scholarly journals PRE- AND POSTHARVEST CHILL-HARDENING OF SWEET BASIL

HortScience ◽  
1990 ◽  
Vol 25 (9) ◽  
pp. 1165a-1165
Author(s):  
Diana L. Dostal ◽  
Arthur C. Cameron
Keyword(s):  
Shelf Life ◽  
Dark Period ◽  
Chilling Injury ◽  
Ocimum Basilicum ◽  
Light Period ◽  
The Other ◽  
Sweet Basil ◽  
Chill Hardening

Postharvest shelf life of fresh sweet basil (Ocimum basilicum L.) at 5°C is only 3 to 4 d due to development of chilling injury symptoms. Plants chill-hardened at 10°C for 4 h daily (2 h at end of the light period and 2 h at the beginning of the dark period) for 2 d prior to harvest had 3 d extended shelf life at 5°C. Increasing the duration of preharvest chill-hardening did not further improve the shelf life. Plants were chill-hardened at 10°C for 4 h daily for one week at different periods during the day. Four-, 5- and 6-week-old basil were used in each of three consecutive runs. With the 4- and 5-week-old basil, chill-hardening at the beginning of the day extended average shelf life by 1 and 1.5 d at 5°C, respectively. Shelf life was either decreased or not affected by the other periods of preharvest chilling. Postharvest chill-hardening of packaged sweet basil for 1 d at 10°C before transfer to 5°C increased shelf life by 5 d. Postharvest chill-hardening has potential for reducing chilling injury of packaged sweet basil.

scholarly journals Pre- and Postharvest Temperature Conditioning of Greenhouse-grown Sweet Basil

HortScience ◽  
1997 ◽  
Vol 32 (1) ◽  
pp. 114-116 ◽  
Author(s):  
Diana L. Lange ◽  
Arthur C. Camero
Keyword(s):  
Shelf Life ◽  
Dark Period ◽  
Chilling Injury ◽  
Visual Quality ◽  
Light Period ◽  
Sweet Basil ◽  
Good Potential ◽  
Postharvest Life ◽  
Chill Hardening

Postharvest shelf life (defined by visual quality) of fresh, greenhouse-grown sweet basil (Ocimum basilicum L.) at 5 °C was only 3 to 4 d due to the appearance of chilling injury symptoms. Plants chill-hardened at 10 °C for 4 h daily (2 h at the end of the light period and 2 h at the beginning of the dark period) for 2 d, before harvesting and packaging, had ≈3 d longer postharvest life. Four- to 6-week-old plants were chill-hardened for 1 week at several periods during the day. Chill-hardening at the beginning of the day extended the average shelf life of cuttings from 4- to 5-week-old plants by 1 and 1.5 d, respectively. Shelf life either was decreased or not affected by the other periods of preharvest hardening. More importantly, postharvest chill-hardening of packaged sweet basil for 1 day at 10 °C in darkness before transfer to 5 °C increased average shelf life by 5 d. Good potential exists for postharvest chill-hardening of packaged sweet basil since this method is effective and convenient.

scholarly journals Postharvest Shelf Life of Sweet Basil (Ocimum basilicum)

HortScience ◽  
1994 ◽  
Vol 29 (2) ◽  
pp. 102-103 ◽  
Author(s):  
Diana D. Lange ◽  
Arthur C. Cameron
Keyword(s):  
Shelf Life ◽  
Chilling Injury ◽  
Visual Quality ◽  
Time Of Day ◽  
Ocimum Basilicum ◽  
Sweet Basil ◽  
Storage Temperatures

Shelf life (defined by visual quality) of freshly harvested greenhouse-grown sweet basil was maintained for an average of ≈ 12 days at 15C. Chilling injury symptoms were severe at storage temperatures of 5C and below. Shelf life was found to be only 1 and 3 days at 0 and 5C, respectively. Moderate chilling injury was noted at 7.5 and 10C. Harvesting sweet basil later in the day (i.e., 1800 or 2200 hr) increased shelf life by almost 100% when harvested shoots were held at 10, 15, and 20C, compared to harvesting at 0200 or 0600 hr. However, the time of day of harvest did not alter the development of visual chilling injury symptoms or improve shelf life at 0 or 5C.

scholarly journals Association of Dark Opening of Stomata with Air Pollution Sensitivity of Irish Potatoes

2001 ◽  
Vol 126 (1) ◽  
pp. 37-43
Author(s):  
Atilla B. Goknur ◽  
Theodore W. Tibbitts
Keyword(s):  
Stomatal Conductance ◽  
Air Pollutants ◽  
Dark Period ◽  
High Sensitivity ◽  
Irish Potato ◽  
Light Period ◽  
The Other ◽  
Partial Opening ◽  
Controlled Environments

The magnitude of dark opening of stomata on leaves of Irish potato (Solanum tuberosum L.) was studied to determine if this opening was related to the high sensitivity of these plants to air pollutants. Stomatal opening was studied over diurnal periods both in the field and in controlled environments. In both environments, stomatal conductance decreased rapidly at the initiation of dark to 0.1 cm·s-1 but then increased to 0.2 cm·s-1 over the dark period. However conductance was always less in the dark than in the light (0.3 to 0.9 cm·s-1). During the early part of the dark period, stomatal conductance in controlled environments was not as great as in the field, but conductance was similar in both environments over the latter part of the dark period. Cultivars Norchip and Kennebec had smaller conductances during the first hours of the dark than Haig or Katahdin, and all cultivars increased in conductance over the dark period. `Haig' showed slightly higher conductance than the other three during the last 4 hours of the dark period. Injury to `Haig' from 3-hour fumigations with sulfur dioxide (SO2) or ozone (O3) demonstrated that exposures during the day generally produced more injury than during the night, although exposures with SO2 during the last 3 hours of the light period produced similar injury to exposures at the end of the dark period. Thus, although partial opening during the dark may be permitting some pollution injury, it is concluded that previous published reports of similar opening of stomata on Irish potatoes during the light and dark periods, and equal or greater pollution injury during the dark compared with the light period, were not substantiated and apparently resulted from procedural artifacts.

Photoperiod Alters Diurnal Carbon Partitioning into Sorbitol and Other Carbohydrates in Apple

1997 ◽  
Vol 24 (5) ◽  
pp. 587 ◽  
Author(s):  
Z. Wang ◽  
Z. Yuan ◽  
B. Quebedeaux
Keyword(s):  
Malus Domestica ◽  
Dark Period ◽  
Sucrose Concentration ◽  
Carbon Partitioning ◽  
Light Period ◽  
The Other ◽  
Sucrose Accumulation ◽  
Photosynthate Partitioning ◽  
Apple Leaves ◽  
Mature Apple

The current experiments were designed to determine the diurnal carbon partitioning among sorbitol, sucrose, and starch in mature apple (Malus domestica Borhk. cv. Gala) leaves and to determine whether photoperiod altered photosynthate partitioning among carbohydrates. Sorbitol accounted for > 80% of newly fixed 14C-labelled carbohydrate during the light period. Forty-seven percent of sorbitol that had accumulated at the end of the light period disappeared during the dark period. As photoperiod increased from 1 to 10 h, sorbitol, glucose, fructose, and starch concentrations in mature apple leaves increased, but were stable from 10 to 14 h. Sucrose concentration, on the other hand, decreased slightly as photoperiod increased. As a result, sorbitol to sucrose ratios increased from 2 in the 1-h photoperiod to 5 in the 10-h photoperiod. The relative partitioning of 14C into sorbitol increased, whereas the partitioning into sucrose, glucose, and fructose decreased as photoperiod increased from 1 to 10 h. Our results suggest that longer photoperiods favoured sorbitol over sucrose accumulation while shorter photoperiods favoured sucrose over sorbitol synthesis. The observed changes in sorbitol and sucrose concentrations with changes in photoperiod may result from different rates of synthesis and export.

Reduction of visible chilling injury in sweet basil ( Ocimum basilicum L.) using artificial illumination

2017 ◽  
Vol 6 ◽  
pp. 15-21 ◽  
Author(s):  
Nativ Dudai ◽  
Omer Naharan ◽  
Nirit Bernstein ◽  
Alona Shachter ◽  
Ronit Rud ◽  
...  
Keyword(s):  
Chilling Injury ◽  
Ocimum Basilicum ◽  
Sweet Basil ◽  
Artificial Illumination

scholarly journals Additional Blue LED during Cultivation Induces Cold Tolerance in Tomato Fruit but Only to an Optimum

Biology ◽  
2022 ◽  
Vol 11 (1) ◽  
pp. 101
Author(s):  
Fahrizal Yusuf Affandi ◽  
Teddy Prayoga ◽  
Theoharis Ouzounis ◽  
Habtamu Giday ◽  
Julian C. Verdonk ◽  
...  
Keyword(s):  
Shelf Life ◽  
Cold Tolerance ◽  
Tomato Fruit ◽  
Chilling Injury ◽  
The Other ◽  
Scavenging Activity ◽  
Led Lighting ◽  
Blue Led ◽  
Red Color

Tomato is a chilling-sensitive fruit. The aim of this study is to examine the role of preharvest blue LED lighting (BL) to induce cold tolerance in ‘Foundation’ tomatoes. Blue and red supplemental LED light was applied to achieve either 0, 12 or 24% additional BL (0B, 12B and 24B). Mature green (MG) or red (R) tomatoes were harvested and cold stored at 4 °C for 0, 5, 10, 15 and 20 d, and then stored for 20 d at 20 °C (shelf life). Chilling injury (CI) indices, color and firmness, hydrogen peroxide, malondialdehyde, ascorbic acid and catalase activity were characterized. At harvest, R tomatoes cultivated at 12B were firmer and showed less coloration compared to fruit of other treatments. These fruits also showed higher loss of red color during cold storage and lower CI symptoms during shelf-life. MG tomatoes cultivated at 12B showed delayed coloring (non-chilled) and decreased weight loss (long cold stored) during shelf life compared to fruit in the other treatments. No effects of light treatments, both for MG and R tomatoes, were observed for the selected antioxidant capacity indicators. Improved cold tolerance for R tomatoes cultivated at 12B points to lycopene having higher scavenging activity at lower concentrations to mitigate chilling injury.

scholarly journals Controlled-atmosphere Storage of Sweet Basil

HortScience ◽  
1998 ◽  
Vol 33 (4) ◽  
pp. 741-743 ◽  
Author(s):  
Diana L. Lange ◽  
Arthur C. Cameron
Keyword(s):  
Chilling Injury ◽  
Ocimum Basilicum ◽  
Stem Cuttings ◽  
Controlled Atmosphere Storage ◽  
Controlled Atmospheres ◽  
Sweet Basil ◽  
Continuous Stream ◽  
Air Control ◽  
Atmosphere Storage ◽  
And Storage

The effect of controlled atmospheres (CA) on the development of injury symptoms and storage life of sweet basil (Ocimum basilicum L.) cuttings was assessed. Three-node basil stem cuttings were placed in micro-perforated low-density polyethylene packages and stored in the dark at 20 °C in a continuous stream of nitrogen containing the following percentages of O2/CO2:21/0 (air), 21/5, 21/10, 21/15, 21/20, 21/25, 0.5/0, 0.5/5, 1/0, 1.5/0, 2/0, 1/5, 1.5/5, 1.5/7.5, and 1.5/10. Cuttings stored in an atmosphere of <1% O2 developed dark, water-soaked lesions on young tissue after only 3 days. Fifteen percent or more CO2 caused brown spotting on all tissue. Sweet basil stored in 1.5% O2/0% CO2 had an average shelf life of 45 days compared with 18 days for the air control. None of the CA combinations tested alleviated chilling injury symptoms induced by storage at 5 °C.

scholarly journals Cultivar, Packaging, and Storage Temperature Differences in Postharvest Shelf Life of Okra

1992 ◽  
Vol 2 (3) ◽  
pp. 350-352 ◽  
Author(s):  
P. Perkins-Veazie ◽  
J.K. Collins
Keyword(s):  
Shelf Life ◽  
High Density Polyethylene ◽  
Storage Temperature ◽  
Chilling Injury ◽  
High Density ◽  
The Other ◽  
Storage Duration ◽  
And Storage

Okra stored at 3C in 12.7-pm high-density polyethylene (HDPE) bags developed less chilling injury than fruit stored in plastic boxes. Okra held in HDPE bags at 12.5C for 8 days had more decay and reduced overall appearance than fruit held in plastic boxes. `Emerald Green' okra lost more weight in storage than the other four cultivars regardless of temperature or storage duration, while `Blondy' had the most decay. `Annie Oakley' and `Clemson Spineless' had better shelf life than the other cultivars.

scholarly journals Preharvest Abscisic Acid Application to Alleviate Chilling Injury of Sweet Basil (Ocimum basilicum L.) during Cold Storage

HortScience ◽  
2019 ◽  
Vol 54 (1) ◽  
pp. 155-161 ◽  
Author(s):  
Aditi Satpute ◽  
Bryce Meyering ◽  
Ute Albrecht
Keyword(s):  
Abscisic Acid ◽  
Open Field ◽  
Cold Storage ◽  
Foliar Application ◽  
Chilling Injury ◽  
Ocimum Basilicum ◽  
Field Conditions ◽  
Postharvest Storage ◽  
Sweet Basil ◽  
Fresh Cut

Fresh-cut sweet basil (Ocimum basilicum L.) is highly sensitive to low temperatures during postharvest storage. This study investigates whether preharvest foliar application of different concentrations of abscisic acid (ABA) can increase tolerance of the commercial basil varieties ‘Di Genova’ and ‘Nufar’ to chilling injury (CI) during postharvest storage at 3.5 °C and at 7 °C. Experiments were conducted under greenhouse and commercial open-field conditions in southwest Florida during the 2017/2018 growing season. Our results showed that greenhouse-grown plants were less affected by CI during 9 days of storage at 3.5 °C when treated with 1000 mg/L or 1500 mg/L ABA and at 7 °C storage compared with the water control, but effects varied by experiment. Preharvest applications of 1000 mg/L ABA were sufficient in reducing CI during cold storage at 3.5 °C in basil grown under open-field conditions; however, at 7 °C postharvest storage, chilling-induced damage did not differ between ABA and untreated plants. Electrolyte leakage analysis of leaves confirmed the beneficial effects of ABA on alleviating chilling-induced injury. Under greenhouse conditions, preharvest applications of 1000 mg/L ABA were more effective when plants were harvested at 1300 or 1530 hr than at 1100 hr. Our results suggest that 1000 mg/L foliar preharvest applications of ABA in combination with afternoon harvest are an effective strategy to alleviate CI damage during postharvest storage at temperatures less than 4 °C and to extend the shelf life of greenhouse or field-grown, fresh-cut basil.

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