scholarly journals Soluble Solids and Titratable Acid Contents in Different Portions in Maturing Satsuma Mandarin Fruit as Affected by Water Stress.

2002 ◽  
Vol 71 (1) ◽  
pp. 1-7 ◽  
Author(s):  
Doo Gyung Moon ◽  
Fusao Mizutani
Keyword(s):  
Water Stress ◽  
Soluble Solids ◽  
Satsuma Mandarin ◽  
Titratable Acid

ETHEPHON AS A CHEMICAL HARVESTING AID FOR THE LATE SEASON HIGHBUSH BLUEBERRY COVILLE

1977 ◽  
Vol 57 (4) ◽  
pp. 1099-1102 ◽  
Author(s):  
F. R. FORSYTH ◽  
D. L. CRAIG ◽  
R. STARK
Keyword(s):  
Total Yield ◽  
Soluble Solids ◽  
Yield Reduction ◽  
Average Weight ◽  
Highbush Blueberry ◽  
Ripe Fruit ◽  
Titratable Acid ◽  
Berry Weight ◽  
The Mean ◽  
Solids Content

Single applications of ethephon (1,000 pm) were made at three treatment dates to 20-yr-old Coville highbush blueberry plants. Berry weight, titratable acid, soluble solids content and yield were recorded. Average weight per berry was not consistently different in treated berries than in untreated but in both years the second and third sprays decreased the mean berry weight faster than occurred in the controls or first spray. Total yield was only slightly affected by treatment, indicating that a yield reduction would not be expected through the use of ethephon. Ethephon increased the rate at which the soluble solids and titratable acid (as citric) reached the normal level for ripe fruit.

scholarly journals Row spacing, plant density, sowing and harvest times for sweet sorghum1

2017 ◽  
Vol 47 (4) ◽  
pp. 408-415 ◽  
Author(s):  
Josefa Maria Francieli da Silva ◽  
Alek Sandro Dutra ◽  
Felipe Thomaz da Camara ◽  
Antônio Alves Pinto ◽  
Francisco Edson da Silva
Keyword(s):  
Water Stress ◽  
Plant Height ◽  
Sweet Sorghum ◽  
Dry Matter ◽  
Plant Density ◽  
Stem Diameter ◽  
Soluble Solids ◽  
Row Spacing ◽  
Main Crop ◽  
As Effects

ABSTRACT Along with sugarcane, which is the main crop used for ethanol production, the sweet sorghum is a promising agronomic and industrial alternative for cultivation in water-stress regions. This study aimed at assessing the row spacing (0.70 m, 0.80 m and 0.90 m) and plant density (80,000 plants ha-1; 100,000 plants ha-1; 120,000 plants ha-1; and 140,000 plants ha-1) for the BRS 511 sorghum cultivar, combined with sowing and harvest times. A split-plot experimental design, in complete randomized blocks, with four replications, was used. The analyzed variables were plant height, stem diameter, shoot fresh and dry matter, broth volume and total soluble solids (ºBrix). The results showed isolated effects of plant density on plant height and stem diameter, as well as effects of row spacing on total fresh mass and broth volume. The most efficient productive effect for the sweet sorghum was observed in populations lower than 120,000 plants ha-1 and row spacing inferior to 0.80 m, associated with harvest at 120 days after sowing.

SENSITIVITY OF CROP PLANTS TO WATER STRESS AT SPECIFIC DEVELOPMENTAL STAGES: REEVALUATION OF EXPERIMENTAL FINDINGS

1995 ◽  
Vol 43 (2) ◽  
pp. 99-111 ◽  
Author(s):  
Zvi Plaut
Keyword(s):  
Water Stress ◽  
Irrigation Water ◽  
Field Experiments ◽  
Developmental Stages ◽  
Growth Period ◽  
Soluble Solids ◽  
Growth Stages ◽  
Mild Stress ◽  
Uniform Reduction ◽  
Different Growth Stages

It has been suggested that in many crops differences in sensitivity to water stress occur at different growth stages. Since identical amounts of water may be applied, irrespective of whether a crop is exposed to relatively severe and short periods of stress or to extended periods of mild stress, the responses to such differing conditions should be compared. Unfortunately, such a comparison has not been conducted in most studies on sensitivity to water stress at different growth stages. In the present study, based on three field experiments conducted for different purposes, such a comparison was made for three crops: corn, sunflower, and tomato. In corn, distinct responses of ear and kernel yields to the timing of water stress were found. Withdrawal of irrigation water during flowering and cob formation resulted in greater yield losses than during other stages, indicating that this is a critical growth stage. However, slight and uniform reduction of water during the entire growth period resulted in significantly less damage to kernel or ear production, although the total amount of water applied was similar to that under staged withdrawal. In sunflowers, the withdrawal of irrigation water even at noncritical growth stages caused a more marked reduction in grain yield than did a uniform reduction throughout the entire season. In tomatoes, on the other hand, the withdrawal of irrigation water during specific growth stages caused minimal damage to fruit and total soluble solids yield as compared with fully irrigated control; reduction of irrigation water throughout the season brought about a significant decrease in yield. The difference between these crops is interpreted on the basis of the determinance of their floral meristems.

The Research of Vegetables and Fruits Storage by Air Discharge on Ship

2013 ◽  
Vol 726-731 ◽  
pp. 4534-4538
Author(s):  
Zhe Hua Du
Keyword(s):  
Fruits And Vegetables ◽  
New Technology ◽  
Soluble Solids ◽  
Experimental Result ◽  
Good Effect ◽  
Discharge Treatment ◽  
Titratable Acid ◽  
Preservation Technology ◽  
Vegetables And Fruits ◽  
Air Discharge

Fresh maintenance is the main problem existing in the storage of vegetables and fruits on ship. This paper introduced a new technology for vegetables and fruits storage: air discharge. According to the experimental result, air discharge treatment had good effect on the storage. It could reduce the wastage of total soluble solids and titratable acid during the storage. And, it could also reduce percentage of threshing. Air discharge treatment on grape storage appearance had obvious good effect. Air discharge preservation technology can effectively extend the storage time of fruits and vegetables. Improper air discharge can also cause damage to plasmalemma of fruits and vegetables. Various air discharge products concentration must be in safe range. This preservation technology needed to further research for applying on ship.

Water use efficiency in Sangiovese grapes (Vitis vinifera L.) subjected to water stress before veraison: different levels of assessment lead to different conclusions

2015 ◽  
Vol 42 (2) ◽  
pp. 198 ◽  
Author(s):  
Maria Clara Merli ◽  
Matteo Gatti ◽  
Marco Galbignani ◽  
Fabio Bernizzoni ◽  
Eugenio Magnanini ◽  
...  
Keyword(s):  
Water Stress ◽  
Vitis Vinifera ◽  
Water Use Efficiency ◽  
Water Use ◽  
Soluble Solids ◽  
Vitis Vinifera L ◽  
Single Leaf ◽  
Annual Biomass ◽  
Seasonal Basis ◽  
Use Efficiency

Several recent papers have shown that in grapevine (Vitis vinifera L.), interpretation of responses to drought can differ depending upon the parameter chosen to express water use efficiency (WUE). In the present paper, a series of WUE expressions, including physiological and agronomical, were compared in potted grapevines (Vitis vinifera L. cv. Sangiovese) that were either well-watered (WW) or subjected to progressive drought before veraison (WS) by supplying decreasing fractions (i.e. 70%, 50% and 30% of daily vine transpiration (Trd) determined gravimetrically before vines were fully rewatered. Although single-leaf intrinsic and instantaneous WUE increased with water stress severity, seasonal and whole-canopy WUE were similar to that before stress, at 70% Trd and upon rewatering, but dropped during severe water stress. WUE calculated as mass of DW stored in annual biomass (leaves, canes and bunches) per litre of water used did not differ on a seasonal basis, whereas WS plants showed lower must soluble solids at harvest, and unchanged colour and phenolic concentration in spite of smaller berries with higher relative skin growth. Results confirm that whole-canopy WUE is a much better index than any single-leaf based WUE parameter for extrapolation to agronomic WUE and actual grape composition. In our specific case study, it can be recommended that water supply to drought-stressed Sangiovese grapevines before veraison should not be lower than 70% of daily vine water use.

scholarly journals Magnitude of Genotype × Environment Interactions Affecting Tomato Fruit Quality

HortScience ◽  
2012 ◽  
Vol 47 (6) ◽  
pp. 721-726 ◽  
Author(s):  
Dilip R. Panthee ◽  
Chunxue Cao ◽  
Spencer J. Debenport ◽  
Gustavo R. Rodríguez ◽  
Joanne A. Labate ◽  
...  
Keyword(s):  
New York ◽  
Vitamin C ◽  
Fruit Quality ◽  
Tomato Fruit ◽  
Heritability Estimate ◽  
Field Trials ◽  
Soluble Solids ◽  
Quality Traits ◽  
Titratable Acid ◽  
Tomato Genotypes

There is a growing interest by consumers to purchase fresh tomatoes with improved quality traits including lycopene, total soluble solids (TSS), vitamin C, and total titratable acid (TTA) content. As a result, there are considerable efforts by tomato breeders to improve tomato for these traits. However, suitable varieties developed for one location may not perform the same in different locations. This causes a problem for plant breeders because it is too labor-intensive to develop varieties for each specific location. The objective of this study was to determine the extent of genotype × environment (G×E) interaction that influences tomato fruit quality. To achieve this objective, we grew a set of 42 diverse tomato genotypes with different fruit shapes in replicated trials in three locations: North Carolina, New York, and Ohio. Fruits were harvested at the red ripe stage and analyzed for lycopene, TSS, vitamin C, and TTA. Analysis of variance (ANOVA) revealed that there were significant differences (P < 0.05) among tomato genotypes, locations, and their interaction. Further analysis of quality traits from individual locations revealed that there was as much as 211% change in performance of some genotypes in a certain location compared with the average performance of a genotype. Lycopene was found to be most influenced by the environment, whereas TTA was the least influenced. This was in agreement with heritability estimates observed in the study for these quality traits, because heritability estimate for lycopene was 16%, whereas that for TTA was 87%. The extent of G×E interaction found for the fruit quality traits in the tomato varieties included in this study may be useful in identifying optimal locations for future field trials by tomato breeders aiming to improve tomato fruit quality.

scholarly journals Proximate composition, physicochemical characteristics and sensory evaluation of reduced-calorie belimbi fruit (Averrhoa belimbi) jam with maltitol

Food Research ◽  
2020 ◽  
Vol 4 (5) ◽  
pp. 1545-1553
Author(s):  
L.-H. Ho ◽  
S.R.R. Irisha Yasmira ◽  
Norlia M.
Keyword(s):  
Sensory Evaluation ◽  
Proximate Composition ◽  
Biochemical Analysis ◽  
Ph Value ◽  
Profile Analysis ◽  
Physicochemical Characteristics ◽  
Soluble Solids ◽  
Texture Profile ◽  
Overall Acceptability ◽  
Titratable Acid

Consuming of foods high in calories is often associated with higher risks for obesity. This has increased the consumer demand for the food products that promise health benefits. The aim of this study was to evaluate the proximate composition, physicochemical properties, and sensory attributes of reduced-calorie belimbi fruit jam with maltitol. Two formulations of belimbi fruit jams were prepared using sucrose as a reference food (i.e. BJSUC) or maltitol (i.e. BJMAL). The proximate composition, biochemical analysis, texture profile analysis, and sensory evaluation of the produced fruit jams were conducted. The obtained results of BJSUC and BJMAL were compared using unpaired Student’s ttest. The moisture content of BJMAL (76.58%) was significantly (P<0.05) higher than the BJSUC (66.41%). There was a reduction in carbohydrate and caloric values for belimbi fruit jam prepared using maltitol (22.19% and 96.43 kcal, respectively) as compared with belimbi fruit jam prepared using sucrose (32.91% and 136.09 kcal, respectively). However, belimbi fruit jam prepared without sucrose (i.e. BJMAL) did not affect to the ash (0.27%), crude protein (0.39%), crude fat (0.55%), and crude fiber (1.95%) contents, as well as for pH value (3.05), water activity (0.80), and vitamin C (22.90 mg/100 g) contents. BJMAL showed a significant (P<0.05) lower total soluble solids (66°Brix) and total titratable acid (0.09%) than BJSUC. BJMAL had lower firmness value and easy to spread than the BJSUC. The overall acceptability of BJMAL by panellists was comparable to the BJSUC, both fruit jams received scores higher than 5. The reducedcalorie belimbi fruit jam can be prepared by using maltitol.

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