scholarly journals Video Imaging for Quantifying Cucumber Fruit Color

1993 ◽  
Vol 3 (4) ◽  
pp. 436-439 ◽  
Author(s):  
W.C. Lin ◽  
J.W. Hall ◽  
A. Klieber
Keyword(s):  
Chlorophyll Content ◽  
Sampling Technique ◽  
Grey Level ◽  
Visible Image ◽  
Video Imaging ◽  
Green Color ◽  
Cucumber Fruit ◽  
Satisfactory Precision ◽  
Average Grey Level ◽  
Highly Correlated

A video-imaging technique, using commercial software to process images obtained at 550 nm, was established to estimate chlorophyll content of cucumber fruit disks. The chlorophyll content of excised disks was extracted, determined, and regressed on the video-image grey level. They were linearly related. The change in grey level of the whole visible image accurately indicated the change of green color during fruit development on the vine and the loss of green color after 1 week of storage at 13C. The relationship of the chlorophyll content on grey level was quadratic for three imaging methods: 1) average grey level of the five disks; 2) average grey level of the whole cucumber image; and 3) average grey level of central one-third of the whole cucumber image. Chlorophyll content was most highly correlated to the grey level of the disks themselves (residual SD = 6.74 μg·cm-2), but this sampling technique was destructive. Both one-third of the fruit image (SD = 9.25 μg·cm-2) and the whole image (SD = 9.36 μg·cm-2) provided satisfactory precision. For simplicity, whole-fruit imaging is suitable for estimating fruit chlorophyll content and for quantifying fruit green color intensity. Potential use of this technique in product sorting and shelf life prediction of long English cucumbers is discussed.

scholarly journals Variations of Chlorophyll Content at Abies alba and Nepeta pannonica Species According to Phenophase and Harvesting Area

2019 ◽  
Vol 52 (1) ◽  
pp. 74-78
Author(s):  
S. Buhăianu ◽  
Doina Carmen Jităreanu
Keyword(s):  
Chlorophyll Content ◽  
Chlorophyll A ◽  
Photosynthetic Pigments ◽  
Photosynthetic Activity ◽  
Abies Alba ◽  
Chlorophyll B ◽  
Green Color ◽  
Yellow Coloration ◽  
Chlorophyll A And B ◽  
Chlorophyll A Content

Abstract Chlorophylls from plants are photosynthetic pigments. Their quantity offers valuable informations about photosynthetic activity, growing and developing of plants. Photosynthetic pigments decrease quantitatively during senescence process or in stress conditions. The present study has been realized in laboratory conditions with material harvested from spontaneous flora. The purpose of this research was the investigation of variations of chlorophyll content from samples of biological material collected from Nepeta pannonica L. and Abies alba Mill. plants, from Câmpulung Moldovenesc and Cacica areas, Suceava county, Romania. The targeted phenophases were growth and flowering. There were realized acetonic extracts from samples for spectrophotometric determinations. Obtained data were processed to estabilish chlorophyll a and b content. There were observed that at Abies alba species, from both locations, the chlorophyll a content grew during flowering phenophase, while the chlorophyll b content had little variations. At Nepeta pannonica species, the chlorophyll a and b content decreased visibly during the flowering, due to stress. Leaves of plants from this species presented a intense green color in the growing phenophase, while during flowering phenophase they had a purple or yellow coloration. Obtained results revealed a different dynamics of chlorophyll content at studied species.

THE RELATIONSHIP BETWEEN CHLOROPHYLL CONTENT AND RATE OF PHOTOSYNTHESIS IN SOYBEANS

1977 ◽  
Vol 57 (1) ◽  
pp. 1-5 ◽  
Author(s):  
B. R. BUTTERY ◽  
R. I. BUZZELL
Keyword(s):  
Linear Regression ◽  
Chlorophyll Content ◽  
Photosynthetic Rate ◽  
Regression Line ◽  
Quadratic Equation ◽  
Chlorophyll Contents ◽  
Rate Of Photosynthesis ◽  
Highly Correlated ◽  
The Relationship ◽  
Selection Of

Photosynthetic rate of soybeans (on a leaf area basis, PA) estimated from the incorporation of 14CO2 under field conditions was highly correlated with chlorophyll content of the side leaflets of the same leaves. Among a collection of 48 cultivars, the linear regression of PA on chlorophyll content accounted for 44% of the variation, whereas with a selection of genotypes with various mutant chlorophyll genes, the regression accounted for 81%. When the data for the two tests were re-calculated relative to the check cv. Altona, a quadratic equation between PA and chlorophyll accounted for nearly 90% of the variation. When photosynthetic rate was expressed on a unit chlorophyll basis (Pc), no significant differences among lines were established in the cultivar test. In the mutants test, significant differences in Pc were established with higher values of Pc associated with lower chlorophyll contents; a linear regression accounted for 45% of the variation. Transformation of the data from both experiments relative to Altona allowed the fitting of a common regression line (quadratic) which accounted for 63% of the variation. We suggest that initial screening of progenies in a breeding program for high photosynthetic rate could be done by measuring chlorophyll content.

scholarly journals Agronomic and sensory evaluation of lettuce in hydroponic system

2021 ◽  
Vol 37 ◽  
pp. e37074
Author(s):  
Jean Jefferson de Sá ◽  
Carolina Medeiros Vicentini-Polette ◽  
Marta Regina Verruma-Bernardi ◽  
Marta Helena Fillet Spoto ◽  
Fernando César Sala
Keyword(s):  
Chlorophyll Content ◽  
Direct Relationship ◽  
Shoot Length ◽  
Fresh Mass ◽  
Stem Length ◽  
Hydroponic System ◽  
Green Color ◽  
Instrumental Color ◽  
Commercial Cultivars ◽  
Number Of Leaves

Lettuce is the most important leafy vegetable in Brazil. Hydroponic lettuce cultivation has grown due to the viability of harvesting throughout the year. In this context, this study aimed to evaluate the agronomic characteristics, color, and preference of curly lettuce in the NFT hydroponic system. Six lineages (6601-1A, 6601-2L, 7016-6A, 7119-1B, 7223-1A, and 7224-4A) and two commercial cultivars (Brida and Vanda) of lettuce were used, in a completely randomized blocks design with four replications. Shoot length, root length, stem length, number of leaves, stem diameter, plant diameter, shoot fresh mass, root fresh mass, chlorophyll content, instrumental color, and sensory characteristics were evaluated. As for agronomic evaluation, the bolting of 6601-2L lettuce was relevant in different attributes. The Vanda lettuce and the lineage 7016-6A presented best performances for shoot fresh mass (399.44 and 378.63 g, respectively), while the lineages 7119-1B and 6601-2L present the worst performance (279.50 and 273.13 g, respectively). There was variation in chlorophyll content and luminosity, however, the evaluators did not notice differences between lettuces for brightness or green color, as well as for crunchy texture. Lettuces 6601-2L, 7224-4A, 6601-1A, Brida, 7223-1A, and 7119-1B were preferred. The variation among plants may be due to different situations, such as harvesting times and bolting, and a direct relationship between agronomic properties and preference among lettuces has not been established yet.

scholarly journals Effect of predrying treatments on the retention of quality characteristics of green peas (Pisum sativum L.) cv. Lincoln during mechanical drying

2016 ◽  
Vol 8 (2) ◽  
pp. 1049-1052
Author(s):  
Surekha Attri ◽  
Anju K Dhiman ◽  
Rakesh Kumar ◽  
Rakesh Sharma
Keyword(s):  
Ascorbic Acid ◽  
Pisum Sativum ◽  
Moisture Content ◽  
Chlorophyll Content ◽  
Value Added ◽  
Ascorbic Acid Content ◽  
Rehydration Ratio ◽  
Green Color ◽  
Pisum Sativum L ◽  
Green Peas

An experiment was conducted to standardize the predrying treatments with minimum loss to physicochemical characteristics of green peas (Pisum sativum L.) cv. Lincoln during drying process. In this study, moisture content (73%), TSS (15oB), chlorophyll content (28mg/100g) and ascorbic acid (54mg/100g) were recorded in green peas. Different predrying treatments used in this study for quality preservation of peas were T0, T1 and T2. From this study, it was concluded that Na2CO3, NaCl and sugars were responsible for the preservation of green color/ chlorophyll in peas during drying. On the basis of sensory evaluation T2 was found best among all because maximum green color was retained in this treatment. Therefore, it was further selected for physico-chemical analysis After drying there was decrease in moisture content (4%), chlorophyll content (17mg/100g) and ascorbic acid content (37.6mg /100g) while increase in TSS (22oB), reducing sugars (8.3%) and total sugars (20%) of peas. A rehydration ratio of 3:1 was observed for this treatment. This is a low cost technology for preservation of quality of peas. Dried peas can further be utilized for the preparation of various value added instant products round the year.

Agronomic and Morpho-Physiological Characterization of Some Advanced Lines being Selected in Durum Wheat Cultivated in Semi-Arid Conditions

2021 ◽  
pp. 51-64
Author(s):  
Messaoudi Noura ◽  
Benderradji Laid ◽  
Bouzerzour Hammena ◽  
Benmahammed Ammar ◽  
Brini Faiçal
Keyword(s):  
Grain Yield ◽  
Durum Wheat ◽  
Chlorophyll Content ◽  
Morphological Characters ◽  
Yield Potential ◽  
High Yield ◽  
Cell Integrity ◽  
Physiological Characterization ◽  
Kernel Weights ◽  
Highly Correlated

Knowledge of agro-physiological traits associated with drought tolerance would be useful for developing breeding materials for drought-prone environments. This study was conducted to estimate genetic variability among nine durum wheat genotypes in response to drought. Our results indicated that the effect of the campaign, genotype, and genotype × interaction was significant for the thirteen variables measured, except for the relative water content. The variability observed was greater for grain yield, biomass, ear fertility, straw and economic yields, chlorophyll content, and cell integrity. Heritability was high for the number of grains per ear and the chlorophyll content; medium for thousand kernel weights, low for grain yield, biomass, and economic yield, and zero for the rest of the variables measured. The results also showed that the agro-morphological characters were significantly linked to each other, unlike the physiological characters which showed non-significant relation between them and with the agro-morphological characters. This suggests that among the varieties evaluated, the selection of those which are tolerant and with high yield potential should therefore be made on a case-by-case basis and not based on a specific physiological character, a marker of tolerance, highly correlated with yield grain. The nine varieties evaluated were subdivided into three divergent clusters of three varieties each. Cluster C1 consists of the least performing varieties, unlike the other two clusters which bring appreciable gains for several characteristics including grain yield, biomass, the weight of 1000 grains, straw yield, and ear fertility and a marked improvement in chlorophyll content and a significant reduction in damage to the cell membrane by thermal stress. In conclusion and following their divergence, it is suggested to use the varieties of clusters C2 and C3 in crossing with the varieties of cluster C1 to improve and reconcile stress tolerance and yield potential in the same genetic background.

PENGARUH TERAPI WARNA HIJAU TERHADAP TINGKAT KECEMASAN MAHASISWA DALAM MENGHADAPI UJIAN

2020 ◽  
Vol 5 (1) ◽  
pp. 1-9
Author(s):  
Ance Siallagan
Keyword(s):  
Sleep Disturbances ◽  
Design Research ◽  
Sampling Technique ◽  
Total Sample ◽  
Heart Beat ◽  
Rank Test ◽  
Student Anxiety ◽  
Green Color ◽  
Anxiety Levels ◽  
The Individual

Introduction: Many students experience anxiety, especially when going to face an exam. The results of interviews with 10 beginning students at STIKes Santa Elisabeth Medan obtained data that 3 people experienced severe anxiety, 5 people experienced moderate anxiety and 2 people experienced mild anxiety just before the test. They experience sleep disturbances and lack of rest, decreased appetite, fast heart beat, frequent urination, decreased concentration of learning, and feel anxious to remember the exam is getting closer. Method: This type of research is pre-experimental with one-group pre-post test design research. The study was conducted at STIKes Santa Elisabeth Medan in March-April 2018. The total sample of 15 people with a sampling technique was purposive sampling by selecting samples based on criteria set by researchers. The study was conducted using an anxiety level questionnaire instrument and standard operating procedures for color therapy. The data obtained were analyzed using the Wilcoxon sign rank test, at a 95% confidence level.Result: Based on the results of the analysis, it is known that there is an effect of green color therapy on changes in the level of student anxiety in facing exams. Discussion: The green color causes an increase in serotonin levels which has an important role to control sleep-wake, eating behavior, controlling sensory transmission, mood, and a number of behaviors. Providing green color therapy will stimulate the release of serotonin, so that increased levels of serotonin can improve one's mood so that it can create a sense of happiness and reduce anxiety. Someone who is given green color therapy can help individuals to be able to control themselves and focus attention so that the individual can take the right response when in a tense situation. In this study, after being given the intervention of green color therapy respondents who have severe to moderate anxiety levels. While those who have moderate anxiety become mild anxiety. green color therapy can affect changes in student anxiety levels.

Isolation and Identification of Fungal Pathogen Associated with Post Harvest Deterioration of Cucumber (Cucumis sativus L.) Fruits in Three Selected Markets in Jos, Nigeria

2019 ◽  
pp. 1-8
Author(s):  
M. Ishaya ◽  
A. E. Anzaku ◽  
W. C. John ◽  
N. Janfa ◽  
O. Oke ◽  
...  
Keyword(s):  
Fungal Pathogens ◽  
Sampling Technique ◽  
Pathogenic Fungi ◽  
Geotrichum Candidum ◽  
Isolation And Identification ◽  
Cucumis Sativus L ◽  
Post Harvest ◽  
Fungal Isolates ◽  
Cucumber Fruit ◽  
Fruit Samples

Aim: This study was carried out to isolate, identify and characterize fungal pathogens associated with post-harvest spoilage of cucumber. Study Design: This research study was done using random sampling technique.  Place and Duration of Study: The experiment was carried out from March to June, 2019 at biology laboratory Federal College of Forestry, Jos. Methodology: Fungi isolates were obtained from diseased portions of the cucumber fruit samples cultured on PDA media and incubated at 28ºC2 for seven days. The mycelial were identified macroscopically and microscopically. Pathogenicity tests were conducted for all the fungal pathogens identified by inoculating healthy cucumber samples and incubating for ten days with the readings being taken at two day intervals. The data obtained were analyzed using ANOVA and means were separated using LSD at P ≤ 0.05. Results: Aspergillus fumigatus, Fusarium sp., Geotrichum candidum and Yeast sp were isolated and identified. Result showed that Gada biu market was the most heavily infested location with all the fungal isolates. Geotrichum candidum constituted the highest (50%) occurrence of fungal isolates from all locations. All the fungal isolates were found to be pathogenic on cucumber fruits, with Fusarium being the most destructive, followed by yeast and Geotrichum candidum and the least was Aspergilus fumigatus. Conclusion: The results obtained in this study showed the isolates identified were involved in Cucumber spoilage. Therefore, Careful handling of Cucumber fruits should be ensured to prevent the spread of these pathogenic fungi.

scholarly journals A rapid screening method to select microdialysis carriers for hydrophobic compounds

PLoS ONE ◽  
2021 ◽  
Vol 16 (9) ◽  
pp. e0256920
Author(s):  
Sin-Jie Wang ◽  
Hsiao-Ting Lu ◽  
Yu-Chao Wang ◽  
Hsin-Ying Huang ◽  
Chung-Shi Yang
Keyword(s):  
Specific Binding ◽  
Low Cost ◽  
Screening Method ◽  
Sampling Technique ◽  
Rapid Screening ◽  
Hydrophobic Compounds ◽  
Hydrophobic Substances ◽  
Highly Correlated ◽  
Catheter Tubing ◽  
Centrifugal Ultrafiltration

Microdialysis is a minimally invasive sampling technique which is widely applied in many fields including clinical studies. This technique usually has limitation on sampling hydrophobic compounds as aqueous solutions are commonly used as the perfusates. The relative recovery of hydrophobic compounds is often low and irreproducible because of the non-specific binding to microdialysis membranes or catheter tubing. Carriers such as cyclodextrins have been used to improve the recovery and consistency, however the identification of an optimal carrier can only be achieved after time-consuming and costly microdialysis experiments. We therefore developed a rapid, convenient, and low-cost method to identify the optimal carriers for sampling hydrophobic compounds with the use of centrifugal ultrafiltration. Doxorubicin was used as the model compound and its relative recoveries obtained from centrifugal ultrafiltration and from microdialysis were compared. The results show that the relative recoveries are highly correlated (correlation coefficient ≥ 0.9) between centrifugal ultrafiltration and microdialysis when different types or different concentrations of cyclodextrins were used as the carriers. In addition to doxorubicin, this method was further confirmed on three other drugs with different hydrophobicity. This method may facilitate and broaden the use of microdialysis perfusion on sampling or delivering hydrophobic substances in various applications.

scholarly journals RELATIONSHIP QUALITY OF SERVICE AND SERVICESCAPE WITH CUSTOMER SATISFACTION IN THE MAIN BRANCH OFFICE OF HEALTH IN BOGOR

2020 ◽  
Vol 4 (1) ◽  
pp. 31-35
Author(s):  
Hari Muharam ◽  
Sufrin Hannan ◽  
Yerry Gerson Rumawak
Keyword(s):  
Customer Satisfaction ◽  
Service Quality ◽  
Functional Relationship ◽  
Sampling Technique ◽  
Coefficient Of Determination ◽  
Analysis Techniques ◽  
Multiple Correlation Analysis ◽  
Highly Correlated ◽  
Branch Office

The purpose of this study is to determine whether there is a relationship between service quality and servicescape with customer satisfaction both partially and together. The population in this study were customers of the Main Branch Office BPJS Health Bogor City as many as 457 customers, the sampling technique using the Slovin formula after 231 samples were obtained. The research instrument was a questionnaire. The collected data is then processed using simple and multiple correlation analysis techniques with the help of SPSS (Statistical Package for Social Science) software version 25.0. The results showed that: 1. Service quality is partially correlated positively to strong criteria with customer satisfaction, 2. Servicescape is partially strongly positively related to customer satisfaction, 3. Service quality and Servicescape together are positively highly correlated with customer satisfaction with correlation coefficient values equal to 0.830 then the functional relationship obtained by the equation Ŷ = 16.043 + 0.550X1 + 0.589X2 and the coefficient of determination or contribution of service quality and servicescape together with customer satisfaction of 0.688 or 68.6%.

Sign in / Sign up

Export Citation Format

Share Document