Fertilization Rate Affects Production and Postharvest Quality of Tapeinochilus ananassae Flowers

Greenhouse-grown Tapeinochilus ananassae Hassk. were fertilized with 1110, 2220, or 4440 g of Osmocote 17N–3P–10K/m2 per year for 4 years. Plants receiving the medium rate of fertilizer produced the most flowers, while the highest fertilization rate resulted in the fewest. Flower stalk length decreased each year after planting, but cutting back the vegetative shoots to the ground resulted in increased flower stalk length the following year. Fertilization with the highest rate resulted in reduced flower postharvest life, but floral preservatives and ethylene inhibitors had no effect on postharvest life.

Download Full-text

Effect of pre harvest application of boron and zinc on post harvest quality and vaselife of carnation

Journal of Applied and Natural Science ◽

10.31018/jans.v8i1.778 ◽

2016 ◽

Vol 8 (1) ◽

pp. 232-235

Author(s):

Likhitha Raj ◽

Siddappa Siddappa ◽

S. Varalakshmi ◽

H. M. Vikas ◽

C. H. Girjakumari

Keyword(s):

Foliar Application ◽

Foliar Spray ◽

Poor Quality ◽

Vase Life ◽

Flower Stalk ◽

Post Harvest ◽

Flower Diameter ◽

Maximum Water ◽

Stalk Length

The study was conducted to determine the effect of pre harvest spray of micronutrients like boron, zinc and its combination on post harvest quality and vase life of carnation. Post harvest quality of flowers like flower stalk length (65.61 cm) was maximum in the plant treated with zinc (0.3 per cent), and calyx splitting (3.12 per cent) was minimum in the plants treated with boron (0.1 per cent). Flower diameter (6.64 cm) was highest with boron (0.1 per cent) + zinc (0.3 per cent) treatment. Plants without micronutrient treatment produced poor quality flowers. Regarding vase life studies maximum water uptake and minimum transpiration loss from first day to sixteenth day was resulted in the flowers which are obtained from the plant treated with boron (0.1 per cent). The maximum fresh weight of the flower was noticed in combination of boron (0.1 per cent) + zinc (0.3 per cent) from first to sixteenth day. The foliar spray of boron (0.1 per cent) recorded maximum vase life (11.05 days). So the good quality of flowers can be improved by the foliar spray of zinc, calyx splitting can be controlled by boron foliar spray and vase life of the flower can be maintained by foliar spray of boron. It is confirmed that the foliar application of micronutrient is very much helpful for the improvement of post harvest quality and vase life of carnation.

Download Full-text

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

International Journal of Horticultural Science ◽

10.31421/ijhs/10/4/529 ◽

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.

Download Full-text

Maturity at harvest and postharvest quality of summer squash

Pesquisa Agropecuária Brasileira ◽

10.1590/s1678-3921.pab2019.v54.00133 ◽

2019 ◽

Vol 54 ◽

Cited By ~ 1

Author(s):

Juan Facundo Massolo ◽

Juan Manuel Zarauza ◽

Joaquín Héctor Hasperué ◽

Luis María Rodoni ◽

Ariel Roberto Vicente

Keyword(s):

Phenolic Compounds ◽

Developmental Stages ◽

Sugar Content ◽

Chilling Injury ◽

Postharvest Quality ◽

Cucurbita Maxima ◽

Summer Squash ◽

Increasing Trend ◽

Postharvest Life

Abstract: The objective of this work was to evaluate the influence of harvest at maturity on the composition, quality, and postharvest life of zapallito squash (Cucurbita maxima var. zapallito). Fruit were harvested at three developmental stages - small, medium, and large, with 30, 70, and 90±10-mm diameter, respectively - and were stored at 0 and 5°C for 26 days and, then, at 20°C for 2 days. The following parameters were determined: respiration, firmness, color, chlorophyll content, carotenoids, sugars, acidity, phenolic compounds, antioxidants, decay, mass loss, and chilling injury (CI). Small light-colored squashes were more prone to dehydration and decay. Delaying harvest markedly reduced fruit carotenoid contents, acidity, and respiration rate; however, it did not affect firmness nor sugar content. Chlorophyll showed an increasing trend during fruit development. Small squashes had 100% higher levels of phenolic compounds and antioxidants than medium and large fruit, but were more sensitive to CI. No differences for CI susceptibility were observed between medium and large fruit. The quality of small, medium, and large squashes remained acceptable for 12, 19, and 26 days at 5ºC, respectively, plus 2 days at 20ºC.

Download Full-text

Postharvest Quality of Cut Roses Following Electron-beam Irradiation

HortScience ◽

10.21273/hortsci.32.4.698 ◽

1997 ◽

Vol 32 (4) ◽

pp. 698-701 ◽

Cited By ~ 8

Author(s):

Ai-Yu Chang ◽

Richard J. Gladon ◽

Mark L. Gleason ◽

Sharon K. Parker ◽

Nancy H. Agnew ◽

...

Keyword(s):

Electron Beam ◽

Electron Beam Irradiation ◽

Postharvest Quality ◽

Beam Irradiation ◽

Flower Bud ◽

Injury Threshold ◽

Postharvest Life ◽

Bud Opening ◽

Fourth Experiment

Cut Rosa ×hybrida L. `Royalty' flowers were used to determine the efficacy of electron-beam irradiation for increasing postharvest quality and decreasing petal infection by Botrytis cinerea Pers. In an experiment for determining the injury threshold, roses received electron-beam irradiation of 0, 0.5, 1, 2, and 4 kGy. Irradiation dosages ≥1 kGy caused necrosis on petal tissue and decreased postharvest life at 20 °C. In a second experiment to evaluate postharvest quality, roses were irradiated at 0, 0.25, 0.5, 0.75, and 1 kGy. Dosages of 0.25 and 0.5 kGy slowed the rate of flower bud opening for 2 days but did not decrease postharvest quality when compared with nonirradiated roses. Roses that received irradiation dosages of 0.75 and 1 kGy showed unacceptable quality. In a third experiment, roses that had or had not been inoculated with B. cinerea were irradiated at 0, 0.25, 0.5, and 0.75 kGy. Irradiation did not control B. cinerea populations, and rose quality decreased as dosage increased. In a fourth experiment to determine the effect of irradiation on B. cinerea, conidia on water-agar plates exposed to dosages ≤1, 2, and 4 kGy germinated at rates of ≈90%, 33%, and 2%, respectively, within 24 h.

Download Full-text