scholarly journals Increasing nutrient levels promote growth and flower quality in lilies grown under soilless culture

2017 ◽  
Vol 44 (No. 4) ◽  
pp. 171-177 ◽  
Author(s):  
Malik G. Al-Ajlouni ◽  
Jamal Y. Ayad ◽  
Yahia A. Othman
Keyword(s):  
Electrical Conductivity ◽  
Nutrient Supply ◽  
Soilless Culture ◽  
Flower Longevity ◽  
Flower Buds ◽  
Content Index ◽  
Flower Quality ◽  
The Impact ◽  
Different Doses

This research was aimed at assessing the impact of different doses of nutrients on growth and flower quality of the Asiatic hybrid Lilium ((Lilium × elegans Thunb.) cv. ‘Fangio’) under the soilless culture. Five nutrient (fertigation) regimes were applied (T1: daily, T2: twice a week, T3: weekly, T4: twice a month and T5: control). Increasing the nutrient supply increased chlorophyll content index (SPAD, 45–93%), leaf area (30–55%), number of flowers per plant (25–67%) and substrate electrical conductivity (EC: 28–300%) compared to control. Although T3 (weekly nutrient supply) had lower shoot N, P, K<sup>+</sup> and Ca<sup>+2</sup> concentrations than T1, this regimen increased the number of flower buds by 20% and flower longevity by 56% compared to T1. Overall, weekly nutrient application is effective at maintaining flower quality and yield in the ‘Fangio’ lily, and compares favourably with programs in which fertigation is more frequent and the level of total applied nutrients is higher.

scholarly journals Gibberellin4+7, Benzyladenine, and Supplemental Light Improve Postharvest Leaf and Flower Quality of Cold-stored `Stargazer' Hybrid Lilies

1998 ◽  
Vol 123 (4) ◽  
pp. 563-568 ◽  
Author(s):  
Anil P. Ranwala ◽  
William B. Miller
Keyword(s):  
Cold Storage ◽  
Storage Temperature ◽  
Postharvest Quality ◽  
Flower Longevity ◽  
Flower Bud ◽  
Leaf Injury ◽  
Leaf Chlorosis ◽  
Bud Opening ◽  
Flower Quality

Experiments were conducted to evaluate storage temperature, storage irradiance and prestorage foliar sprays of gibberellin, cytokinin or both on postharvest quality of Oriental hybrid lilies (Lilium sp. `Stargazer'). Cold storage of puffy bud stage plants at 4, 7, or 10 °C in dark for 2 weeks induced leaf chlorosis within 4 days in a simulated consumer environment, and resulted in 60% leaf chlorosis and 40% leaf abscission by 20 days. Cold storage also reduced the duration to flower bud opening (days from the end of cold storage till the last flower bud opened), inflorescence and flower longevity, and increased flower bud abortion. Storage at 1 °C resulted in severe leaf injury and 100% bud abortion. Providing light up to 40 μmol·m-2·s-1 during cold storage at 4 °C significantly delayed leaf chlorosis and abscission and increased the duration of flower bud opening, inflorescence and flower longevity, and reduced bud abortion. Application of hormone sprays before cold storage affected leaf and flower quality. ProVide (100 mg·L-1 GA4+7) and Promalin (100 mg·L-1 each GA4+7 and benzyladenine (BA)) effectively prevented leaf chlorosis and abscission at 4 °C while ProGibb (100 mg·L-1 GA3) and ABG-3062 (100 mg·L-1 BA) did not. Accel (10 mg·L-1 GA4+7 and 100 mg·L-1 BA) showed intermediate effects on leaf chlorosis. Flower longevity was increased and bud abortion was prevented by all hormone formulations except ProGibb. The combination of light (40 μmol·m-2·s-1) and Promalin (100 mg·L-1 each GA4+7 and BA) completely prevented cold storage induced leaf chlorosis and abscission.

scholarly journals Vernalization Duration and Light Intensity Influence Flowering of Three Hybrid Nobile Dendrobium Cultivars

HortScience ◽  
2011 ◽  
Vol 46 (3) ◽  
pp. 406-410 ◽  
Author(s):  
Min Lin ◽  
Terri W. Starman ◽  
Yin-Tung Wang ◽  
Genhua Niu
Keyword(s):  
Light Intensity ◽  
Flowering Time ◽  
Photon Flux ◽  
Flower Initiation ◽  
Flower Longevity ◽  
Photosynthetic Photon Flux ◽  
Flower Diameter ◽  
Flower Quality ◽  
Delayed Flowering

The flowering time and flower quality of three hybrid Dendrobium nobile cultivars in relation to light intensity during cooling and duration of vernalization were studied in the first experiment. Mature Dendrobium Red Emperor ‘Prince’, Den. Sea Mary ‘Snow King’, and Den. Love Memory ‘Fizz’ plants were vernalized at 10 °C under 300 to 350 μmol·m−2·s−1 photosynthetic photon flux (PPF) (12-h photoperiod) or darkness, each with four cooling durations (2, 4, 6, or 8 weeks). Plants were forced in a greenhouse after vernalization. At least 4 weeks of 10 °C cooling in light was needed for complete flower initiation of Den. Red Emperor ‘Prince’, whereas Den. Sea Mary ‘Snow King’ and Den. Love Memory ‘Fizz’ only needed 2 weeks of 10 °C cooling regardless of light. For all three cultivars, darkness during vernalization slightly delayed flowering and resulted in fewer but larger flowers. Longer cooling duration delayed flowering, decreased flower longevity, and produced more and larger flowers. In a second experiment, Den. Love Memory ‘Fizz’ plants were vernalized at 15 °C for 4 weeks under a 12-h photoperiod and PPF of 0, 50, 100, or 200 μmol·m−2·s−1. Compared with 200 μmol·m−2·s−1, low PPF at 50 or 100 μmol·m−2·s−1 did not affect flowering time or flower qualities; however, darkness delayed flowering and reduced flower qualities except flower diameter.

scholarly journals Particle Size of Volcanic Tuff Improves Shoot Growth and Flower Quality of Asiatic Hybrid Lily Using Soilless Culture

2017 ◽  
Vol 27 (2) ◽  
pp. 223-227 ◽  
Author(s):  
Malik G. Al-Ajlouni ◽  
Jamal Y. Ayad ◽  
Yahia A. Othman
Keyword(s):  
Particle Size ◽  
Leaf Area ◽  
Plant Morphology ◽  
Dry Weight ◽  
Nutrient Content ◽  
Soilless Culture ◽  
Chlorophyll Content And Fluorescence ◽  
Volcanic Material ◽  
Flower Quality

Soilless substrates enhance growing environment, nutrient content, and water quality in the growing medium. The objective of this study was to assess the influence of substrate particle size on growth and flower quality (flower number and length per plant) of two asiatic hybrid lily (Lilium ×elegans) cultivars Fangio and Ercolano. Plants were grown in 12-L pot under greenhouse conditions. Five grades of particle-size substrate, consisting of granulated volcanic material (tuff) were used as treatments. These sizes were 0 to 2, 0 to 4, 0 to 8, 2 to 4, and 4 to 8 mm. Fertigation was applied daily. Plant morphology, physiology, and flower quality were determined during flowering stage. Treatments of 2 to 4- and 4 to 8-mm tuff had lower water holding capacity (WHC), bulk density, electrical conductivity (EC), and pH compared with 0 to 2- and 0 to 4-mm tuff. In addition, plant height, leaf area, and flower quality of ‘Fangio’ were higher compared with ‘Ercolano’. Chlorophyll content and fluorescence were similar among all treatments. Leaf fresh weight, leaf area, shoot dry weight, root dry weight, and flower quality were higher in sizes of 0 to 4-, 2 to 4-, and 4 to 8-mm than 0 to 2-mm tuff, especially those from ‘Fangio’. The 0 to 4-mm substrate had an optimal and consistent flower quality results in both cultivars when compared with other tuff sizes. Overall, the results presented here suggest that using 0 to 4-mm tuff substrate holds promise for improving growth and flower quality of asiatic hybrid lily grown under soilless culture.

scholarly journals Determining Optimal Electrical Conductivity Levels and Elements for Extended Vase Life of Cut Roses

2021 ◽  
Vol 31 (5) ◽  
pp. 577-588
Author(s):  
Erin M.R. Clark ◽  
John M. Dole ◽  
Jennifer Kalinowski
Keyword(s):  
Electrical Conductivity ◽  
Postharvest Quality ◽  
Vase Life ◽  
Negative Effects ◽  
Initial Ph ◽  
Water Ph ◽  
Fourth Experiment ◽  
The Impact ◽  
Cut Rose

Six experiments were conducted using three cultivars to investigate the impact of water electrical conductivity (EC) and the addition of nutrients to vase solutions on postharvest quality of cut rose (Rosa hybrids) stems. Postharvest quality of cut ‘Freedom’ rose stems was evaluated using solutions containing either distilled water with sodium chloride (DW+NaCl) or DW+NaCl with the addition of a commercial floral preservative (holding solution containing carbohydrates and biocide) to generate a range of EC values (Expts. 1 and 2). The third experiment compared the effect of different EC levels from the salts NaCl, sodium sulfate (Na2SO4), and calcium chloride (CaCl2). The fourth experiment investigated EC’s impact on rose stems with the addition of two rose cultivars (Charlotte and Classy). When ‘Freedom’ stems were subjected to DW+NaCl, the longest vase life was achieved with 0.5 dS·m–1. The addition of holding solution not only extended vase life but also counteracted the negative effects of high EC with maximum vase life occurring at 1.0 dS·m–1. Furthermore, stems in the holding solution experienced significantly less bent neck and the flowers opened more fully than those in DW. Stems placed in DW with a holding solution also experienced more petal bluing, pigment loss, necrotic edges, and wilting than those held in DW alone. This effect was likely due to increased vase life. Salt solutions containing Na2SO4 and CaCl2 resulted in extended vase life at 1.0 dS·m–1, but increasing salt levels decreased overall vase life. As EC increased, regardless of salt type, water uptake also increased up to a maximum at 0.5 or 1.0 dS·m–1 and then continually declined. Maximum vase life was observed at 1.5 dS·m–1 for cut ‘Charlotte’ stems, and at 1.0 dS·m–1 for ‘Classy’ with the addition of a holding solution. Physiological effects were different based on cultivar, as observed with Charlotte and Freedom flowers that opened further and had less petal browning than Classy flowers. ‘Freedom’ had the greatest pigment loss, but this effect decreased with increasing EC. Further correlational analysis showed that in water-only solutions, initial and final EC accounted for 44% and 41% of the variation in vase life data, respectively, whereas initial pH accounted for 24% of variation. However, the presence of carbohydrates and biocides from the holding solution was found to have a greater effect on overall vase life compared with water pH or EC. Finally, in Expts. 5 and 6, cut ‘Freedom’ stems were subjected to DW solutions containing 0.1, 1, 10, or 100 mg·L–1 boron, copper, iron, potassium, magnesium, manganese, or zinc. None of these solutions increased vase life. Conversely, 10 or 100 mg·L–1 boron and 100 mg·L–1 copper solutions reduced vase life. Finally, the addition of NaCl to a maximum of 0.83 dS·m–1 increased the vase life in all solutions. These analyses highlight the importance of water quality and its elemental constituents on the vase life of cut rose stems and that the use of a holding solution can overcome the negative effects of high EC water.

scholarly journals Physiological quality of soybean seeds in response to doses of basalt powder

2020 ◽  
Vol 9 (8) ◽  
pp. e840986314
Author(s):  
Jorge González Aguilera ◽  
Alan Mario Zuffo ◽  
Rafael Felippe Ratke ◽  
Charline Zaratin Alves ◽  
Roney Eloy Lima ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Mechanical Damage ◽  
Dry Mass ◽  
Soybean Seeds ◽  
Bed Bug ◽  
Normality Test ◽  
Physiological Quality ◽  
First Time ◽  
Different Doses

The use and incorporation of basalt powder in the soil have grown every year, and there are still no studies showing its effects on the physiological quality of soybean seeds. Thus, considering the importance of this response in the production system, the objective of the present work was to evaluate the physiological condition of soybean seeds after applying different doses of basalt powder in the soil. The experimental design used was completely randomized in a 3 × 4 factorial scheme, with three replications. The treatments consisted of three soybean cultivars, and four doses of basalt powder (0, 1, 3, and 5 t ha-1) produced in the 2018/2019 harvest in the region of Chapadão do Sul, MS. The tests carried out were: first germination count, germination, electrical conductivity, dry mass of the upper plant and roots, and tetrazolium test (vigor, viability, mechanical damage, moisture, and bed bug damage). The results were submitted to the normality test and analysis of variance, followed by comparisons of means by the Tukey test at the level of 5% probability. The results showed for the first time the combined effects of both factors tested only on the variables: electrical conductivity, root length, vigor, viability, and mechanical damage. The response obtained was dependent on the cultivars evaluated, which differed for all measured characteristics.

Hormone Sprays and Supplemental Light Prevent Cold-storage-induced Postharvest Leaf Chlorosis and Abscission in `Stargazer' Hybrid Lilies

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 536c-536
Author(s):  
Anil P. Ranwala ◽  
William B. Miller
Keyword(s):  
Cold Storage ◽  
Storage Temperature ◽  
Flower Longevity ◽  
Flower Bud ◽  
Flower Opening ◽  
Foliar Sprays ◽  
Leaf Chlorosis ◽  
Bud Opening ◽  
Flower Quality

Rapid leaf chlorosis and abscission limits the use of cold storage for post-production short-term holding of potted lilies. We investigated the effects of storage temperature, storage irradiance and pre-storage foliar sprays of gibberellin and/or cytokinin on postharvest leaf and flower quality of Lilium sp. `Stargazer' hybrid lilies. Storage of “puffy bud” stage plants at 4, 7, or 10 °C in dark for 2 weeks induced leaf chlorosis within 4 days in a simulated consumer environment, and resulted in 60% leaf chlorosis and 40% leaf abscission by 20 days. Cold-storage also reduced the duration of flower bud opening, inflorescence and flower longevity, and increased flower bud abortion. Providing light up to 40 μmol·m–2·s–1 during cold-storage at 4 °C significantly delayed leaf chlorosis and abscission and increased the duration of flower bud opening, inflorescence and flower longevity. Foliar sprays of ProVide (100 mg·L–1 GA4+7) and Promalin [100 mg·L–1 GA4+7 and 100 mg·L–1 benzyladenine (BA)] effectively prevented leaf chlorosis and abscission at 4 °C, while ProGibb (100 mg·L–1 GA3) and ABG-3062 (100 mg·L–1BA) were not effective. Accel (10 mg·L–1 GA4+7 and 100 mg·L–1 BA) showed intermediate effects on leaf chlorosis. Flower longevity was increased and bud abortion was prevented by all hormone formulations except ProGibb. The combination of light (40 μmol·m–2·s–1) and Promalin (100 mg·L–1 GA4+7 and 100 mg·L–1 BA) completely prevented cold-storage induced leaf chlorosis and abscission and significantly improved flower opening and overall plant quality.

scholarly journals Brief Online Mindfulness Training

2016 ◽  
Vol 22 (1) ◽  
pp. 75-80 ◽  
Author(s):  
Kathi J. Kemper
Keyword(s):  
Health Professionals ◽  
Online Training ◽  
Mindfulness Training ◽  
Five Facet Mindfulness Questionnaire ◽  
Self Reflection ◽  
Mindful Attention Awareness Scale ◽  
The Impact ◽  
Different Doses

Background. Online training is feasible, but the impact of brief mindfulness training on health professionals needs to be better understood. Methods. We analyzed data from health professionals and trainees who completed self-reflection exercises embedded in online mindfulness training between May 2014 and September, 2015; their changes in mindfulness were measured using standardized scales. Results. Participants included nurses (34%), physicians (24%), social workers and psychologists (10%), dietitians (8%), and others (25%); 85% were women, and 20% were trainees. The most popular module was Introduction to Mindfulness (n = 161), followed by Mindfulness in Daily Life (n = 146), and Mindful Breathing and Walking (n = 129); most (68%) participants who took 1 module took all 3 modules. There were no differences in participation in any module by gender, trainee status, or profession. Completing modules was associated with small but significant improvements on the Cognitive and Affective Mindfulness Scale–Revised, the Mindful Attention Awareness Scale, and the Five Facet Mindfulness Questionnaire ( P < 0.001 for all). Conclusion. Online training reaches diverse health professionals and is associated with immediate improvements in mindfulness. Additional research is warranted to compare the long-term cost-effectiveness of different doses of online and in-person mindfulness training on clinician burnout and quality of care.

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