s):

ASMA SIDDIQUA ◽

K. SWARAJYA LAKSHMI ◽

R. NAGARAJU ◽

D. SRINIVASA REDDY ◽

S. SHAHEDA

Keyword(s):

Quality Parameters ◽

Vase Life ◽

Flower Quality

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Study on the vase life of Chyrsanthemum indicum cultivar Sakura cutting flower

Science and Technology Development Journal - Natural Sciences ◽

10.32508/stdjns.v4i1.829 ◽

2020 ◽

Vol 4 (1) ◽

pp. First

Author(s):

Thắng Thanh Trần ◽

Triều Phương Hoàng ◽

Hương Thanh Trần

Keyword(s):

Salicylic Acid ◽

Abscisic Acid ◽

Plant Growth ◽

Total Sugar ◽

Vase Life ◽

Cut Flowers ◽

Chrysanthemum Indicum ◽

Flower Quality ◽

Two Stages ◽

Physiological And Biochemical

Chrysanthemum indicum cultivar Sakura is one of the daisy cultivars. It is beautiful, but the vase life of cutting flowers is very short. The decrease in flower quality during storage and transportation is a big problem in the flower export. In this study, the morphological, physiological, and biochemical changes during the vase life of cutting flowers were analyzed. The effects of plant growth regulators and sucrose at different concentrations on the vase life of cut flowers were investigated. The vase life of Sakura cutting flowers includes two stages: (1) the growing and blooming of flower, (2) senescence of cutting flowers. During the growing and blooming, the color of disk flowers changed from green to yellow, and the ray flowers continued to expand the dimension leading to an increase in the diameter of the head flower. The senescence of cutting flowers was initiated by the reduction of chlorophyll content in the leaf, which was located at the base. Then, the ray flowers were discolored. In the senescence stage, the respiration rate and the content of the abscisic acid of head flower increased continuously. In contrast, the water absorption, the content of starch, total sugar, salicylic acid, auxin, cytokinin, and gibberellin decreased strongly. The treatment of 10 g/L sucrose, 2 mg/L NAA, 5 mg/L BA, and 20 mg/L salicylic acid in 24 hours extended the vase life of Sakura cutting flowers and the diameter of the head flower.

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